Cutler-Hammer Digitrip 3000 Instructions For Installation, Operation And Maintenance Download Page 46

Page: 46 / 66

I.B. 17555

Page 41

Effective 03/97

Figure 7-1 Inverse Time Overcurrent Phase, I

T Curves (SC-5390-92B)

100

200

500

1000

.02

.01

.05

100

200

500

1000

2000

5000

10000

.02

.01

.05

100

200

500

1000

2000

5000

10000

0.2 Seconds at 3 per Unit

6 Seconds at 3 per Unit

40 Seconds at 3 per Unit

TIME IN SECONDS

MULTIPLES OF In VALUE

Adjustable Inverse Time Overcurrent Pickup (x In) (0.2 . . . . . . 2.2)

Adjustable Inverse Time Overcurrent Time Multiplier
(Sec. @ 3 x In) (0.2 s . . . . 40 s)

Tolerance:
Inverse Time Overcurrent Pickup is

Long Delay Time Multiplier is

10% or

0.09 s whichever is larger

Minimum Trip Time is 0.05 s

Note:
Pickup of 0.2 x with Inverse Time Overcurrent Time of 40 s
@ 3 x makes T > 10000 s

Summary of Contents for Digitrip 3000

Page 1: ...I B 17555 Effective 03 97 Cutler Hammer Instructions for Installation Operation and Maintenance of the Cutler Hammer Digitrip 3000 Protective Relay ...

Page 2: ...Settings 6 2 1 5 Integral Testing 10 2 1 6 Communications 10 2 2 Protective Relay Hardware 11 2 2 1 Front Operations Panel 11 2 2 2 Rear Access Panel 14 2 2 3 External Hardware 16 2 3 UL Testing and Specification Summary 16 SECTION 3 OPERATION 18 3 1 Introduction 18 3 2 Power Up and Self Testing 18 3 3 Panel Operations 18 3 3 1 Characteristic Curve 18 3 3 2 Program Mode 24 3 3 3 Programming Overvi...

Page 3: ...e Power Application 35 5 5 2 Initial Power Application 36 5 6 Miscellaneous Testing 36 SECTION 6 MAINTENANCE AND STORAGE 37 6 1 General 37 6 1 1 Storage 37 6 2 Troubleshooting Guide Table 6 1 37 6 3 Replacement 37 SECTION 7 TIME CURRENT CURVES 40 7 1 Digitrip 3000 Inverse Time Overcurrent Curves 40 7 2 Digitrip 3000 Curve Equations 60 ...

Page 4: ... Diagram for Typical Phase Zone Selective Interlocking 32 4 2 Connection Diagram for Typical Ground Zone Selective Interlocking 33 5 1 Cutout Dimensions Inches 34 5 2 Digitrip 3000 Protective Relay Dimensions Inches 35 7 1 Inverse Time Overcurrent Phase I4T Curves SC 5390 92B 41 7 2 Inverse Time Overcurrent Phase I2T Curves SC 5391 92B 42 7 3 Inverse Time Overcurrent Phase IT Curves SC 5392 92B 43...

Page 5: ...6 2 2 Characteristic for Phase Element 7 2 3 Characteristic for Ground Element 8 2 4 Miscellaneous Settings 9 2 5 Factory Set Defaults 10 3 1 Digitrip 3000 Curve Shapes 18 3 2 Digitrip 3000 Display Messages 30 5 1 Digitrip 3000 Dip Switch Settings 36 6 1 Troubleshooting Guide 38 ...

Page 6: ... cost of capital loss of power additional expenses in the use of existing power facilities or claims against the purchaser or user by its customers resulting from the use of the information and descrip tions contained herein 1 1 2 SAFETY PRECAUTIONS All safety codes safety standards and or regulations must be strictly observed in the installation operation and maintenance of this device THE WARNIN...

Page 7: ...s plus ANSI and IEC inverse time overcurrent curves provide close coordina tion with both downstream and upstream protective devices One Digitrip 3000 Protective Relay replaces the normal complement of three or four conventional electro mechanical overcurrent relays an ammeter a demand ammeter an ammeter switch and in some sit uations a lockout relay switch device 86 All Digitrip 3000 Protective R...

