DE-ENERGIZE THE CIRCUIT, “REMOVE”, “DISCON-
NECT” OR MOVE THE CIRCUIT BREAKER TO AN
APPROPRIATE “TEST” POSITION BEFORE PER-
FORMING MAINTENANCE OR TESTS.
DO NOT ATTEMPT TO PERFORM DIELECTRIC (OR
HIGH POT OR HIGH VOLTAGE) WITHSTAND TESTS
ON THE CIRCUIT BREAKER WHILE THE VOLTAGE
DISCONNECT PLUG TO THE POTENTIAL TRANS-
FORMER MODULE IS INSTALLED FOR R-FRAME,
SPB AND DSII/DSLII BREAKERS. FOR L AND N-
FRAME BREAKERS, REMOVE THE FUSES FROM
THE PTM BEFORE HIPOT TESTING (FIGURE 2-14).
POTENTIAL TRANSFORMER MODULE AND/OR
TRIP UNIT DAMAGE OR FAILURE CAN RESULT
FROM ENERGIZING THE POTENTIAL TRANS-
FORMER MODULE AT MORE THAN 600 VOLTS.
VERIFY THAT NO VOLTAGE IS PRESENT ON THE
CIRCUIT BREAKER BEFORE REMOVING THE
VOLTAGE DISCONNECT PLUG OR FUSES.
REMOVE THE VOLTAGE DISCONNECT PLUG OR
FUSES TO ISOLATE THE POTENTIAL TRANS-
FORMER MODULE BEFORE PERFORMING ANY
VOLTAGE TESTS ON THE CIRCUIT BREAKER.
REINSTALL THE PLUG OR FUSES ONLY AFTER
ALL VOLTAGE TESTS HAVE BEEN COMPLETED
AND CONFIRM THAT NO VOLTAGE IS PRESENT ON
THE CIRCUIT BREAKER.
I.B. 29C891B
Page 36
Effective 11/98
Figure 3-18 Typical Waveform and Harmonic Display
ucts with remote personal computers into a comprehen-
sive information and control communications network.
The integral communications capability of OPTIM Trip
Units permits the receiving device to be the following:
• Breaker Interface Module only
• Remote Master Computer only
• Remote Master Computer with a Breaker Interface
Module
Refer to paragraph 1-3 and Figure
1-9
for additional infor-
mation on sub-network and network communications. In
addition, Section 3 of Instruction Book 29C890 (Overview of
Digitrip OPTIM Trip Unit System) presents more information
on communications with a remote master computer. Refer
to paragraph 4-6 of Instruction Book 29C893 (Breaker
Interface Module) for additional information concerning
communications with the Breaker Interface Module.
3-4.1 IMPACC
All OPTIM Trip Unit programming, configuration, advance
warning, diagnostic, monitoring, and control capabilities
can be accessed from a remote master computer using
IMPACC Series III software. Other software packages are
also available.
Custom Billing Software, a stand alone application specific
software package, provides the capabilities to determine
energy usage data by individually monitored departments
in a facility. It can then create a bill based on this data.
Waveform and harmonic display software is capable of
performing a waveform capture of phase currents as
well as ground or neutral (Figure
3-18
). In addition, total
harmonic distortion (THD) and individual harmonic con-
tents can be displayed.
Refer to Section 3 of Instruction Book 29C890 (Over-
view of Digitrip OPTIM Trip Unit System) for more
detailed information on communications with IMPACC.
3-5 TESTING
DO NOT ATTEMPT TO INSTALL, TEST OR PER-
FORM MAINTENANCE ON EQUIPMENT WHILE IT IS
ENERGIZED. DEATH OR SEVERE PERSONAL
INJURY CAN RESULT FROM CONTACT WITH
ENERGIZED EQUIPMENT.
WARNING
Summary of Contents for Digitrip OPTIM 1050
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