Eaton Cutler-Hammer DSII Series Скачать руководство пользователя | Manualshive

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Courtesy of NationalSwitchgear.com

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Содержание Cutler-Hammer DSII Series

Страница 1: ...I B 694C694 02 Instructions for Installation Operation and Maintenance of Low Voltage Power Circuit Breakers Types DSll and DSLll Effective 07 97 Supersedes l B 694C694 01 dated July 1995 Courtesy of NationalSwitchgear com ...

Страница 2: ...Courtesy of NationalSwitchgear com ...

Страница 3: ...ries consult the applicable Instruction Book or other descriptive publications Page iii For application information consult Cutler Hammer Inc see applicable Descriptive Bulletins Application Publications and or Industry Standards SAFETY All safety codes safety standards and or regulations must be strictly observed in the installation operation and maintenance of this equipment A WARNING THE WARNIN...

Страница 4: ...1 3 4 2 Primary Stationary Contact Assembly 12 3 5 lnterphase Barriers 12 3 6 DE ION Arc Chutes Interrupter Assemblies 14 3 7 Electronic Tripping System 14 3 7 1 Electronic Trip Unit 16 3 7 2 Sensors 16 3 7 3 Trip Actuator 16 3 8 Operating Mechanism 17 3 8 1 Manually Operated Circuit Breaker 17 3 8 2 Power Operated Circuit Breaker 18 3 9 Movable Primary and Secondary Contacts 18 3 1 O Standard and...

Страница 5: ...cuit Breaker and Fuse Truck 41 4 6 1 DSLll Current Limiters 42 4 6 2 Blown Limiter Indicator 42 4 6 3 Fuse Truck 42 4 6 4 Fuse Truck Installation and Use 43 4 6 5 Fuse Replacement 43 4 6 6 Blown Fuse Indicator 43 SECTION 5 INSPECTION AND MAINTENANCE 5 1 General 45 5 2 General Cleaning Recommendations 45 5 3 When to Inspect 45 5 4 What to Inspect 45 5 4 1 DSll 308 Through DSll 620 Inspection 46 5 4...

Страница 6: ...cal FronVRear Views of Power Operated Spring Charge Mechanism 18 Type DSll Circuit Breaker Bottom View 19 Anti Pump Relay Shown Unmounted 19 Power Operated DSll Breaker Front Cover Removed 20 Latch Check Switch Operation 21 Undervoltage Trip Attachment Operation 21 Overcurrent Trip Switch Operation 22 Close Bar Guard Shown Installed 22 Manual Charging of Breaker Closing Springs 23 Principal Parts ...

Страница 7: ...and Anti Rebound Latch 51 5 7 Levering Mechanism 52 5 8 Left Side of Mechanism Lubrication Points 54 5 9 Right Side of Mechanism Lubrication Points 54 5 1 O Shunt Trip Device Lubrication 54 5 11 Spring Release Device Lubrication 54 5 12 Trip Shaft Lubrication 55 Table 1 1 1 2 2 1 3 1 4 1 5 1 Effective 07 97 TABLES Title Page Type DSll Breaker Ratings 2 Type DSLll Breaker and Combination Ratings 3 ...

Страница 8: ...Courtesy of NationalSwitchgear com ...

Страница 9: ...ounted series connected current limiters The purpose of the current limiters is to extend the inter rupting rating of the standard DSll breaker Figure 1 3 Page 1 The Type DSll breaker is a four position drawout Connect Test Disconnect and Remove design sup plied with either a manually or electrically operated two step stored energy mechanism This type of mechanism assures positive control at the i...

Страница 10: ...D POWER LEVELS AVAILABLE IN AND AROUND THIS EQUIPMENT WHEN IT IS IN OPERATION ARE EXTREMELY DANGEROUS AND COULD BE FATAL UNDER NO CIRCUMSTANCES SHOULD INTERLOCKS AND OTHER SAFETY FEA TURES BE MADE INOPERATIVE AS THIS MAY RESULT IN DEATH BODILY INJURY OR PROPERTY DAMAGE 1 3 SAFETY PRACTICES To pro ect personnel associated with the installation operation and maintenance of this equipment the fol low...

Страница 11: ...ear and tag circuits in accordance with established safety practices 1 5 OTHER PUBLICATIONS AND DOCUMENTATION In addition to this instruction manual other printed infor mation and documentation is available and supplied as appropriate This additional information can include but not necessarily be limited to an instruction manual for the specific electronic trip unit being used with the circuit bre...