Page 8: ... mode security is provided by a sealable hinged access cover on the front of the relay Direct reading displays indicate the value currently being considered while multi colored LEDs indicate opera tional conditions and specific functions Figure 1 1 In addition to performing a continuous self testing of internal circuitry as a part of normal operation all Digitrip 3000 Protective Relays include a f...

Page 9: ...ctive interlocking capabilities for phase and ground fault pro tection Zone selective interlocking is a means by which two or more coordinated trip devices can communicate to alter their pre set tripping modes to provide a faster response for certain upstream fault conditions The relay is shipped with the zone selective interlocking feature disabled by the use of the two jumpers on the rear mounte...

Page 10: ...rform 1 Interrogation of relay data 2 Execution of circuit breaker Close and Trip commands 3 Reset of the relay after a trip 4 Downloading of settings Reliable two way communications can be provided over a twisted pair communications network The Digitrip 3000 Protective Relay is supplied with a built in commu nications capability compatible with the Cutler Hammer IMPACC system 1 4 STANDARDS Digitr...

Page 11: ... considered in the coordination study and in the programming of the Digitrip 3000 Protective Relay Example Thermal Curves Short Delay and Instantaneous settings using In CT Rating In 1200A Pickup Setting 1 5 Pickup amps 1200 1 5 1800A Example ANSI and IEC curves using Ipu CT Rating 1200A Ipu Pickup Current 1800A CT Ratio 1200 5 Entered as 1200 Actual secondary current at pickup 7 5A 1800 1200 x 5 ...

Page 12: ...0 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 4 0 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 5 0 Curve IECA IECB IECC IECD 10 IECA SC 6688 96 0 05 0 10 0 15 0 20 0 25 0 30 0 35 IECB SC 6689 96 0 40 0 45 0 50 0 55 0 60 0 65 0 70 IECC SC 6690 96 0 75 0 80 0 85 0 90 0 95 1 00 IECD SC 6691 96 SHORT DELAY PICKUP 1 00 1 25 1 50 1 75 2 00 2 25 2 50 10 SC 5394 92B 2 75 3 00 3 50 4 00 4 50 5 00 5 50 6 00 6 50 7 00 7 50 8...

Page 13: ...5 4 6 4 7 4 8 4 9 5 0 Curve IECA IECB IECC IECD 10 IECA SC 6688 96 0 05 0 10 0 15 0 20 0 25 0 30 0 35 IECB SC 6689 96 0 40 0 45 0 50 0 55 0 60 0 65 0 70 IECC SC 6690 96 0 75 0 80 0 85 0 90 0 95 1 00 IECD SC 6691 96 SHORT DELAY PICKUP 0 100 0 125 0 150 0 175 0 200 0 225 10 SC 5403 92B 0 250 0 275 0 300 0 350 0 400 0 450 0 500 0 550 0 600 0 650 0 700 0 750 0 800 0 850 0 900 0 950 1 00 1 25 1 50 1 75...

Page 14: ...instantaneous trip mode for 10 cycles after the breaker closes The breaker will trip instantaneously via the dis criminator if the fault current is above 11 times In After the 10 cycle period has passed the discriminator will no longer be functional It becomes functional again only when the breaker opens and then is reclosed Ground Fault After the phase instantaneous setting is established the gro...

Page 15: ...ctable Trip and No Trip test settings for both phase and ground testing Refer to Table 2 4 for available test set tings The P used in Table 2 4 refers to a phase current test setting while the G refers to a ground current test setting T in the table means that the test will initiate a breaker trip All settings are in per unit current values times the In value which is the selected CT rating THE TE...

Page 16: ...of the unit the trip relays and the trip alarm relay will automatically reset when the circuit breaker is opened after a trip Program Mode Pushbutton Blue The Program Mode pushbutton which is accessed by opening the sealable hinged access cover is used to enter and exit the program mode When this pushbutton is pressed and released the program LED flashes and setpoints can be altered DIP Switch S2 ...

