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KRB-5404

Tilt and remove the stationary contact as shown in Fig. 80. (The insulation sheet will be removed at the same time.) If the

current sensor and power supply CT hinder the removal of the stationary contact, make a record of the ties for control wires

between the current sensor and power supply CT (position/number of ties and type of control wires) using a digital camera, then

cut the ties and remove the stationary contact. Restore the ties after replacing the stationary contact.

Ties: TYTON Insulok T18RHS (heat resistance grade: HS, 100 mm long x 2.5 mm wide) or equivalent (2 or 3 pcs per pole)

Fig. 80 Removing the stationary contact

5) Reinstall each part or component in reverse order of removal after inspection. Make sure the insulation sheet is installed. Be sure

to restore the ties if they have been cut during removal of the stationary contact.

6) After installing the moving and/or stationary contact, be sure to perform 10 - 20 cycles of open/close operation and then

retighten the contact mounting screws to the specified torque.



Fig. 81 shows the contacts in closed and open state.

Open state

Closed state

Fig. 81 State of contacts

Opening distance

measuring points

Current sensor

Control wire

N-phase unit is marked
with "N" in this area.

Stationary contact
Stationary arcing contact

Stationary contact

(tilted)

Insulation sheet

Power supply CT

Stationary contact

(removed)

Содержание TemPower 2

Страница 1: ...se http www terasaki se TERASAKI CIRCUIT BREAKERS S PTD LTD 17 Tuas Street Singapore 638454 Telephone 65 6744 9752 Fax 65 6748 7592 Email tecs pacific net sg TERASAKI ELECTRIC CO LTD Head Office Circuit Breaker Division 6 13 47 Kamihigashi Hirano ku Osaka 547 0002 Japan Telephone 81 6 6791 2763 Fax 81 6 6791 2732 Email int sales terasaki co jp http www terasaki co jp TERASAKI ELECTRIC M SDN BHD Lo...

Страница 2: ... AR212H AR216H AR220H AR316H AR320H AR325H AR332H AR420H AR440H AR208D AR212D AR216D Notice Be sure to read this manual before installing operating servicing or inspecting the ACB Please retain this manual for future reference Electrical work must be done by competent persons ACB maintenance inspection parts replacement OCR field tests and setting changes must be performed by competent persons ...

Страница 3: ......

Страница 4: ...eneral feeder 47 5 2 3 S characteristic for generator protection 51 5 3 OCR Setting Procedure 53 5 3 1 OCR Setting Procedure AGR 11B type 53 5 3 2 OCR Setting Procedure AGR 21B 22B 31B type 54 5 3 2 1 General 54 5 3 2 2 Available screens 55 5 3 2 3 Monitor screen 57 5 3 2 3 1 Monitor screen AGR 21B 22B 57 5 3 2 3 2 Monitor 1 screen AGR 31B 58 5 3 2 3 3 Monitor 2 screen AGR 31B 59 5 3 2 4 Setup scr...

Страница 5: ...KRB 5404 4 ...

Страница 6: ...s concrete powder dust chippings and iron powder and oil or rainwater from entering the ACB These materials inside the ACB could cause a fire or malfunction Prior to commencing any work on the ACB open an upstream circuit breaker or the like to isolate all sources of power voltage Otherwise electric shock may result Fix the draw out cradle of the ACB firmly on a flat level surface using mounting s...

Страница 7: ...ure to do so may cause a fire or burnout Before changing OCR settings open the ACB and then lock the OFF button to prevent the ACB from being closed inadvertently Do not push the SET button diagonally Doing so may cause a poor in return and malfunction Maintenance and Inspection Precautions CAUTION ACB maintenance inspection and parts replacement must be performed by competent persons Do not touch...

Страница 8: ...through the lifting holes Take care that the position switches control circuit terminals auxiliary switches arc gas barrier and control terminal block cover which are shown in Fig 1 are not damaged by the lifting rope Lift the ACB carefully and gently For transportation place the ACB on a pallet and carry slowly and carefully Avoid shock and vibration to the ACB during transportation Do not lay th...

Страница 9: ...uit terminals the control terminal block cover and the control circuit contacts Front view Rear view Fig 3 Transporting the draw out cradle 2 2 Storage Precautions It is recommended that the ACB be used as soon as you have received it If it is necessary to store the ACB note the following Store the ACB in a dry indoor location to prevent condensation due to sudden changes in ambient temperature Co...

Страница 10: ...adle with mounting screws Deformation of the protrusions may cause a malfunction see Fig 4 Connect conductors including screws to the main circuit terminals in the specified area Otherwise a short circuit may result When terminating conductors to the ACB tighten terminal screws to the torque specified in this manual Otherwise a fire could result For 4 pole ACBs be sure to connect a 3 phase 4 wire ...

Страница 11: ...rminals Main circuit terminal screws Hex head M10 with flat washers 2 spring washer 1 and nut 1 per screw Tightening torque 22 5 37 2 N m Table 1 Number of main circuit terminal screws required ACB type AR208S AR212S AR216S AR208D AR212D AR216D AR220S AR212H AR216H AR220H AR325S AR332S AR316H AR320H AR325H AR332H AR440SB AR440S AR420H AR440H Number of main circuit terminal screws 3 4 pole Vertical...