Страница 12: ...age 4 Figure 1 3 Type DSLI Breaker with Integral Current Limiters l B 694C694 02 Figure 1 4 DSll Breaker Shown on Compartment s Captive Extension Rails Effective 07 97 Courtesy of NationalSwitchgear com ...

Страница 13: ...ker is designed and balanced to be easily lifted from the shipping container using the appro priate lifting yoke and an overhead or portable lifting device A CAUTION DO NOT ATTEMPT TO LIFT BREAKERS WITH ORDI NARY CRANE HOOKS ROPES CHAINS OR OTHER SUCH DEVICES FAILURE TO FOLLOW THIS CAU TION COULD RESULT IN DAMAGE TO VITAL PARTS SUCH AS ARC CHUTES BARRIERS AND WIRING Effective 07 97 Page 5 2 2 1 ST...

Страница 14: ...ARNING INTERPHASE BARRIERS ASSIST IN MAINTAINING PROPER CLEARANCES AND MUST BE IN PLACE Figure 2 1 OSI Breaker with Lifting Yoke Installed l B 694C694 02 AT ALL TIMES DURING CIRCUIT BREAKER OPERA TION WITHIN A BREAKER COMPARTMENT Remove the three arc chutes which are mounted on top of the pole units Each arc chute is held in place by one top inserted screw Figure 2 3 A WARNING ARC CHUTES MUST ALWA...

Страница 15: ...he breaker levering mechanism arms are in the REMOVE position Figure 2 4 If they are not turn the levering crank in the direction required to get the lev ering arms in the REMOVE position Carefully push the circuit breaker into the breaker compartment until it physically stops Begin turning the levering crank in a clockwise direction Initially it helps to push a bit on the front of the breaker whi...

Страница 16: ...g device to insure that it will be iso lated or carrying NO current before it can be levered to the DISCONNECT position Dummy elements require the same size compartment as an equivalent Type DSll breaker of the same frame size 2 7 FIXED CIRCUIT BREAKER The Type DSll Fixed Circuit Breaker differs from the drawout version in that it has no levering device primary disconnects and secondary disconnect...

Страница 17: ...nects 11 Main Disconnect El Levering Device Arm 11 Metal Faceplate lfl Trip Unit El Emergency Charge Handle II Trip Unit Sensors involving the mechanism control and or accessory devices can be easily accomplished Page 9 DSll Circuit Breakers are available with either a manual ly operated or electrically operated two step stored energy mechanism It provides positive control of the closing instant S...

Страница 18: ... Main Disconnect El Isolating Transformer II Trip Unit Sensor II Arc Chute l B 694C694 02 3 2 TYPE DSLll LIMITER CIRCUIT BREAKER Type DSLll Circuit Breakers are coordinated combina tions of standard DSll Circuit Breakers and series con nected current limiters The primary purpose of the cur rent limiters is to extend the interrupting rating of the DSll Circuit Breaker up to 200 000 amps Figure 3 2 ...

Страница 19: ... RESULTING IN EQUIPMENT DAM AGE BODILY INJURY AND OR DEATH Effective 07 97 Page 11 3 3 BASIC BREAKER ASSEMBLY The basic breaker assembly includes a chassis a con trol panel an operating mechanism a tripping system a levering in device drawout breakers only various required interlocks and three insulated pole unit assem blies The control items needed for proper operation of the breaker are located ...

Страница 20: ...ressure The stationary arcing contacts are similar for all frame sizes and consist of two parallel fingers one on each side of the upper main terminal They are spring loaded toward each other by compression springs and have arc resisting tips The previously described moving arcing contact wedges the stationary contact fingers apart as the breaker closes In addition the parallel action of the magne...

Страница 21: ...pe DSll 308 Pole Unit Assembly Front View Figure 3 5 Type DS 308 Pole Unit Assembly Rear View Effective 07 97 Insulating Link Moving Main Contact Assembly Pivot Block Insulating Link Adjusting Nut Upper Terminal Lower Terminal Sensor Removed Page 13 Courtesy of NationalSwitchgear com ...

Страница 22: ...e vertical steel splitter plates having an inverted V notch to attract the arc and interrupt it by essentially cooling and stretching the arc In addition to steel plates the larger arc chutes include l B 694C694 02 Figure 3 7 Type DS 516 Pole Unit Assembly Rear View hard arc resistant glass polyester plates These plates produce turbulence in the exhaust gases above the steel plates and prevent ele...