Page 17: ... DAISY CHAINED TIE SHIELDING TOGETHER FOR END TO END CONTINUITY SOME PROD UCTS WILL PROVIDE AN EXTRA TERMINAL FOR A TIE POINT FOR THE CABLE SHIELD LEADS CIRCUIT BREAKER TRUCK OPERATED CELL TOC SWITCH SHOWN FOR CIRCUIT BREAKER IN CONNECTED POSITION IS OPTIONAL TO AUTOMATICALLY DISCONNECT RELAY FROM THE COMMUNICATION NETWORK WHEN CIRCUIT BREAKER IS IN THE TEST POSITION ON LAST DEVICE IN NETWORK TIE ...

Page 18: ... be green and blink on for approximately one second and then off for one second This indicates that the relay is functioning properly in its normal operation mode If this LED is blinking red it indicates the relay may need reprogramming If this LED is lit in any color shade other than a definite green or red or if it is not blinking at all an internal problem has been detected requiring replacemen...

Page 19: ...ate and is labeled RMS Amperes A second window is located in the lower portion of the faceplate adjacent to the program and test LEDs It is labeled Settings Test Time Trip Cause RMS Amperes Window This window has a five digit numeric display It is used to show 1 Present phase or ground currents 2 Largest phase or ground demand currents since last reset 3 Fault current displayed after a trip until ...

Page 20: ...the breaker s 52b auxiliary switch contact closes The Trip Alarm Relay however remains energized until the Reset Pushbutton is depressed or a RESET COMMAND is received from a communication system master In this mode after a trip is initiated and the breaker has opened the display will BLINK the cause of the trip in the Trip Cause window and the RMS Ampere window will show the fault current mag nit...

Page 21: ...c Discharge Test ESD Rating of 8kV IEC 255 22 3 ENV50140 Radiated RF Immunity ENV 50141 Conducted RF Immunity CISPR 11 Class A CFR 47 FCC Part 15 Subpart b Class A ANSI C37 90 TOTAL COMPLIANCE UL Required Make and Carry Ratings Sec 6 7 Temperature Test Sec 7 Dielectric Test Sec 8 Surge Withstand Test Sec 9 UL 1053 UL REQUIRED Current Withstand Test Sec 27 Control Power Test Sec 18 Output Test Sec ...

Page 22: ...D GROUND TIME CURRENT CURVES Thermal It Moderately Inverse I 2 t Very Inverse I 4 t Extremely Inverse FLAT Definite Time ANSI Moderately Inverse Per ANSI C37 112 1996 Very Inverse Extremely Inverse IEC IEC A Moderately Inverse Per IEC 255 3 1989 IEC B Very Inverse IEC C Extremely Inverse IEC D Definite Time PHASE OVERCURRENT PICKUP RANGES Inverse Time Overcurrent Setting 0 2 to 2 2 x In 28 setting...

Page 23: ...rom as shown in Table 3 1 These curves were discussed briefly in Sections 1 and 2 The operating characteristics of the relay are graphically represented by time current characteristic curves shown in Figure 3 2 As shown in Figure 3 2 the ANSI and IEC Curve Shapes are in terms of multiples of Ipu Pickup Current of the CT Primary whereas short delay and instantaneous are in terms of multiples of In ...

Page 24: ...DEN 9463 CABLE FAMILY OR IDENTICAL EQUIVALENT COMMSCOPE OR QUABBIN CABLES A B CIRCUIT BREAKER TRUCK OPERATED CELL SWITCH SHOWN WITH CIRCUT BREAKER IN DISCONNECTED POSITION IS RECOMMENDED SO THAT THE TRIP UNIT CAN BE PROGRAMMED WHEN CIRCUIT BREAKER IS NOT IN CONNECTED POSITION THE 52b CONTACT IS REQUIRED FOR PROPER OPERATION OF THE DIGITRIP MV TRIP UNIT TC CS T TB2 14 TD TB2 15 TB2 12 INST TB2 13 5...

Page 25: ...uld always be evaluated to deter mine if the results under all possible circumstances are acceptable This helps to avoid unexpected operations or non operations in the future Such possibilities are high lighted at the end of this discussion as a reminder when establishing relay characteristic parameters Inverse Time Overcurrent Protection Inverse time overcurrent protection consists of a curve sha...