Страница 12: ...Back view Horizontal terminals 3 Poles Horizontal terminals 4 Poles Right side view Back view Right side view Back view Front terminals 3 Poles Front terminals 4 Poles Right side view Back view Right side view Back view Fig 6 Conductor include screw connection area AR208S AR212S AR216S AR220S AR212H AR220H AR208D AR212D AR216D Insulation distance of conductor connection area and earth metal is mor...

Страница 13: ...rizontal terminals 4 Poles Right side view Back view Right side view Back view Front terminals 3 Poles Front terminals 4 Poles Right side view Back view Right side view Back view Fig 7 Conductor include screw connection area AR325S AR332S AR316H AR320H AR325H AR332H Insulation distance of conductor connection area and earth metal is more than 12 5mm ...

Страница 14: ...als 3 Poles Right side view Back view Vertical terminals 4 Poles Right side view Back view Fig 8 Conductor include screw connection area AR440S Insulation distance of conductor connection area and earth metal is more than 12 5mm ...

Страница 15: ...Use a support to hold conductors securely at distance L as shown in Fig 10 and Table 2 Such a support will help preventing the conductors and main circuit terminals from being deformed or damaged due to a large electromagnetic force caused by any fault current Use a high quality insulating material for a support and secure enough insulation distance Table 2 Distance L Short circuit current kA 30 5...

Страница 16: ...terminal connection If any work is done near the ACB that have been installed protect the openings of the ACB with appropriate covers to prevent spatters metal chips wire cuttings or other foreign objects from entering the ACB Terminal block fixing screws Hex head M6 10 4 red with spring washer and flat washer Tightening torque 4 7 5 9 N m Auxiliary switches Cover fixing screw Auxiliary switch ter...

Страница 17: ...l terminals Vertical terminals Control circuit terminal type screw terminals Spring charging method Manual or motor charging Overcurrent release OCR No OCR or L characteristic for general feeder protection In case of AGR 11B No OCR L characteristic for general feeder protection R characteristic for general feeder protection or S characteristic for generator protection In case of AGR 21B 22B 31B Op...

Страница 18: ...protection In case of AGR 21B 22B 31B Operation indication Group indication In case of AGR 11B Individual indication In case of AGR 21B 22B 31B Tripping device Tripping coil TC Standard equipment for OCR equipped ACB Shunt trip device SHT Optional undervoltage trip device UVT Optional Auxiliary switches Number of switches 4C standard 7C or 10C available for general feeder or microload Terminal typ...

Страница 19: ...peration indication Group indication In case of AGR 11B Individual indication In case of AGR 21B 22B 31B Tripping device Tripping coil TC Standard equipment for OCR equipped ACB Shunt trip device SHT Optional Undervoltage trip device UVT Optional Auxiliary switches Number of switches 4C standard 7C or 10C available for general feeder or microload Terminal type screw terminals Operation power 15 Ra...

Страница 20: ...332S AR440SB AR440S Standard Conductor size Ambient temperature C 2 50 5t 2 80 5t 2 100 5t 3 100 5t 2 100 10t 3 100 10t 4 150 10t 4 150 6t IEC60947 2 EN60947 2 AS3947 2 JIS C8201 2 1 Ann 1 Ann 2 40 standard ambient temperature 800 1250 1600 2000 2500 3200 4000 4000 45 800 1250 1600 2000 2500 3200 4000 4000 50 800 1250 1600 2000 2500 3200 3940 4000 55 800 1200 1540 1820 2500 2990 3820 3940 60 800 1...

Страница 21: ...trusion 50 Specification nameplate 22 Overcurrent release OCR 18 OCR cover 17 Front cover 19 ON OFF cycle counter 16 20 Rating nameplate 9 Position indicator 51 Draw out handle Position padlock lever 13 Release button 12 Draw out handle insertion hole 11 39 Control terminal block cover 49 Lifting hole ø20mm 40 Cover fixing screw 41 Auxiliary switches 42 Terminal block 34 Body stopper 33 Hook pin 3...

Страница 22: ...supplied power via the power CT installed in the ACB main circuit When the current sensor detects an overcurrent in the main circuit the OCR instructs the magnet hold trigger MHT to trip open the ACB 19 Front cover A plastic cover of the breaker body front panel 20 Rating nameplate Indicates the type applicable standards and rated breaking capacity of the ACB 22 Specification nameplate Indicates t...

Страница 23: ...uit terminals 37 and auxiliary switches 38 44 Ground terminal M8 tapped hole Allows connection of a ground terminal 45 Gas exhaust port Allows the arc gas to be discharged from arc chamber 25 in a horizontal direction when the ACB trips open 46 Arc gas barrier Prevents the arc gas from being discharged upwards from arc chamber 25 when the ACB trips open 47 Breaker draw out arm Is retracted in the ...

Страница 24: ...KRB 5404 23 White paper ...

Страница 25: ... switch terminals 05 15 Group indication Operation indication contact output terminals 05 17 Trip indication 05 27 Spring charged indication 10 20 AC100V AC110V AC120V AC200V AC220V AC240V DC24V DC48V DC100V DC110V DC125V DC200V or DC220V To be stated when ordering Shunt trip device power input terminals 08 09 18 28 AC100V AC200V or AC400V unit To be stated when ordering Connect the unit to the ap...

