Cutler-Hammer Digitrip RMS 610, Instructions Manual

Page 1: ...g 3 4 Short Delay Current Setting 3 5 Short Delay Time Setting 3 6 Instantaneous Current Setting 3 7 NO Instantaneous Current Setting 3 8 Ground Fault Current Setting 3 9 Ground Fault Time Delay Setting 4 0 Test Procedures 4 1 General 4 2 When to Test 4 3 Testing Provisions 4 4 Conducting Tests 4 4 1 Not Tripping the Breaker 4 4 2 Tripping the Breaker 4 5 Testing Back up Battery Inside Rating Plug...

Page 2: ...ion TRIP Indicators The Green Light Emitting Diode LED in the lower right corner of the Trip Unit Fig 1 blinks once each second to indicate the Trip Unit is operating normally Note If the LED is steadily GREEN i e not blink ing the Trip Unit is not ready Check the 120 VAC control power to the Power Relay Module if the LED is not blinking See Section 1 4 The LEDs shown in Figs 1 and 3 1 thru 3 6 on...

Page 3: ...Front Pjn I 5 FH V 9 S Section 1 4 S3ir I f Y 3V II l rY CK FF cf Circww w Custom Designed l RtllAfi Inieg aiefl Circun P wq Connector S ct oA 3 TtfMJW rtka O Gfouivr Cafibctfwi SpRE Chip 1 jZo 5 fon r v r P 3 1 O CK I T ip _ 9 coad A n CeAfar 0 9 if rm i Giuw Jfowrt Tne A Comae v W O AUl r Co Kl 1 a Aij m C 1 UOAU LOWFR H UO Volt Luni Oi Pow Po r Reia Modufci 5 Sact i Fig 2 RMS Digitrip 610 Trip ...

Page 4: ... TRIP OPERATION THE AUTOMATIC LOCKOUT AFTER TRIP FEATURE OF THE DIGITRIP RMS 610 TRIP UNIT MAINTAINS THE CIRCUIT BREAKER IN A TRIP FREE CONDITION PRO VIDED 120 VAC CONTROL POWER REMAINS AVAIL ABLE TO THE POWER RELAY MODULE THE TRIP UNIT MUST BE RESET BEFORE THE CIRCUIT BREAKER CAN BE CLOSED AGAIN THE RESET CAN BE ACCOMPLISHED BY PRESSING AND RELEASING THE TRIP RESET PUSH BUTTON SEE FIG 1 After an ...

Page 5: ... Fault Time Memory X X X X X X X X X X X X X X X 3 8 3 9 3 9 1 1 5 3 9 Trip Unit Over Temp TRIP X X X X X X 1 1 Fig 3 1 Digitrip RMS 610 Type LI Auto Lock Out after TRIP 1 1 2 c c c c c c LED Indicators on TRIP Unit Trip Unit Status OK Blinking Long Time Delay TRIP Short Time Delay TRIP X X X X X X X X X X X X X X X X 1 1 2 1 1 2 1 1 2 INStantaneous TRIP OverRIDe DISCriminator TRIP Ground Fault TR...

Page 6: ... 1 3 H Littitam Battry Owy IW WC 1JK1 Long Delay Time U Q Oetev Sarong H 8C AT V 6 r Snort Delay Settrny h 8rejNt Trro AT 61 SFT Iasi Amps 6n i Fault Setting Snert Delay CPC Fast Time I S 6 MP7 gn H4i Fig 3 6 Digitrip RMS 610 Type LSIG Fig 3 4 Digitrip RMS 610 Type LIG F T N Effective 5 97 Courtesy of NationalSwitchgear com ...

Page 7: ...he normal service conditions with the circuit breaker closed the Digitrip 610 serves as an ammeter displaying the individual phase currents lA lB lc and ground current lG or the fourth pole neutral current lD provided the circuit breaker is set up for ground or fourth pole protection Current values are displayed in kA The value displayed is current in the pole or ground indi cated by the Green LED...

Page 8: ...u r e T r i p T E S T T E S T r e a d y t o b e g i n X X X X X X X X X X X X I TABLE 3 LEGEND X Function Included n Circuit Breaker must be equipped for Neutral Protection 1 n a tor Type DS Breakers 1 2 2 1 ROM Error See I L If you see the message ROM Error See I L scrolling across the display window it means that a non fatal error has been detected somewhere in the Trip Unit s memory The conditi...

Page 9: ... Control power is out Trip unit not ON NOTES i In the case of a high level fault condition where fast tripping is desirable the Trip Unit will operate before a complete RMS current value can be calculated For this reason the displayed value may be less than the actual RMS fault current In the case of a very high fault current greater than 28 x ln the message ORNG indicating over range appears beca...

Page 10: ...value ln is the basis for the Trip Unit current settings The Instantaneous and Ground Current Settings if applicable are multiples of ln See Sections 3 6 and 3 8 The Long Delay Current Setting lr is a multiple of ln Long Delay Current Setting r LD x ln See Section 3 2 The Short Delay Current Setting if provided is a multi ple of r which in turn is a multiple of ln Short Delay Current Setting S D x...

Page 11: ...r TRIPS due to conditions which exceed the Ground Fault protection settings For Type LS LI and LSI Trip Units the Neutral Current Alarm contact operates when the neutral current exceeds the Long Delay Current protection setting lr Even without available external control power once the load current through the circuit breaker exceeds approxi mately 20 40 if single phase of the frame current sensor ...