Page 26: ...rtical time line movement with an I2 t curve shape selection Similar movement occurs for the remaining curve shapes Short Time Protection Short time fault protection responds to short circuit conditions Similar to the inverse time overcurrent func tion the short time function is comprised of a short time current pickup setting and a short delay time setting The Short Delay pickup setting establish...

Page 27: ...ortion of the curve A flat response curve is automatic When a short delay pickup setting other than NONE is selected the Short Delay pickup and the Short Delay Time portions of the overall curve are moved horizontal ly and vertically in a similar manner to the inverse time protection functions Refer to Figures 3 6 and 3 7 for graphic illustrations of this movement Note that the scope of protection...

Page 28: ...ping action based on a selected low value for Inverse Time Over current Time Multiplier The expected tripping action will not take place at the expected time if the Short Delay Time selected is in the higher end of time selection pos sibilities It should also be noted that this situation is similar for other curve selections The only thing that changes with different curve selections is the genera...

Page 29: ... design features when programming the unit to closely coordinate with system protective needs 1 When NONE is selected as a setting the associat ed tripping function is disabled 2 When NONE is selected for the Phase Instantaneous Setting a Phase Discriminator option is offered 3 The internal design of the Digitrip 3000 Protective Relay is such that the Short Delay Time setting might take precedence...

Page 30: ... Pickup setting both the Instantaneous Pickup LED and the Phase LED will blink green Refer to Table 2 2 for the available instanta neous settings Once a selection other than NONE is made and the Select Settings pushbutton is pressed and released the unit steps to the next setpoint If NONE is the setting selected and the Select Settings pushbutton is pressed and released the Phase and Instantaneous...

Page 31: ... An overview of the programming function is presented here in terms of two flow charts These flow charts are intended as quick references after the material present ed in Section 3 3 2 has been reviewed The flow chart entitled Programming Sequence Preview Figure 3 10 presents the general program ming steps the Digitrip 3000 follows always beginning with the Curve Shape selection Each time the Sele...

Page 32: ...ertically in Table 2 4 The Raise and Lower pushbuttons will move the display between the setpoints for each of the four groups Within a group the setpoints move horizontally Table 2 4 Pressing and releasing the Test pushbutton will initiate the selected test When the initiated test is complete the appropriate front panel LEDs will be red to indicate the cause of the trip The alphanumeric display s...

Page 33: ...se or Lower PB Setting OK To Change To Accept Press and Release Program Mode Pushbutton PB If NONE Setting Selected Discrim inator ON OFF Continued Use Raise or Lower PB Setting OK To Change To Accept Press Select Settings PB and Move to Phase Inverse Time Overcurrent Pickup Press Select Settings PB and Move to Phase Inverse Time Overcurrent Time Multiplier Press Select Settings PB and Move to Pha...

Page 34: ...tting OK To Change To Accept Use Raise or Lower PB Setting OK To Change To Accept Press Select Settings PB and Move to Ground Short Delay Press Select Settings PB and Move to Ground Short Delay Time or Ground Instantaneous Press Select Settings PB and Move to Ground Instantaneous Press Select Settings PB and Move to High Load Setting Press Select Settings PB and Move to Frequency Setting Press Sel...

Page 35: ...he inverse time overcurrent function SDT Digitrip 3000 tripped via the short delay function INST Digitrip 3000 tripped via the instantaneous function DISC Digitrip 3000 tripped via the discriminator function EXTT External trip via INCOM communications OVER Override trip Digitrip 3000 tripped via 100 per unit fixed instantaneous ORNG Overrange value trip value is greater than 28 per unit Table 3 2 ...

Page 36: ...hen a Digitrip 3000 initiates a trip signal the zone interlocking signal stays active for an additional 175 mil liseconds Therefore if a downstream Digitrip 3000 is zone interlocked to an upstream Digitrip 3000 the downstream breaker will have 175 milliseconds to clear the fault before the upstream Digitrip 3000 is allowed to react to that same fault Zone interlocking therefore provides fast tripp...