Страница 26: ...rcuit terminals 02 22 and 03 07 are used for charging and closing operation respectively 9 Do not use these terminals for other circuits when both instantaneously rated shunt trip and UVT are fitted These terminals are used by Terasaki as the anti burnout SW for the instantaneously rated shunt trip 10 Permissible voltage range of latch release coil and shunt trip device are the operation of the st...

Страница 27: ...100V compatible 5 AC200V compatible 5 AC400V compatible 5 08 09 AC100V AC200V AC380V 09 18 AC110V AC220V AC415V 09 28 AC120V AC240V AC440V OFF switch 24 30 Available for ACBs equipped with undervoltage trip device Continuous rated shunt trip device power and OFF switch 10 20 AC100V AC110V AC120V AC200V AC220V AC240V DC24V DC48V DC100V DC110V DC125V DC200V or DC220V 5 Operation indication 05 15 Lon...

Страница 28: ... ratio CT rated primary current ICT A 150 mV 7 Provide power to the overcurrent trip device when control power is lost 8 When you close in LRC after cut the signal of SHT please open the interval more than 200ms 9 For motor split circuit terminals 02 22 and 03 07 are used for charging and closing operation respectively 10 Do not use these terminals for other circuits when both instantaneously rate...

Страница 29: ...nd 34 2 Zone interlock capabilities for shot time delay trip and for ground fault can be combined 3 The zone interlock system allows selective discrimination that when a fault current higher than the short time delay trip or ground fault trip pickup current is detected at a point in the power distribution system operates the upstream ACB nearest to the point to shut off power within 50 ms even if ...

Страница 30: ...2 4 0 5 0 12 1710 2090 Ambient temperature 20 C Table 12 Ratings of shunt trip device SHT Rated voltage V Permissible voltage range V Peak exciting current max A Coil resistance ohm Max contact parting time ms AC100 70 110 0 29 300 380 40 AC110 77 121 0 25 350 440 AC120 84 132 0 22 440 540 AC200 140 220 0 14 1210 1490 AC220 154 242 0 13 1410 1740 AC240 168 264 0 11 1710 2090 DC24 16 8 26 4 1 04 20...

Страница 31: ... R 0 01 5 AC cosø 0 6 DC L R 0 007 Table 15 Ratings of operation indication contacts Voltage V Rated contact current A Individual indication Long time delay trip short time delay trip instantaneous trip pretrip alarm ground fault trip system alarm Spring charging tripping operation Resistive load A Inductive load A 1 Resistive load A Inductive load A 1 AC250 0 5 0 2 3 3 DC30 2 0 7 3 2 DC125 0 5 0 ...

Страница 32: ...he breaker fixing bolts make sure the bolts on both sides are securely tightened before using the ACB Loosened fixing bolts may cause a malfunction of the ACB in particular when it is installed in such an area that is subject to strong vibrations The ACBs are available in two types in terms of the closing spring charging method and the remote operation capability a manual charging type and a motor...

Страница 33: ...r Fig 23 10 shows ON and the charge indicator Fig 23 1 shows DISCHARGED Electrical closing Press the ON switch shown in Fig 17 19 The latch release coil LRC Fig 17 19 will be excited and the ACB is closed with a sound The ON OFF indicator Fig 23 10 shows ON the charge indicator Fig 23 1 shows DISCHARGED and the charging motor starts charging the closing springs 4 1 3 Opening operation Manual openi...

Страница 34: ...erclockwise so that charging lever 7 disengages from closing spring 6 and rotates counterclockwise Closing cam 8 is pushed up by charging lever 7 and rotates clockwise At this time each component is positioned as shown in Fig 26 Continued to Fig 25 Fig 24 Closing motion 1 discharge motion Closing cam 8 rotating clockwise causes closing link and top link 9 to be pushed straight This rotates closing...

Страница 35: ...or tripping operation by the overcurrent release OCR moving core 1 protrudes downward from the magnet hold trigger MHT and trip linkage 2 rotates counterclockwise Parts marked with an asterisk are trip pins To avoid superposition in the figure magnet hold trigger related parts are drawn in positions that are different from actual positions This rotates trip trigger shaft 3 counterclockwise and tri...

Страница 36: ...on 3 ISOLATED position Insert Draw out In this position the main circuit is isolated and the In this position both the main and control circuits control circuits are connected The ACB can be are isolated and the ACB is completely de energized tested with the switchboard panel door closed The switchboard panel door can be closed Fig 28 Positions of breaker body in draw out cradle Operation Durabili...

Страница 37: ...ut handle Fig 29 1 cannot be inserted 2 Loosen the breaker fixing bolts Fig 29 2 if used to unlock the breaker body Fig 29 3 3 Unlock the position lock lever Fig 29 14 if locked See section 4 5 4 Insert the draw out handle into the draw out handle insertion hole Fig 29 4 And slowly turn counterclockwise until the handle cannot be turned The position indicator Fig 29 5 shows TEST When the main circ...

Страница 38: ...he draw out rail pulled out 5 Use an optional lifter or lifting plate to transfer the breaker body Fig 29 3 to a safe place Refer to section 2 1 2 4 2 3 Putting the breaker body back into the draw out cradle DANGER Never touch live terminal parts Otherwise electric shock may result Do not leave the ACB body in the removed position The weight of the ACB may cause serious injury CAUTION Make sure th...