Page 12: ...justment appears in its respective rectangular viewing window as illustrated in Fig 1 The installed rating plug establishes the maximum con tinuous current rating ln up to but not exceeding the Frame Rating of the circuit breaker Instantaneous and ground current settings are defined in multiples of ln To illustrate the effect of each protection curve setting simulated Time Current curves are pictu...

Page 13: ...Rating Plug Fig 8 3 Short Delay Current Settings 3 5 Short Delay Time Setting As illustrated in Fig 8 4 there are two different Short Delay curve shapes i e fixed time flat and l2t response The shape selected depends on the type of selective coordination chosen The l2t response will pro vide a longer time delay in the low end of the short delay current range than will the flat response Five flat 1...

Page 14: ...h on the rating plug label see Fig 4 and on the applicable I Time Current Curve referenced in Section 5 3 6 TABLE 4 GROUND FAULT CURRENT SETTINGS GROUND FAULT CURRENT SETTINGS AMPERES i D E F K B C H A 100 40 50 60 100 25 30 35 75 200 70 80 100 120 150 200 50 60 188 250 75 88 100 125 150 250 63 225 300 90 105 120 150 180 300 75 240 300 400 120 140 160 200 400 100 360 450 600 180 210 240 300 600 15...

Page 15: ... for up to five 5 times the Ground Fault Time Setting After that time it does reset auto matically The GTM function does reset rather quickly on the 0 1 second setting for example it will reset in 0 5 second 3 9 Gnd Fault Time l 3 Sec O 0 Available Settings 1 2 3 4 5 Seconds with Flat Response 1 l2t Shape Returns to Flat Responses at Approximately T 0 625 ln 1 3 5 Seconds With t l2t Shape In Viewi...

Page 16: ...breaker TRIP GFT Ground Current Test and TRIPS breaker GF Ground Current Test NO breaker TRIP See Section 4 4 2 for inser vice test trip limitations est Amps 3 xln ing 0 Microprocessor Functions Trip Release Trip Settings LEDs Display Panel Zone Interlocking Function Power Relay Module Rating Plug there are some parts it cannot check for example Test O Trip O Reset Push then release button to rese...

Page 17: ...s are made Before starting any test sequence check the Unit Status Green LED in the lower right corner of the Trip Unit See Figs 1 and 9 to be sure it is blinking on and off about once each second which indicates that the Trip Unit is functioning normally In the event the Unit Status LED is not blinking install an Auxiliary Power Module APM See Fig 7 or if you have already installed one check to s...

Page 18: ...tructions to Test itself when the load current exceeds 50 of lr Place the TEST AMPS selector switch See Fig 9 in either the 6T or GFT position Press and release the Black TEST push button See Fig 9 the test starts when the push button is released and the elapsed time is displayed in the window At least one of the various protection settings will be less than 6 x ln and the circuit breaker will tri...

Page 19: ...167R Typical Time Current Characteristic Curves for R Frame Circuit Breakers SC 5626 93 Instantaneous I SC 5627 93 Long Delay and Short Delay LS SC 5628 93 Ground G I L 29C714 Master Connection Diagram for Series CR R Frame Circuit Breakers Type CR 1 3N DL 1 3N Duracell South Broadway Tarrytown NY 10591 914 591 7000 CR 1 3N Sanyo Electric Inc Battery Div 200 Riser Road Little Ferry NJ 07643 LIST O...

Page 20: ...arly in the event that the feeder breaker Z2 would not clear the fault the main breaker Z1 will clear the fault in 0 5 s as above LIST OF TABLES Table 1 Digitrip RMS 610 Protection Functions 2 Digitrip RMS 610 Information Functions 3 Trip Unit Message Codes and Their Meanings 4 Ground Fault Current Settings Codes Appendices APPENDIX A Zone Interlocking Example APPENDIX B Interpreting Display Codes...

Page 21: ...ed N c c Short Delay Output Signal to Higher Level Zone Short Delay Input Signal from Lower Level Zone Ground Output Signal to Higher Level Zone Ground Input Signal from Lower Level Zone lr 0 1 Sec 100 A SO Z3 SI GO GO CO 3 Gl CD C o Gl N 2 Fault at Location 2 Fig A 1 Typical Zone Interlocking Ground Fault Protection M2 Ml c c so so SI SI 0 5 Sec 0 5 Sec SO SI 1N4004 l F22 0 3 Sec F11 F12 D1 F21 F...

Page 22: ...several times to be sure you see val ues of currents in all phases and ground neutral as applicable The High Load Relay in the Power Relay Module see Figs 2 5 and Section 1 4 would have been picked up after a 40 second delay to close the remote High Load Alarm Contact Press and release the TRIP RESET push button to reset the High Load Relay Contact CASE 1 Overload Trip Operation and High Load Cond...

Page 23: ...d messages values of current in the display window memory and cause of trip LEDs will turn OFF while the Remote Alarm Contacts of the signal relay in the Power Relay Module will reset open Following any corrective actions and or inspec tions of the circuit breaker and related equipment re close the circuit breaker to restore power to the load circuit 3 CASE 2 Instantaneous Trip Operation Instantan...

Page 24: ... FOR A PAR TICULAR PURPOSE OR MERCHANTABILITY OR WARRANTIES ARISING FROM COURSE OF DEALING OR USAGE OF TRADE ARE MADE REGARDING THE INFORMATION RECOMMENDATIONS AND DESCRIP TIONS CONTAINED HEREIN In no event will Cut ler Hammer Inc be responsible to the purchaser or user in contract in tort including negligence strict liability or otherwise for any special indirect incidental or conse quential dama...