Page 37: ... ON FIG 3 1 MAXIMUM DISTANCE BETWEEN FIRST AND LAST ZONE SHOULD BE 250 FEET ROUTE SEPARATE FROM POWER CONDUCTORS JUMPER ON DEVICES IN LAST ZONE USED TO PROVIDE TIME DELAY PER INVERSE TIME OVERCURRENT OR SHORT DELAY TIME SETTING IF JUMPER NOT USED DIGITRIP 3000 WILL INITIATE TRIP WITHOUT TIME DELAY NOMINALLY 0 1 SECONDS UP TO 10 DIGITRIP DEVICES MAY BE WIRED IN PARALLEL TO PROVIDE A SINGLE UPSTREAM...

Page 38: ...ypical Ground Zone Selective Interlocking NOTES FOR GROUND ZONE INTERCONNECTION CABLE SEE CABLE SPECIFICATIONS ON FIG 3 1 MAXIMUM DISTANCE BETWEEN FIRST AND LAST ZONE SHOULD BE 250 FEET ROUTE SEPARATE FROM POWER CONDUCTORS JUMPER ON DEVICES IN LAST ZONE USED TO PROVIDE TIME DELAY PER INVERSE TIME OVERCURRENT OR SHORT DELAY TIME SETTING IF JUMPER NOT USED DIGITRIP 3000 WILL INITIATE TRIP WITHOUT TI...

Page 39: ...In particular the horizontal dimensions between the center of the mounting holes and the vertical edge of the cutout must be within 0 and 0 050 in 0 13 cm 5 2 2 MOUNTING Do not use a tap on the face of the relay since this will remove excessive plastic from the holes resulting in less threaded material to secure the relay to it mounting panel Place the Digitrip 3000 Protective Relay through the cu...

Page 40: ... 4 The Digitrip 3000 comes with zone interlocking jumpers installed TB1 Terminals 11 to 12 and 13 to 14 Depending on the application of zone interlock ing these jumpers may have to be removed All wiring must conform to applicable federal state and local codes 5 5 INITIAL STARTUP The information here is intended to be used when first applying control power to the Digitrip 3000 Protective Relay 5 5 ...

Page 41: ...current transformer inputs These inputs have a 3000 volt ac breakdown rating for 1 minute between phases 2 The relay output contacts COMMUNICATIONS CLOSE TRIP INST AND TRIP OC COMMUNICA TIONS have a 2000 volt ac breakdown rating for 1 minute between open contacts The relays trip alarm and protection off alarm have a 1000 volt ac break down rating 3 All other terminals have a 1500 volt ac breakdown...

Page 42: ...DEATH ALWAYS DISCONNECT AND LOCK OUT THE CUR RENT SOURCE AND CONTROL POWER SUPPLY BEFORE TOUCHING THE COMPONENTS ON THE REAR OF THE DIGITRIP 3000 PROTECTIVE RELAY 6 3 REPLACEMENT Follow these procedural steps to replace the Digitrip 3000 Protective Relay Step 1 Turn off control power at the main disconnect or isolation switch of the control power supply If the switch is not located in view from th...

Page 43: ...rogram Setpoints Paragraph 3 3 2 Replace Protective Relay if Symptom Paragraph 6 3 Persists PGRM Appears in Setpoints are Invalid Reprogram Setpoints Paragraph 3 3 2 Settings Display Window Check sum did not Match Replace Protective Relay if PGRM Paragraph 6 3 Reappears After Saving Settings ERR Appears in Setting There was an Error During Make Sure DIP switch S2 is in Table 5 1 Setpoint Programmi...

Page 44: ...er Wiring from Check Trip Relay Wiring Figure 3 1 Indicates a Trip but Protective Relay NOTE Instantaneous and Override Circuit Breaker Doesn t Trip Functions Close the Open Contact Between TB2 12 and TB2 13 while Inverse Time Overcurrent and External Trip Functions Close the Contact Between TB2 14 and TB2 15 Check that Trip Contact on Protective Figure 3 1 Relay makes Unit in Test Mode with No Se...