Страница 39: ...d slowly turn clockwise until the handle cannot be turned The position indicator Fig 29 5 shows TEST When you turn the draw out handle clockwise you can insert the body smoothly by using a hand for holding ACB body until it moves The ACB cannot be closed as long as the draw out handle is in the draw out handle insertion hole To close the ACB e g for ON OFF testing remove the draw out handle 4 2 3 ...

Страница 40: ...F ON ISOLATED ON OFF OFF ON Removed ON OFF OFF ON Table 19 Contact statues of position switches Position indication Switch ISOLATED TEST CONN Status of a contact Status of b contact CONN position indication ON OFF OFF ON TEST position indication ON OFF OFF ON ISOLATED position indication ON OFF OFF ON Inserted position indication ON OFF OFF ON Inserted means that the breaker body is in the CONN TE...

Страница 41: ...s the ON button Fig 33 Locking the OFF button 4 5 Position Lock Lever Locking Procedure 1 Move the breaker body to the desired position CONN TEST or ISOLATED 2 Pull out the position lock lever shown in Fig 34 3 Lock the position padlock lever using a padlock with ø6 shackle up to 3 padlocks can be used as shown in Fig 34 This prevents the draw out handle from being inserted into the draw out handl...

Страница 42: ...n the breaker fixing bolt using the draw out handle This procedure is required for both the sides of the ACB Fig 35 Securing the breaker fixing bolts 4 7 OCR Cover Locking Procedure Lock the OCR cover using a padlock with ø6 shackle as shown in Fig 36 The OCR cover cannot be opened which prevents OCR settings from being changed Fig 36 Padlocking the OCR cover OCR cover OCR cover padlock hole Padlo...

Страница 43: ...sensing allows the ACB to operate normally The OCR is available in the type that follows AGR 11BL 21BL 31BL L characteristic for general feeder for works and transformer protection AGR 21BR 31BR R characteristic for general feeder 3 characteristics conforming to IEC60255 AGR 21BS 22BS 31BS S characteristic for generator protection 5 1 Specifications Specifications of the OCR are shown in Table 20 ...

Страница 44: ...everse phase preventing damage to loads 8 The line side ground fault protection capability allows the ACB to trip open when transformer windings or cables on the line side suffers a ground fault in TN C or TN S power distribution systems where the line side neutral is grounded 9 Control power supply is required Disabled when control power is lost 10 Protects the breaker main contact against overhe...

Страница 45: ...ay trip timing tsd Relaying time ms 50 100 200 400 600 800 Resettable time ms 25 75 175 375 575 775 Max total clearing time ms 120 170 270 470 670 870 8 Short time delay trip I2 t mode I2 t tsd ON OFF 9 Instantaneous trip pickup current Ii In 2 4 6 8 10 12 14 16 NON A Tolerance 20 11 Ground fault trip pickup current 2 Ig ICT 0 1 0 2 0 3 0 4 0 6 0 8 1 0 NON A Tolerance 20 12 Ground fault trip timin...

Страница 46: ...n trip pickup current setting i Overcurrent value tR Time setting 4 NON setting disables protective functions If the short time delay trip function and the instantaneous trip or MCR function are both attempted to be set to NON however the fail safe operates so that When the short time delay trip function has been set to NON the instantaneous trip function cannot be set to NON or MCR When the insta...

Страница 47: ...ay trip Short time delay trip Instantaneous trip N phase protection trip and Pre trip alarm Negative phase sequence protection Ground fault trip Fig 40 Characteristic curves of type AGR 11BL 21BL 31BL OCR with L characteristic ...

Страница 48: ...e AL OFF 12 1 Underlined values are default settings 2 A change in rated current setting results in changes in long time delay trip short time delay trip instantaneous strip pretrip alarm and negative phase sequence protection trip pickup current settings accordingly 3 The operating time t at a long time delay or N phase protection trip pickup current setting is given by t 0 0222 tR i IR 0 02 1 20...

Страница 49: ...ction Fig 42 Characteristic curves of type AGR 21BR 31BR OCR with R characteristic of I0 02 t protection type Long time delay trip short time delay trip instantaneous trip and pretrip alarm N phase protection Fig 43 Characteristic curves of type AGR 21BR 31BR OCR with R characteristic of It protection type ...

Страница 50: ...ction Fig 44 Characteristic curves of type AGR 21BR 31BR OCR with R characteristic of I2 t protection type Long time delay trip short time delay trip instantaneous trip and pretrip alarm N phase protection Fig 45 Characteristic curves of type AGR 21BR 31BR OCR with R characteristic of I3 t protection type ...

Страница 51: ...ip alarm N phase protection Fig 46 Characteristic curves of type AGR 21BR 31BR OCR with R characteristic of I4 t protection type Negative phase sequence protection Ground fault trip Fig 47 Characteristic curves of type AGR 21BR 31BR OCR with R characteristic of common protection type ...

Страница 52: ...y trip or pretrip alarm pickup current setting i Overcurrent value tR Time setting 4 NON setting disables protective functions If the short time delay trip function and the instantaneous trip or MCR function are both attempted to be set to NON however the fail safe operates so that When the short time delay trip function has been set to NON the instantaneous trip function cannot be set to NON or M...

Страница 53: ...KRB 5404 52 Long time delay trip short time delay trip instantaneous trip and pretrip alarm Reverse power trip Fig 49 Characteristic settings of type AGR 21BS 22BS 31BS OCR with S characteristic ...