Страница 23: ...lug Protection Function Settings Trip Actuator 600 Ohms Nominal Resistance Typical Digitrip RMS Ill Trip Unit Assembly Typical DSll Type Circuit Breaker Sensors Figure 3 10 Typical Type DSll Tripping System Diagram Effective 07 97 Alternate ground locations may be required to meet installation requirements Page 15 Courtesy of NationalSwitchgear com ...

Страница 24: ... set at nomi Trip Shaft Lever OTA Actuator Frame Untripped Figure 3 11 Type OSI Trip Actuator Tripped l B 694C694 02 nal values For specific overload tripping characteristics to coordinate with the load or system refer to the specif ic trip unit instruction book 3 7 2 SENSORS Three current sensors are installed at the rear of the circuit breaker on the lower studs directly behind the main dis conn...

Страница 25: ...age 17 3 8 1 MANUALLY OPERATED CIRCUIT BREAKER On manually operated circuit breakers the closing springs can be charged only by hand This is accom plished through the use of a front mounted spring charge handle The spring charge handle used with manually operated circuit breakers is significantly longer than the handle used with power operated circuit break ers Actual closing of the breaker is don...

Страница 26: ...ring release latch Like the manually operated circuit breaker the power operated circuit breaker can also be closed manually by pushing on the front control panel close bar Figure 3 3 Like the manually operated version the power operated circuit breaker can also be tripped open manually by pushing the trip plate on the front control panel or the trip plate on the circuit breaker compartment door P...

Страница 27: ...The spring release coil is energized through the anti pump relay the motor cut off Effective 07 97 Page 19 Figure 3 15 Anti Pump Relay Shown Unmounted switch and a normally closed b auxiliary switch con tact which operates the spring release latch to release the closing springs 3 10 3 ANTI PUMP RELAY M Power operated breakers have an anti pump relay mounted in the upper left front portion of the b...

Страница 28: ...osed con tacts or five normally open and five normally closed con tacts are available for use on both manually and power operated breakers 3 10 7 UNDERVOLTAGE TRIP ATTACHMENT UVTA The undervoltage trip attachment is optional on both manually or power operated breakers The undervoltage trip attachment is an electromechanical device that trips the breaker when the voltage on its coil falls to betwee...

Страница 29: ...ip unit due to phase or ground overcurrent Tripping by the trip plate shunt trip device undervoltage trip device and other such methods does not cause it to operate Effective 07 97 Page 21 Breaker Open Position Pole Shaft Trip Bar Breaker Closed Breaker Closed Position Figure 3 18 Undervoltage Trip Attachment Operation It is mounted on and operates from the trip actuator of the breaker Three stand...

Страница 30: ...ERATION COUNTER The operation counter is a mechanical counter used to provide a record of the number of breaker operations Figure 3 3 The counter is linkage connected to the pole shaft Figure 3 19 Overcurrent Trip Switch Operation l B 694C694 02 Table 3 1 Compatible Circuit Breakers and Compartments DSll 308 DSll 508 DSll 608 DSll 516 DSll 616 DSll 620 DSLll 308 DSLll 516 DSLll 620 Breakers Accept...

Страница 31: ...panel will also indicate Spring Charged A CAUTION DO NOT RELEASE THE CHARGING HANDLE BEFORE THE CHARGING OPERATION IS COMPLET ED IF THE HANDLE IS RELEASED BEFORE THE OPERATION IS COMPLETED THE HANDLE WILL RETURN TO ITS NORMAL POSITION WITH A VELOC ITY GREAT ENOUGH TO BREAK THE CHARGING HANDLE KNOB OR CAUSE BODILY INJURY Standard manually operated circuit breakers can only be closed by hand using t...

Страница 32: ...he handle is upright and the springs discharged Figure 4 3 The springs are fully charged by an almost 90 degree move ment downward of the charging handle as previously detailed in Paragraph 4 1 It is possible to manually recharge the closing springs immediately after closing the breaker and before it has been tripped open This results in the springs loading the associated bearings and latches for ...