Page 45: ...ge 40 Effective 03 97 SECTION 7 TIME CURRENT CURVES 7 1 DIGITRIP 3000 INVERSE TIME OVERCURRENT CURVES The specific time current curves applicable to the Digitrip 3000 Protective Relay are included in this sec tion ...

Page 46: ...conds at 3 per Unit 6 Seconds at 3 per Unit 40 Seconds at 3 per Unit TIME IN SECONDS TIME IN SECONDS MULTIPLES OF In VALUE MULTIPLES OF In VALUE Adjustable Inverse Time Overcurrent Pickup x In 0 2 2 2 Adjustable Inverse Time Overcurrent Time Multiplier Sec 3 x In 0 2 s 40 s Tolerance Inverse Time Overcurrent Pickup is 5 Long Delay Time Multiplier is 10 or 0 09 s whichever is larger Minimum Trip Ti...

Page 47: ...000 2000 5000 10000 0 2 Seconds at 3 per Unit 40 Seconds at 3 per Unit TIME IN SECONDS TIME IN SECONDS MULTIPLES OF In VALUE MULTIPLES OF In VALUE 6 Seconds at 3 per Unit Adjustable Inverse Time Overcurrent Pickup x In 0 2 2 2 Adjustable Inverse Time Overcurrent Time Multiplier Sec 3 x In 0 2 s 40 s Tolerance Inverse Time Overcurrent Pickup is 5 Inverse Time Overcurrent Time Multiplier is 10 or 0 ...

Page 48: ...2000 5000 10000 0 2 Seconds at 3 per Unit 40 Seconds at 3 per Unit TIME IN SECONDS TIME IN SECONDS MULTIPLES OF In VALUE MULTIPLES OF In VALUE Adjustable Inverse Time Overcurrent Pickup x In 0 2 2 2 Adjustable Inverse Time Overcurrent Time Multiplier Sec 3 x In 0 2 s 40 s Tolerance Inverse Time Overcurrent Pickup is 5 Inverse Time Overcurrent Time Multiplier is 10 or 0 09 s whichever is larger Not...

Page 49: ...1000 2000 5000 10000 02 01 05 1 2 5 1 2 5 10 20 50 100 200 500 1000 2000 5000 10000 0 2 Seconds TIME IN SECONDS TIME IN SECONDS MULTIPLES OF In VALUE MULTIPLES OF In VALUE Adjustable Inverse Time Overcurrent Pickup x In 0 2 2 2 Adjustable Inverse Time Overcurrent Time Multiplier 0 2 s 2 s Tolerance Inverse Time Overcurrent Pickup is 5 Inverse Time Overcurrent Time Multiplier is 50 ms and 50 ms 2 S...

Page 50: ...1 2 5 10 20 50 100 200 500 1000 2000 5000 10000 Lowest Pickup With Shortest Time Highest Pickup With Longest Time Typical Inverse Time Overcurrent Function TIME IN SECONDS TIME IN SECONDS MULTIPLES OF In VALUE MULTIPLES OF In VALUE Adjustable Short Delay Settings x In 1 0 11 None Adjustable Short Delay Time 0 05 s 1 5 s Tolerance Short Delay Setting is 10 Short Delay Time is 50 ms or 50 ms Short D...

Page 51: ...TIME IN SECONDS TIME IN SECONDS MULTIPLES OF In VALUE MULTIPLES OF In VALUE Inverse Time Overcurrent Pickup 1 0 x Inverse Time Overcurrent Time Multiplier 10 s 3 x In I A 2 T Short Delay Setting 11 x Short Time Delay 1 5 s Note The dashed section is part of the curve removed by software The Short Delay Time is used as the shortest trip time possible in Inverse Time Overcurrent or Short Delay Typic...

Page 52: ... 5 1 2 5 10 20 50 100 200 500 1000 2000 5000 10000 TIME IN SECONDS TIME IN SECONDS MULTIPLES OF In VALUE MULTIPLES OF In VALUE Adjustable Instantaneous Trip Phase Element 1 25 x In None Adjustable Instantaneous Trip Ground Element 0 5 11 x In None Tolerance Instantaneous Setting is 10 Instantaneous uses the Instantaneous Contact Ground Lowest Setting Phase Lowest Setting Ground Highest Setting Pha...