Страница 54: ...t the hollow on the front cover to unlatch and open the OCR cover See Fig 50 If the OCR cover is padlocked first remove the padlock Fig 50 OCR cover 3 Use rotary step switches and slide switches to set the OCR See Fig 51 Rotary step switches must be adjusted with a small flatblade screwdriver Turn switch knobs stepwise and do not stop the knobs halfway between calibration markings A bold line on a...

Страница 55: ...uired to display measurements 3 The MENU SET cross and ENT buttons are used to navigate the LCD screen Fig 53 provides the general view of the OCR Button symbols and their meanings Press the SET button using a pointed tool such as the tip of a pen Press the MENU button Press the up key of the cross button Press the down key of the cross button Press the right key of the cross button Press the left...

Страница 56: ...een allows clearing the measured max current and the trip alarm event log and resetting trip alarm operation indication Setting 1 screen SET1 See 5 3 2 6 This screen allows viewing settings relating to long time delay short time delay instantaneous and ground fault trip capabilities and changing these settings Setting 2 screen SET2 See 5 3 2 7 This screen allows viewing settings relating to other ...

Страница 57: ... specifications and changing settings Reset screen RESET See 5 3 2 5 2 This screen allows clearing the measured max current and the trip alarm event log and resetting trip alarm operation indication Setting 1 screen SET1 See 5 3 2 6 This screen allows viewing settings relating to long time delay short time delay instantaneous and ground fault trip capabilities and changing these settings Setting 2...

Страница 58: ...2B OCR 1 5 of CT rated primary current ICT Reading will be 0 when 1 5 of CT rated primary current ICT 2 First phase R A phase current present value 3 Second phase S B phase current present value 4 Third phase T C phase current present value 5 Neutral N phase current present value Displayed when THE ACB is of 4 pole type 6 Ground fault current present value Displayed only when THE ACB is equipped w...

Страница 59: ...ubscreen item 1 Description Tolerance 1 Max phase current present value Initial display 1 5 of CT rated primary current ICT Reading will be 0 when 1 5 of CT rated primary current ICT 2 Ground fault current present value Displayed only when THE ACB is equipped with the ground fault trip function 3 Max phase current 4 Power present value 5 Monitor 2 screen See 5 3 2 3 3 1 If no value is found for an...

Страница 60: ...10 11 9 12 13 14 12 15 from the next page 15 to the next page 5 3 2 3 3 Monitor 2 screen AGR 31B Fig 58 shows how to navigate the monitor 2 screen and Table 28 lists the items that can be viewed on this screen Fig 58 1 Monitor 2 screen navigation ...

Страница 61: ...function 8 Max phase current 9 Line voltage between first and second phases R and S phases A and B phases Displayed when the ACB is of single phase 3 wire or 3 phase 3 4 wire type capable of line voltage indication 10 Line voltage between second and third phases S and T phases B and C phases 11 Line voltage between thrid and first phases T and R phases C and A phases 9 Phase voltage between first ...

Страница 62: ...creen AGR 21B 22B Fig 59 shows how to navigate the setup screen and Table 29 lists the items that can be viewed on this screen Fig 59 1 Setup screen navigation 1 21 2 3 4 5 6 7 14 7 8 2 9 10 9 2 11 12 13 11 17 19 from the next page 17 to the next page ...

Страница 63: ... mode Start Press ENTER to enter this subscreen from a setup subscreen The value that can be changed will flash To exit this subscreen press the right or left key of the cross button 19 Setting change mode Setting change Press the up or down key of the cross button to change the setting To exit this subscreen with no change in setting press the right or left key of the cross button 20 Setting chan...

Страница 64: ...B Fig 60 shows how to navigate the setup screen and Table 30 lists the items that can be viewed on this screen Fig 60 1 Setup screen navigation 1 26 2 2 3 4 5 6 7 17 7 8 2 9 10 11 12 9 2 13 14 15 13 16 24 from the next page 16 to the next page ...

Страница 65: ...ode Other settings can be changed in the same way on the respective subscreens Flashing Fig 60 2 Setup screen navigation 13 to the previous page 13 15 from the previous page 16 17 18 19 20 21 2 21 22 17 Cancel Save change 23 24 25 ...

Страница 66: ...nt Enabled 97 98 99 100 101 102 103 6 7 22 Power adjustment Enabled 97 98 99 100 101 102 103 6 7 23 Setting change mode Start Press ENTER to enter this subscreen from a setup subscreen The value that can be changed will flash To exit this subscreen press the right or left key of the cross button 24 Setting change mode Setting change Press the up or down key of the cross button to change the settin...

Страница 67: ...value and operating time 4 Max phase current Allows clearing the max phase current see Fig 56 8 5 Clear mode Start Press ENTER to enter this subscreen from a reset subscreen NO will flash To exit this subscreen press the right or left key of the cross button 6 Clear mode YES Press the up or down key of the cross button YES will appear To exit this subscreen without clearing the item press the righ...

Страница 68: ...d power Allows clearing the max demanded power see Fig 51 17 5 Max phase current Allows clearing the max phase current see Fig 51 9 6 Integrated demand Allows clearing the integrated demand 7 Clear mode Start Press ENTER to enter this subscreen from a reset subscreen NO will flash To exit this subscreen press the right or left key of the cross button 8 Clear mode YES Press the up or down key of th...

