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Superior rms Sensing for Accuracy and Reliability
Digitrip OPTIM Trip Units utilize the proprietary SuRE Plus™ Chip microprocessor that provides unparalleled accuracy for protection, system diagnostics, monitoring, and communications.
OPTIM technology builds upon the original, front adjustable Digitrip RMS Trip Units to provide high reliability and increased functionality to meet the sophisticated demands of today's and tomor-row's electrical distribution systems.
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Programming and Monitoring Methods
Programming and trip unit monitoring can be completed at the trip unit with the hand held OPTIMizer while the Breaker Interface Module provides programming and monitoring at the assembly. With
IMPACC Communications, programming and monitoring can be accomplish-ed remotely from a personal computer.
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Protection and Coordination
Programmability Increases Protection and Coordination Capabilities
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Protection and Coordination |
Provides Data to Improve Power Systems Reliability
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Virtual Infinite Settings
Setting increments are increased by a factor of 10 as compared with conventional front adjustable trip units.
Improved Accuracy and Reliability
Time-current pick-up setpoints are shown in actual amperes, not multiples. True rms sensing prevents nuisance trips caused by non-sinusoidal waveforms.
System Security
Programmable password protection
Thermal Memory
Selectable powered and unpowered thermal memory prevents cumulative overheating due to repeated overloads, eliminating nuisance trips.
Selectable Sure Start Discriminator
Provides protection when closing a breaker on startup if no instantaneous setting has been programmed.
I4t Curve Shaping
This long delay time slope provides better coordination with fuses and transformer damage curves.
Short Delay and Ground Delay Zone Selective Interlocking
Provides positive selectivity on ground fault and short time protection without time delays…down to a 70 ampere breaker.
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Energy Monitoring
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Energy Monitoring |
Provides Data to Help Control Energy Costs
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Extensive Monitoring Capabilities and Early Warning Alarms Keep the System Operating and Productive
Programmable High Load Phase and Neutral Alarm and Ground Fault Alarm
Alert the user to an impending trip condition without tripping the breaker. Monitored locally at the breaker or remotely.
Field Testing
Trip or no trip testing can be done to verify performance and operation.
Trip Event Information
Four LEDs on the trip unit are complemented by trip event information stored in the OPTIM Trip Unit memory after a trip condition. This information can be used to develop reports which analyze patterns of system alarms, system loadings, power flow, peak demand, and kWh usage.
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Energy Management
Data You Can Use to Manage Energy Costs and Enhance Power Quality
Power and Energy Monitoring
of peak demand, present demand in kW, forward, reverse, and total energy in kWh.
Energy Alarming
such as 90% of peak demand exceeded.
Power Quality Monitoring
of THD and harmonic content (first through 27th) in phases A, B, C, neutral, and ground.
THD Alarming
to detect a change in power quality.
Power Factor Monitoring
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System Communications and Software
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Power Quality |
Provides Data to Reduce Downtime and Equipment Damage |
The Cutler-Hammer IMPACC monitoring, protection, and control communications system is the most highly reliable and cost effective communications system available. From a master control PC, either on-site or off-site, the plant operator, facilities engineer, and/or maintenance personnel can monitor and/or control the entire power distribution system. Information can be made available to other PCs at different locations within a facility.
All OPTIM programming, configuration, advance warning, diagnostic, monitoring, and control capabilities can be accessed from a central PC using IMPACC Series III software.
Additional IMPACC software packages include:
- Circuit Breaker Configuration and Trip Curve Package
that displays, configures, and coordinates time-current protection curves for OPTIM Trip Units and other devices that can be included on an IMPACC System. Multiple trip curves can be displayed on the screen to show how these devices coordinate.
- Energy Billing Software
(stand alone application specific package) provides capabilities to determine energy usage data by individual departments or tenants in a facility… and then creates "electric bills."
- Waveform Capture and Harmonic Display Software
performs a waveform capture of phase currents A, B, and C as well as neutral and ground. In addition, total harmonic distortion (THD) and individual harmonic currents of phase currents A, B, C, neutral, and ground can be displayed.
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