Page 53: ...t TIME IN SECONDS TIME IN SECONDS MULTIPLES OF In VALUE MULTIPLES OF In VALUE Adjustable Inverse Time Overcurrent Ground Pickup x In 0 1 2 0 None Adjustable Inverse Time Overcurrent Time Multiplier Ground Sec 1 x In 0 2 s 40 s Tolerance Inverse Time Overcurrent Pickup is 5 Inverse Time Overcurrent Time Multiplier is 10 or 09 s whichever is larger Minimum Trip Time is 0 05 s Note Pickup of 0 2 x wi...

Page 54: ...0 2000 5000 10000 TIME IN SECONDS TIME IN SECONDS MULTIPLES OF In VALUE MULTIPLES OF In VALUE Adjustable Inverse Time Overcurrent Ground Pickup x In 0 1 2 0 None Adjustable Inverse Time Overcurrent Time Multiplier Ground Sec 1 x In 0 2 s 40 s Tolerance Inverse Time Overcurrent Pickup is 5 Inverse Time Overcurrent Time Multiplier is 10 or 075 s whichever is larger Minimum Trip Time is 0 05 s 0 2 Se...

Page 55: ...0 10000 TIME IN SECONDS TIME IN SECONDS MULTIPLES OF In VALUE MULTIPLES OF In VALUE Adjustable Inverse Time Overcurrent Ground Pickup x In 0 1 2 0 None Adjustable Inverse Time Overcurrent Time Multiplier Ground Sec 1 x In 0 2 s 40 s Tolerance Inverse Time Overcurrent Pickup is 5 Inverse Time Overcurrent Time Multiplier is 10 or 075 s whichever is larger Flat after 30 x In Minimum Trip Time is 0 05...

Page 56: ... 2 5 1 2 5 10 20 50 100 200 500 1000 2000 5000 10000 TIME IN SECONDS TIME IN SECONDS MULTIPLES OF In VALUE MULTIPLES OF In VALUE Adjustable Inverse Time Overcurrent Ground Pickup x In 0 1 2 0 None Adjustable Inverse Time Overcurrent Time Multiplier Ground 0 2 s 2 s Tolerance Inverse Time Overcurrent Pickup is 5 Inverse Time Overcurrent Time Multiplier is 50 ms or 50 ms Lowest Pickup and Shortest T...

Page 57: ... 01 05 1 2 5 1 2 5 10 20 50 100 200 500 1000 2000 5000 10000 TIME IN SECONDS TIME IN SECONDS MULTIPLES OF In VALUE MULTIPLES OF In VALUE Adjustable Short Delay Ground Settings x In 0 1 11 None Adjustable Short Delay Time Ground 0 05 s 1 5 s Tolerance Short Delay Setting is 10 Short Delay Time is 50 ms or 50 ms Short Delay uses the O C Contact Lowest Pickup and Shortest Time Highest Pickup and Long...

Page 58: ...00 2000 5000 10000 02 01 05 1 2 5 1 2 5 10 20 50 100 200 500 1000 2000 5000 10000 Time Multiplier TIME IN SECONDS TIME IN SECONDS MULTIPLES OF PICKUP CURRENT I Ipu Adjustable Time Multiplier 0 1 5 0 Tolerance Time Multiplier Tolerance is 10 or 0 09 s whichever is larger 1 5 x Ipu For Ground Pickup 0 2pu trip time tolerance is 15 5 0 3 0 2 0 1 0 0 5 0 3 0 2 0 1 MULTIPLES OF PICKUP CURRENT I Ipu ...

Page 59: ...2000 5000 10000 02 01 05 1 2 5 1 2 5 10 20 50 100 200 500 1000 2000 5000 10000 Time Multiplier TIME IN SECONDS TIME IN SECONDS Adjustable Time Multiplier 0 1 5 0 Tolerance Time Multiplier Tolerance is 10 or 0 09 s whichever is larger 1 5 x Ipu For Ground Pickup 0 2pu trip time tolerance is 15 5 0 3 0 2 0 1 0 0 5 0 3 0 2 0 1 MULTIPLES OF PICKUP CURRENT I Ipu MULTIPLES OF PICKUP CURRENT I Ipu ...