Страница 69: ...33 lists the items that can be viewed or changed on this screen Setting change mode Other settings can be changed in the same way on the respective subscreens Flashing Fig 63 Setting 1 screen navigation 1 16 2 2 11 3 4 5 6 7 3 8 9 10 8 11 12 11 2 Cancel Save change 13 14 15 3 AGR 21B 22B 4 AGR 31B ...

Страница 70: ...0 8 sec S characteristic 0 1 0 2 0 3 0 4 0 6 0 8 sec 10 Short time delay trip I2 t protection type OFF ON 11 Instantaneous trip pickup current In x 2 4 6 8 10 12 14 16 NON A 12 Instantaneous trip INST MCR INST MCR 13 Setting change mode Start Press ENTER to enter this subscreen from a setting 1 subscreen The value that can be changed will flash To exit this subscreen press the right or left key of...

Страница 71: ...e Setting 2 screen and Table 34 lists the items that can be viewed or changed on this screen Fig 64 1 Setting 2 screen navigation 1 31 2 3 4 5 2 26 to the next page 6 7 8 9 6 10 11 12 13 10 14 15 16 14 17 19 from the next page 17 to the next page 4 AGR 21B 22B 5 AGR 31B ...

Страница 72: ...e 17 18 19 17 20 21 22 20 23 24 25 23 26 27 26 2 5 from the previous page 2 to the previous page Cancel Save change 28 29 30 Setting change mode Other settings can be changed in the same way on the respective subscreens Flashing Fig 64 2 Setting 2 screen navigation ...

Страница 73: ...s button 29 Setting change mode Setting change Press the up or down key of the cross button to change the setting To exit this subscreen with no change in setting press the right or left key of the cross button 30 Setting change mode Save change Press ENTER to enter this subscreen from subscreen 29 SURE will flash To save the change press SET The subscreen will exit to the Setting 2 screen To exit...

Страница 74: ...reen See 5 3 2 3 2 Maintenance screen 3 Trip event log fault current value Trip cause and fault current value 4 Trip event log operating time Trip cause and operating time 5 Alarm event log fault current value Alarm cause and fault current value 6 Alarm event log operating time Alarm cause and operating time 7 Monitor screen See 5 3 2 3 1 If no value is found for an item the corresponding subscree...

Страница 75: ...characteristic IR 6 Non R characteristic IR 3 Non S characteristic IR 1 2 Non Short time delay trip Isd 1 2 Ii Isd 1 5 Short time delay trip I2 t protection OFF Instantaneous trip Ii 1 2 Mode INST MCR Mode MCR Ground fault trip Ig 1 5 Ground fault trip I2 t protection OFF 1 Setting an item to NON and OFF disables the test for the item 3 To check the ACB along with the OCR close the ACB before appl...

Страница 76: ... trip cause and fault current value are indicated 11 Trip event log operating time The trip cause and operating time are indicated 1 If no log is found the corresponding subscreen is skipped 2 When the long time delay trip function is selected the short time delay trip and instantaneous trip functions are locked inoperative and cannot be used The pretrip alarm function can be used 3 Even when the ...

Страница 77: ...g 68 LEDs Table 38 Operation indication Type of OCR Control power supply Operation LED Contact output Position State Terminal No See Fig 17 State Normal pickup Trip Alarm Normal Trip Alarm AGR 11BL AL AGR 11BL GL Not required Long time delay trip LT N phase protection NP 1 OFF Flash OFF 05 15 OFF Turn OFF automatically after ON for 40 ms or more 1 Short time delay trip ST Ground fault trip GF Inst...

Страница 78: ...put Control power supply State Terminal No See Fig 19 State Normal operation When picked up When activated Use the right or left key of the cross button for screen navigation After control power is off for at least 1 sec Normal operation When activated After control power is off for at least 1 sec Long time delay trip LT N phase protection NP Normal indication Normal indication 1 05 15 OFF ON 2 OF...

Страница 79: ...ndication 1 2 05 27 ON 2 OFF System alarm Normal indication 1 05 26 ON 3 OFF 4 The ACB can be opened closed or tripped irrespective of whether or not the operation indication is reset The operation indication is updated when a protective function is activated means flashing 1 The event log is not cleared 2 The alarm is self recovered when the fault current decreases to less than the setting 3 SYS1...

Страница 80: ...ar Every half year after 2 years since installation Open close condition 800AF or less 1000AF 2500AF 3200AF or more Nearly no current level Every 1000 cycles Every 500 cycles after 1000 cycles Rated current level Every 1000 cycles Every 500 cycles after 1000 cycles Every 500 cycles Every 250 cycles after 500 cycles Every 100 cycles Every 50 cycles after 100 cycles Thorough Every 2 or 3 years Every...

Страница 81: ...ng an auxiliary do not damage the control wire for the auxiliary or pinch the wire between the auxiliary and the breaker body Doing so may cause a malfunction To ensure safety be sure to perform the preparation work described in section 6 2 1 unless otherwise specified in the inspection procedures The normal inspection procedure and the detailed inspection procedure are shown in Tables 42 and 43 r...

Страница 82: ...sandpaper 2 If contact tip suffers damage or is less than 0 7 mm thick after polishing replace both moving and stationary contacts Blackening of contact tips is caused by oxidation or sulfuration and will be removed during closing operation It has no harmful effect except in extreme causes If heat discoloration is found perform detailed inspection 10 Looseness of screws Check moving and stationary...

