Eaton Digitrip RMS 910, Инструкция

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Instruction Leaflet I. L. 29-889B
Effective June 2011
Instructions for Digitrip RMS 910 Trip Unit
eaton corporation
www.eaton.com
is reset (see Section 5 .9) . The Trip Unit displays "EXTT" in its window
and sends back the "EXTT message over INCOM to the remote
master computer . (Note that the values of the currents through the
circuit breaker will be "zero" when it is OPEN .)
WARNING
UNEXPECTED SIGNALS TO "CLOSE' OR "TRIP' A CIRCUIT BREAKER FROM
A REMOTE LOCATION BY THE COMMUNICATIONS NETWORK CAN CAUSE
PERSONAL INJURY TO MAINTENANCE PERSONNEL WORKING IN THE
IMMEDIATE VICINITY OF THE CIRCUIT BREAKER. PROVIDE PERMISSIVE
CONTROL SWITCHES, OR OTHER MEANS, LOCALLY AT THE CIRCUIT
BREAKER FOR MAINTENANCE PERSONNEL TO USE IN CONTROLLING
REMOTE "CLOSE" OR "TRIP" SIGNALS. FOR DETAILED INFORMATION
CONCERNING THE BREAKER CONTROL CIRCUITS NECESSARY TO
IMPLEMENT PERMISSIVE CONTROL LOCALLY, REFER TO THE CIRCUIT
BREAKER CONNECTION DIAGRAMS LISTED IN SECTION 6.
5.9 Remote Resetting of the Trip Unit
 NOTICE
BEFORE RESETTING TRIP UNIT, BE SURE TO:
• RECORD DISPLAY VALUES OF ALL PERTINENT PARAMETERS.
• NOTE WHICH CAUSE OF TRIP LEDS ARE LIGHTED "RED”.
• CORRECT THE CAUSE OF THE OVERCURRENT OR FAULT CONDITION
THAT CAUSED THE BREAKER TO TRIP.
BECAUSE THE AUTOMATIC LOCKOUT-AFTER-TRIP FEATURE OF THE
DIGITRIP RMS 910 TRIP UNIT MAINTAINS THE CIRCUIT BREAKER IN A
"TRIP-FREE" CONDITION. THE TRIP UNIT MUST BE RESET AFTER EACH
TRIP OPERATION (WHETHER INITIATED BY OVER-CURRENT CONDITIONS
OR BY REMOTE INCOM
®
/ IMPACC
®
SIGNAL), BEFORE THE BREAKER CAN
BE CLOSED AGAIN. THE RESET CAN BE ACCOMPLISHED EITHER LOCALLY
BY PRESSING AND RELEASING THE "TRIP RESET" PUSH BUTTON (SEE
FIGURE 1), OR REMOTELY BY THE IMPACC
®
SYSTEM.
Although the reset can be accomplished locally by pressing and
releasing the "TRIP RESET push button (see Figure 1), it is some-
times inconvenient or untimely to go to the circuit breaker in order
to reset the Trip Unit . For such cases where the circuit breaker is
far from the plant control room, the IMPACC
®
system provides the
User with a means for resetting the circuit breaker through the com-
munications network "Trip Unit Reset" command . Executing the Trip
Unit Reset command remotely from the master computer by the
INCOM
®
/ lMPACC
®
system is exactly equivalent to pressing and
releasing the "Trip Reset" push-button on the front of the Trip Unit .
In addition to the Trip Unit Reset capability, the INCOM
®
/ IMPACC
®
communications capability of the Trip Unit provides the User with a
means for resetting several parameter values stored in the Trip Unit's
memory . Using the proper commands, the User can view and reset
the following trip event buffer parameters remotely: time of trip, val-
ues of phase and ground currents, number of electronically initiated
trip operations, peak [power] demand, energy, and the cause of trip .
6 references
6.1 Digitrip RMS Trip Assemblies
I .L . 29-885 lnstructions for Digitrip RMS 510 Trip Unit
I .L . 29-886 lnstructions for Digitrip RMS 610 Trip Unit
I .L . 29-888 lnstructions for Digitrip RMS 810 Trip Unit
I .L . 29-889 lnstructions for Digitrip RMS 910 Trip Unit
6.2 Type DS Low-Voltage AC Power Circuit Breakers
I .B . 33-790-1 lnstructions for Low Voltage Power Circuit
Breakers Types DS and DSL
Supplement B Digitrip RMS 510, 610, and 910 Trip Units with
to I .B . 32-790-1 Types DS and DSL Low Voltage Power Circuit
Breakers
AD 32-870 Typical Time-Current Characteristic Curves for
Types DS and DSL Circuit Breakers
SC-5619 Instantaneous (I)
SC-5620 Long Delay and Short Delay (LS)
SC-5621 Ground (G)
508B508 Connection Diagram for Type DS Circuit Breakers
6.3 Type DS II Low-Voltage AC Power Circuit Breakers
I .B . 694C694 Instructions for Low-Voltage Power Circuit
Breakers Types DS ll and DSL ll
Supplemental Digitrip RMS and Optim Trip Units with Type DS ll
I .L . 8700C39 and DSL ll Low-Voltage AC Power Circuit Breakers
AD 32-870 Typical Time-Current Characteristic Curves for
Types DS ll and DSL ll Circuit Breakers
SC-5619 Instantaneous (I)
SC-5620 Long Delay and Short Delay (LS)
SC-5621 Ground (G)
1A33600 Connection Diagram for Type DS ll Circuit
Breakers
6.4 Type SPB Systems Pow-R
I .L . 29-801 lnstruction for the Systems Pow-R Breaker and
Drawout Mechanism
I .L . 29-849 Supplementary lnstructions for the Systems
Pow-R Breaker used with the Digitrip RMS Trip
Units
AD 29-863 Typical Time-Current Characteristic Curves for
Type SPB Systems Pow-R Breaker
SC-5623 lnstantaneous (I)
SC-5624 Long Delay and Short Delay (LS)
SC-5625 Ground (G)
I .S . 15545 SPB Master Connection Diagram