Страница 33: ... positions 1 Closing springs charged as viewed looking into right end of crankshaft Figure 4 6a 2 Closing springs discharged partial view Refer to Figure 4 5 The basic elements are mounted on the crank shaft 8 This is a straight shaft with four flats machined on it and a crank arm 11 attached to each end Each crank arm connects to its closing spring 9 by a formed spring end 10 in Figure 4 6b The r...

Страница 34: ...mergency Charge Pawl Oscillator Crank Shaft Emergency Charge Device Crank Arm Closing Spring l B 694C694 02 21 20 Reset Spring Closing Spring Anchor Pole Shaft Motor Emergency Charge Handle Motor Crank and Handle Moving Contact Assembly Insulating Link Main Drive Link Figure 4 4 Principal Parts in Power Operated Mechanism Close Spring Shown in Charged Position Effective 07 97 Courtesy of NationalS...

Страница 35: ...or Cut Off Switch Lever Draw Out Unit Base Motor Cut Off Switch Ratchet Bushing Ratchet Wheel Hold Pawl Oscillator Bushing Spacers 3 Stop Bracket i Thrust Bearing and Races Drive Plates 2 Emergency Charge Device Pawl Lifter Oscillator Pawl Oscillator Mechanism Side Frame Right Hand Mechanism Side Frame Left Hand Figure 4 5 Crank Shaft Assembly Front View Some Parts Omitted for Clarity Effective 07...

Страница 36: ...r CrankArm Spring End Ratchet Wheel b Spring Discharged Oscillator Pawl j Oscillator Drive Plate Motor Crank Roller Ratchet Wheel Pin Figure 4 6 Power Operated Spring Charge Details Oscillator Bushing Oscillator Spring Closing Spring Crank Shaft Hold Pawl l B 694C694 02 Effective 07 97 Courtesy of NationalSwitchgear com ...

Страница 37: ...close cam Effective 07 97 Page 29 The springs are released to close the breaker When the breaker closes the b contact opens to cut off the spring release coil SR and motor MOT and the limit switch LS contacts reset If the close contact CS C is maintained the anti pump relay Y will be picked up by the current through the spring release coil SR and will open its Y contact in the spring release SR ci...

Страница 38: ... Lever Pin Moving Contact Arm Stationary Arcing Contact Moving Contact Pivot Pin Main Drive Link Main Roller Spring Release Latch Insulating Link Adjusting Stud and Locknut Insulating Link Mechanism Side Frame Hardened Latch Surfaces e Trip Shaft Latch Details a Breaker Open Springs Charged Spring Charged Position Corresponding to this Closing Cam Position Shown in Fig 4 2 Figure 4 7 Four Basic Po...

Страница 39: ...plates in Figure 4 6a spring charged breaker open The breaker is now ready to be closed Closing is start ed by counterclockwise rotation of the spring release latch Figure 4 7b This removes the hold on the close cam stop roller and allows the force of the closing springs to rotate the close cam counterclockwise and close the breaker The linkage is then in the position Effective 07 97 shown in Figu...

Страница 40: ...vice STA Shunt Trip Attachment Y Anti Pump Relay UVTA Undervoltage Trip Attachment Optional ICD j I BOTIOM LEFT ROW When Viewed From Front of Breaker LS Contacts if N C Contacts Open When Closing Springs are Fully Charged 65 N O Contacts Close When Closing Springs are 64 Fully Charged 18 e 68 64 3 4 66 8 67 7 Figure 4 9 Basic Schematic and Connection Diagrams for Power Operated Breaker AUXILIARY S...

Страница 41: ... of operation it causes some extra shock on the mechanism parts Therefore trip free operations should be avoided 7 5 4 Page 33 The trip shaft can be rotated to trip the breaker in a number of ways 1 Breaker Trip Plate Figure 3 3 Pushing the trip plate will trip the breaker This item has a tab which pushes against a pin on the trip shaft which applies a direct rotating force on the shaft in the tri...

Страница 42: ...sed electrically or manual ly l B 694C694 02 4 The breaker can be withdrawn from the compartment by direct pull The levering device is not engaged with the cradle at this point 5 The levering device arms are in a horizontal position with their rollers pointing toward the rear Figure 2 4 4 5 2 DISCONNECT POSITION In the DISCONNECT position the breaker has moved only a fraction of an inch into its c...