Страница 83: ...ect hand connector black that is closer to coil than the other and using tester measure coil resistance between terminals and make sure it is within range specified in Table 12 If not so replace SHT 15 Length and stroke of plunger Remove SHT and using vernier caliper make sure plunger length is 24 2 24 8 mm in natural state and protrusion of plunger is 6 3 7 mm when moving core is pushed in If not...

Страница 84: ...ng so may cause a malfunction 6 2 1 Preparation Be sure to make the following preparations for parts replacement in order to ensure safety 1 Open an upstream circuit breaker or the like to isolate all sources of power voltage from the main and control circuits 2 Draw out the breaker body to the removed position and remove it using an optional lifter or lifting plate Refer to sections 4 2 2 and 2 1...

Страница 85: ... block 4 Turn the UVT mounting screws eight or ten turns to loosen disconnect the manual connector red and then remove the UVT as shown in Fig 72 Fig 72 Removing the UVT Contact block Contact block fixing screw Pan head M5 10 2 with spring and flat washers Tightening torque 2 7 3 5 N m Front cover Contact block UVT mounting screw Pan head M4 60 2 with spring washer Tightening torque 1 3 1 7 N m Ha...

Страница 86: ...everse order of removal after inspection When installing the UVT make sure the nameplate on the UVT can be viewed from the front of the ACB Fig 74 provides the general view of the UVT Fig 74 General view of UVT Contact block Front cover Plunger Terminal No 1 Terminal No 2 Terminal No 3 Hand connector red 3 Terminals Attraction coil resistance to be measured between terminals 1 and 2 Holding coil r...

Страница 87: ...breaker body on spacers 3 Turn the arc chamber mounting screw eight or ten turns to loosen as shown in Fig 76 The arc chamber mounting screws are of captive type and cannot be removed from the arc chamber Arc chambers at the top Arc chambers at the bottom Fig 76 Arc chamber mounting screws 4 Holding the arc chamber mounting screw remove the arc chamber 5 Reinstall each part or component in reverse...

Страница 88: ...ct Insulated operating rod Moving contact mounting screw Hex socket head M8 30 6 16 M8 25 for AR208S only with spring washer Tightening torque 14 7 N m Stationary contact mounting screw A Pan head M6 30 12 32 with spring and flat washers Tightening torque 4 7 5 9 N m Stationary contact mounting screw B Pan head M6 20 12 32 with spring and flat washers Tightening torque 4 7 5 9 N m Main circuit con...

Страница 89: ...pcs per pole Fig 80 Removing the stationary contact 5 Reinstall each part or component in reverse order of removal after inspection Make sure the insulation sheet is installed Be sure to restore the ties if they have been cut during removal of the stationary contact 6 After installing the moving and or stationary contact be sure to perform 10 20 cycles of open close operation and then retighten th...

Страница 90: ...aries depending on the poles the moving contact the lower separator and the moving contact mounting screws by hand turn the moving contact mounting screws additional two or three turns to remove these parts Fig 83 shows the moving contact related parts Fig 83 Moving contact related parts Moving contact mounting screw Hex socket head M8 30 6 16 M8 25 for AR208S only with spring washer Tightening to...

Страница 91: ...cer moving contact upper separator lower separator spring washer and moving contact mounting screw in this order beginning wit the side of insulated operation rod See Fig 82 6 After installing the moving and or stationary contact be sure to perform 10 20 cycles of open close operation and then retighten the contact mounting screws to the specified torque ...

Страница 92: ...t cover 4 Remove the contact block fixing screws as shown in Fig 70 5 Flip the contact block up as shown in Fig 71 6 Turn the LRC mounting screws eight or ten turns to loosen disconnect the manual connector green and then remove the LRC See Fig 84 Fig 84 Removing the LRC 7 Reinstall each part or component in reverse order of removal after inspection When installing the LRC make sure the nameplate ...

Страница 93: ...ng screws as shown in Fig 70 5 Flip the contact block up as shown in Fig 71 6 Turn the SHT mounting screws eight or ten turns to loosen disconnect the manual connector black and then remove the SHT See Fig 86 Fig 86 Removing the SHT 7 Reinstall each part or component in reverse order of removal after inspection When installing the SHT make sure the nameplate on the SHT can be viewed from the front...

Страница 94: ... cover 4 If the ACB is equipped with the ON OFF cycle counter disengage the hook located under the cycle counter spring turn the cycle counter fixing screw two or three turns to loosen do not remove and flip the cycle counter up to the upper right direction See Fig 88 Fig 88 Flipping the ON OFF cycle counter 5 Unscrew the OCR mounting screws and remove the wiring from the wire tie See Fig 89 Fig 8...

Страница 95: ...ounting screws A and B raise the relay base to unlatch from other parts remove the base and place it on the top of the breaker body To remove relay base mounting screw B use a ball end type 4 mm Allen wrench See Fig 91 When relay base mounting screw A the relay base ground terminal will also be removed Fig 91 Relay base and related parts Latch Relay base mounting screw A Pan head M5 12 with spring...

Страница 96: ...ntrol relay from the relay base Fig 92 Control relay and related parts 10 Reinstall each part or component in reverse order of removal after inspection Do not forget to install the OCR ground terminal and the relay base ground terminal Relay retainer Control relay Relay seat ...