Page 60: ... 01 05 1 2 5 1 2 5 10 20 50 100 200 500 1000 2000 5000 10000 Time Multiplier TIME IN SECONDS TIME IN SECONDS Adjustable Time Multiplier 0 1 5 0 Tolerance Time Multiplier Tolerance is 10 or 0 09 s whichever is larger 1 5 x Ipu For Ground Pickup 0 2pu trip time tolerance is 15 Minimum Trip Time is 2 power line cycles 5 0 3 0 2 0 1 0 0 5 0 3 0 2 0 1 MULTIPLES OF PICKUP CURRENT I Ipu MULTIPLES OF PICK...

Page 61: ...000 5000 10000 02 01 05 1 2 5 1 2 5 10 20 50 100 200 500 1000 2000 5000 10000 Time Multiplier TIME IN SECONDS TIME IN SECONDS Adjustable Time Multiplier 0 05 1 00 Tolerance Time Multiplier Tolerance is 10 or 0 09 s whichever is larger 1 5 x Ipu For Ground Pickup 0 2pu trip time tolerance is 15 0 05 0 10 0 15 0 20 0 30 0 50 0 70 1 00 MULTIPLES OF PICKUP CURRENT I Ipu MULTIPLES OF PICKUP CURRENT I I...

Page 62: ...1 2 5 1 2 5 10 20 50 100 200 500 1000 2000 5000 10000 Time Multiplier TIME IN SECONDS TIME IN SECONDS Adjustable Time Multiplier 0 05 1 00 Tolerance Time Multiplier Tolerance is 10 or 0 09 s whichever is larger 1 5 x Ipu For Ground Pickup 0 2pu trip time tolerance is 15 Minimum Trip Time is 2 power line cycles 0 05 0 10 0 15 0 20 0 30 0 50 0 70 1 00 MULTIPLES OF PICKUP CURRENT I Ipu MULTIPLES OF P...

Page 63: ...1 05 1 2 5 1 2 5 10 20 50 100 200 500 1000 2000 5000 10000 Time Multiplier TIME IN SECONDS TIME IN SECONDS Adjustable Time Multiplier 0 05 1 00 Tolerance Time Multiplier Tolerance is 10 or 0 09 s whichever is larger 1 5 x Ipu For Ground Pickup 0 2pu trip time tolerance is 15 Minimum Trip Time is 2 power line cycles 0 05 0 10 0 20 0 30 0 50 0 70 1 00 MULTIPLES OF PICKUP CURRENT I Ipu MULTIPLES OF P...

Page 64: ... 05 1 2 5 1 2 5 10 20 50 100 200 500 1000 2000 5000 10000 02 01 05 1 2 5 1 2 5 10 20 50 100 200 500 1000 2000 5000 10000 Time Multiplier TIME IN SECONDS TIME IN SECONDS Adjustable Time Multiplier 0 05 1 00 Tolerance Time Multiplier Tolerance is 0 05 s 1 0 70 50 30 20 15 10 05 MULTIPLES OF PICKUP CURRENT I Ipu MULTIPLES OF PICKUP CURRENT I Ipu ...

Page 65: ... 0 IEC B Very Inverse 1 13 5 0 IEC C Extremely Inverse 2 80 0 IEC D Definite Time 0 4 T Trip Time D Time Multiplier 0 2 to 40 I Input Current M Slope 0 FLAT 1 IT 2 I2 T 4 I4 T K 3 for phase 1 for ground T D A B I P I pu 1 SLOPE M IT 1 I2 T 2 I4 T 4 FLAT 0 Where I Input Current Ipu Pickup Current Setting D Time Multiplier Setting D 0 1 to 3 0 1 5 0 step of 0 1 D 0 5 to 1 0 step of 0 05 ANSI IEC Cur...

Page 66: ... equipment is the contract between the purchaser and Cutler Hammer NO WARRANTIES EXPRESSED OR IMPLIED INCLUDING WARRANTIES OF FITNESS FOR A PAR TICULAR PURPOSE 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 i...

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