Cutler-Hammer Digitrip OPTIM 1050, Instruction For Operation And Maintenance, Page: 14 / 66

I.B. 29C891B
Page 7
Effective 11/98
Communications
Trip units that are capable of two way communication
operate via a network twisted pair for remote monitoring
and control. The circuit breaker, through the trip unit, is
able to respond to open and close commands via the
communication network. To close the breaker, a motor
operator accessory is required. Refer to Table
A.1 in
Appendix A for motor operator instructional references.
Testing
An integral testing capability is part of all OPTIM Trip
Systems. The breaker can be tested in either the “Trip”
or “No Trip” Test Mode. System level testing is carried
out by using a Hand Held Programmer, a Breaker
Interface Module, or a remote computer. Bench level
testing requires the Hand Held Programmer only. Trip
tests with the Hand Held Programmer require an auxil-
iary power module to supply the necessary power. Trip
units continue to provide protection during test opera-
tions.
Data Access
All programming, information display and general trip
unit access is accomplished through the use of one or
more of the following:
• Hand Held Programmer
• Breaker Interface Module
➀
• Remote computer
➀
1-4.2 ADDITIONAL FEATURES OF DIGITRIP OPTIM
1050 TRIP UNITS
The Digitrip OPTIM 1050 Trip Unit provides all the basic
system protection features outlined in Paragraph 1-4.1.
In addition, Digitrip OPTIM 1050 Trip Units can provide
data on power quality (current harmonics) and permit
energy monitoring.
Energy Monitoring
• Peak demand (kW)
• Present demand (kW)
• Forward energy (kWh)
• Reverse energy (kWh)
• Total energy (kWh)
• Power factor
Power Quality
• Percentage harmonic content
• Total harmonic distortion (THD)
• Digitized waveforms (Remote computer only)
➀
OPTIM 550 trip units must have field IMPACC kit
installed for use with BIM or remote computer