Страница 43: ...ter Pivot Pin Shutter Interlock Pin j Pole Shaft Levering Device Shaft Trip Shaft Trip Shaft Pin Tripping Tab Trip Plate Trip Plate Hook 8 Levering Device Crank Handle 2 11 f l______ b Shutter Trip Plate Held in Tripped Position Figure 4 11 Shutter Trip Plate and Trip Shaft Relationship Effective 07 97 Page 35 Courtesy of NationalSwitchgear com ...

Страница 44: ...sing of the breaker while being driven in either direction by the levering device or while it is standing in any intermediate position between TEST and CONNECT or DISCONNECT Figure 4 11a shows the shutter and trip plate for normal operation such as in the DISCONNECT TEST or CONNECT positions The breaker can be closed and tripped open by all avail able devices in the latter two positions except for...

Страница 45: ...ge 37 interlock pin and the shutter returns to its closed posi tion when the levering crank is removed The levering device arms are now almost vertically downward Figure 4 12c shows the DISCONNECT position Here the cam also rotates so as to block the shutter interlock pin while the breaker is between positions thus holding the shutter open When the exact position as shown on the indicator is reach...

Страница 46: ... screw is omit ted the interlock plate can be rotated freely on the shaft about 1Odegrees This is because the wide slot is con l B 694C694 02 siderably wider than the drive pin If the interlock screw is in place in the narrow slot the interlock plate has practically no play and is forced to rotate exactly as much as the levering device rotates Figure 4 13c shows the standard arrangement without th...

Страница 47: ...ck Screw 0 Levering Device Shaft Narrow Slot Wide Slot b Breaker in Remove Position d Breaker in Connect Position With Interlock Screw See Paragraph 4 5 7 j Pin A Pin B close Bar Close Bar Pivot Close Bar Cam Levering Device Arm Figure 4 13 Close Release Interlock to Discharge Springs on Levering Out Effective 07 97 Page 39 Courtesy of NationalSwitchgear com ...

Страница 48: ... the close bar is pushed the upper end of the spring release latch link swings free to the right because the indicator pin is not there to stop it Consequently no force is applied to the vertical arm of the bell crank and nothing else happens 4 5 10 PADLOCKING PROVISION Figure 4 15 shows the essential parts of the padlock interlock The breaker is padlocked in the trip free condi tion Figure 3 3 In...

Страница 49: ...late places the pin in the padlock inter lock lever behind the notch in the padlock plate With the padlock plate held forward the padlock interlock lever cannot move Consequently the projection from the trip plate is held in the slot in the padlock interlock lever This holds the breaker locked in the trip free con dition until the padlock is removed and the members are returned to their normal pos...

Страница 50: ...ociated compartment For this reason there is no fixed mounted version of the DSLll circuit breaker 4 6 2 BLOWN LIMITER INDICATOR The blown limiter indicator provides a visual indication on the front of the DSLll circuit breaker when a current limiter in any phase has interrupted a short circuit It also insures that the circuit breaker will be tripped when any current limiter has blown This prevent...

Страница 51: ...ithdrawn from its com partment the fuses can be removed by unbolting them from the conductors on the fuse truck This is a relative ly uncomplicated procedure on the DSll FT40 fuse truck because there is sufficient working space within Effective 07 97 Page 43 the truck Since the DSll FT32 fuse truck is more space restricted it is necessary to first remove the front cover levering device assembly an...

Страница 52: ... Blown Limiter Indicator I Figure 4 19 DSll FT32 Fuse Truck Rear View l B 694C694 02 Figure 4 18 DSll FT32 Fuse Truck Front View Figure 4 20 DSll FT32 Fuse Truck Front Cover Removed Effective 07 97 Courtesy of NationalSwitchgear com ...

Страница 53: ... for the equipment Careful and accurate doc umentation of all maintenance activities provides a valu able historical reference on equipment condition over time 5 2 GENERAL CLEANING RECOMMENDATIONS Circuit breaker cleaning activities should be a part of an overall activity that includes the assembly in which the circuit breaker is installed Loose dust and dirt can be emoved from external surfaces u...

Страница 54: ... according to Paragraph 5 5 3 Also check the dimension A between the stationary l B 694C694 02 arcing contacts and the center section of the cage If this dimension is not 02 inches or greater the station ary arcing contacts should be replaced NOTICE Be certain that all barriers and arc chutes are replaced after the inspection is completed 5 4 2 DSll 632 AND DSll 840 850 INSPECTION In addition to t...