Страница 97: ...onnector red and remove the MHT Fig 93 Removing the MHT 4 Reinstall each part or component in reverse order of removal after inspection Fig 94 provides the general view of the MHT Fig 94 General view of MHT MHT mounting screw Pan head M4 8 2 with spring and flat washers Tightening torque 1 3 1 7 N m Hand connector red MHT mounting screw MHT Hand connector red Moving core Moving core stroke measure...

Страница 98: ...the cover 3 Remove the auxiliary switch mounting screws shown in Fig 95 Fig 95 Auxiliary switches and related parts 4 Depressing the AUX lock lever shown in Fig 96 raise the operation lever till a shaft lever see Fig 97 appears in the top of draw out cradle Fig 96 AUX lock lever and operation lever AUX lock lever Operation lever Auxiliary switches Auxiliary switch mounting screw Pan head M4 x 10 4...

Страница 99: ...tall each part or component in reverse order of removal after inspection When installing the auxiliary switch unit apply molybdenum grease to the engagement of the operation lever and the shaft lever Auxiliary contacts can be checked visually through the inspection holes shown in Fig 98 Fig 98 Checking auxiliary contacts Operation lever Shaft lever Auxiliary switches Inspection holes Auxiliary con...

Страница 100: ...os 5 and 11 in Table 42 OK No NG NG Contact Terasaki OK Check the charging mechanism See No 12 in Table 42 Supply correct voltage Repair NG Repair Is motor charging possible No Contact Terasaki Yes Contact Terasaki No Is manual charging possible Yes End System alarm occurs Is SYS2 indicated No Is SYS1 indicated Yes Yes Check operating mechanism See No 12 in Table 42 Normal CheckcontrolcircuitandMH...

Страница 101: ...NG NG NG No Is manual closing possible No Charge Move the body to the CONN TEST or ISOLATED position Unlock Deactivate Supply correct voltage Repair replace Repair Contact Terasaki Yes Do operation indication contacts work well No Check contacts See Nos 9 10 in Table 42 and Nos 6 7 in Table 43 OK Check the operation mechanism See No 12 in Table 42 OK Is manual closing Possible Yes Check the operat...

Страница 102: ...trol circuit See No 11 in Table 42 OK Check the tripping operation See No 27 in Table 43 OK Check contacts See Nos 9 10 in Table 42 and No 7 in Table 43 OK Is the problem solved No Contact Terasaki No NG NG NG Yes Correct adjust Repair Contact Terasaki Repair replace End The ACB cannot be opened Is manual opening Possible Yes Check the operation voltage and SHT voltage OK Check the control circuit...

Страница 103: ...s fully closed and locked before attempting to draw out or rack in the ACB from any of thee three positions CONNECTED TEST ISOLATED to another When moving the ACB body care should be taken not to damage the door interlock pin situated at the bottom left and protruding from the ACB Interlock Release The door interlock can be defeated by releasing the spring actuated catch on the interlock panel uni...

Страница 104: ...t plate This will push against the handle shutter less moving it towards the centre of the hole When the handle shutter is at the right of the hole turn the adjustment plate upside down with the double side to the top This will push against the handle shutter more moving it towards the centre of the hole ACB FRONT COVER CENTRE LINE AR440SB ...

Страница 105: ...SB AR4 AR440S The mechanical interlock system allows up to three ACBs to be selectively turned on or off to the configured requirement Please read these instructions carefully to ensure correct operator use The Manufacturer assumes no responsibility for the damage resulting from non application or incorrect application of the instructions provided herein The contents of this manual may be subject ...

Страница 106: ...ng installation Failure to do so may result in damage to the interlock or personal injury Do not bend the interlock cables at the radius of less than 200mm Doing this may result in damage to the interlock cables causing the interlock to fail Insert the interlock wire until it stops at the grove end of the lever Insufficient insertion of the wire could result in damage to the interlock Be sure to a...

Страница 107: ...he main circuit and the auxiliary switch A contact in all the ACBs The body of the other ACB s as long as they are off open can be drawn out or inserted irrespective of the state of the other ACB s NOTE Do not draw out or insert an ACB body during cable installation adjustment or operation check Specifications ACB front cover centre line There should be a minimum of 200mm gap left between the inte...

Страница 108: ...oes not permit correct installation of the interlock cables If the ACBs are draw out types do not insert the bodies into the chassis until the installation of the interlock system has been complete If the ACBs are fixed insure the ACBs are locked off during installation Cable Connections The following illustration shows he connections between the ACBs Mounting the Cables When installing the interl...

Страница 109: ...rque of 12 5N m If the distance is out of the specfied range proceed to step 8 to adjust the distance 3 5 4 7 If the ACBs are of a draw out type insert the ACB bodies into the chassis to the connected position Do not turn the ACB s on until it is in the connected position If the ACB is a fixed typed unlock the ACB After making sure the main circuit is not energised check the operation of the ACB s...

Страница 110: ...e is out of the specified range readjust it If the ACBs are of a draw out type insert the ACB bodies into the chassis to the connected position Do not turn the ACB s on until it is in the connected position If the ACB is a fixed type unlock the ACB After making sure the main circuit is not energised check the operation of the ACB s Do not touch the interlock during operation Published in March 200...

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