Страница 55: ...dimensions The A dimensions Dimension A I 020 Minimum Both Sides Breaker Closed These Faces Parallel Breaker Closed Figure 5 1 DS 308 Contacts and Adjustments Effective 07 97 Page 47 should be approximately equal If not trip the breaker and adjust the fixed contact system until alignment is obtained Tighten the screws and contacts as described in Paragraph 5 5 2 5 4 5 ARC CHUTES The V shaped slots...

Страница 56: ...ace of the pawl If the face is chipped distorted or bro ken it should be replaced B 1 These Faces Parallel Breaker Closed Figure 5 2 DS 5161620 Contacts and Adjustments l B 694C694 02 5 5 FACTORY ADJUSTMENTS NOTICE These adjustments are required only when a major overhaul has been performed not during normal maintenance procedures Type DSll Circuit Breakers are designed and built with very few adj...

Страница 57: ... of the breaker L Dimension A 020 Minimum Both Sides Breaker Closed I l t _ __ J _ 1 I I I I I I Breaker Closed PinX Figure 5 3 DS 632 Contacts and Adjustments Effective 07 97 Page 49 Factory settings adjustments should only be necessary when parts are reassembled after dismantling as described in Paragraphs 5 5 1 and 5 5 2 Maintenance adjustments should be made as indicated on maintenance inspect...

Страница 58: ...crew clockwise until the breaker trips This is the no overlap position Dimension A C 1 020 Minimum Both Sides fl m C Breaker Closed Figure 5 4 DSll 8401850 Contacts and Adjustments l B 694C694 02 3 Conclude by rotating the adjusting screw four turns in a counterclockwise direction 5 5 2 BREAKER OPEN POSITION STOP ADJUSTMENT DSll 632 ONLY The proper adjust procedure is as follows 1 Refer to Figure ...

Страница 59: ...t Trip Shaft Latch Surface Main Drive Link Trip Shaft Adjusting Screw Trip Actuator a Shunt Trip b Trip Shaft Adjustment Figure 5 5 Shunt Trip Details Showing Trip Shaff Adjustment CD Anti Rebound Latch Open Position Stop adjustable for DSll 632 only Figure 5 6 Open Position Stop and Anti Rebound Latch Effective 07 97 Page 51 Courtesy of NationalSwitchgear com ...

Страница 60: ...anism l B 694C694 02 The DSll 632 and DSll 840 850 have two adjusting studs on each pole Both adjusting studs must be moved together to retain the parallelism Refer to the Renewal Parts Data Book if a pictorial reference is needed to make the adjustment A spring type locking clip holds the adjustment for the DSll 632 For the DSll 840 850 locking nuts similar to those used with the DSll 516 620 hol...

Страница 61: ...ker that has been stored should be operated a minimum of five times before being put in service 5 6 2 LUBRICANT LOCATION NOTICE All parts of the levering mechanism have sufficient lubrication and should not require any further attention Figure 5 7 Effective 07 97 Page 53 The following numbered lubrication point references cor respond to the numbers shown on Figures 5 8 through 5 12 Molykote BR 2 P...

Страница 62: ...echanism Lubrication Points Figure 5 1O Shunt Trip Device Lubrication l B 694C694 02 Figure 5 9 Right Side of Mechanism Lubrication Points Figure 5 11 Spring Release Device Lubrication Effective 07 97 Courtesy of NationalSwitchgear com ...

Страница 63: ...I B 694C694 02 Page 55 Figure 5 12 Trip Shaft Lubrication Effective 07 97 Courtesy of NationalSwitchgear com ...

Страница 64: ...B 694C694 02 reference name and item number as shown in the Renewal Parts Data Book Also include the breaker type shop order number or style number as shown on the nameplate on the front cover of the circuit breaker Some of the detailed parts shown in the figures in this manual will be available only as a part of a sub assem bly Certain parts due to manufacturing or installation procedures are onl...

Страница 65: ...Courtesy of NationalSwitchgear com ...

Страница 66: ...RPOSE OR MERCHANTABILITY OR WARRANTIES ARISING FROM COURSE OF DEAL ING OR USAGE OF TRADE ARE MADE REGARDING THE INFORMATION RECOMMENDATIONS AND DESCRIPTIONS CONTAINED HEREIN In no event will Cutler Hammer be responsible to the purchaser or user in contract in tort including negligence strict lia bility or otherwise for any special indirect incidental or consequential damage or loss whatsoever incl...

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