 | Datasheet & Manual / (Static Trip III) Downloads Click on the Pre-sales Info section to your right |
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The trip units of the Static Trip III family are microprocessor-controlled, overcurrent protection devices for application with Siemens Type RL, low-voltage circuit breakers. The trip units include:
Static Trip III: This unit provides basic overcurrent protection
Static Trip IIIC: In addition to the basic protective functions, this unit offers communications and current metering functions.
Static Trip IIICP: In addition to the basic protective functions, this unit offers full power metering capability.
Static Trip IIICPX: In addition to the basic protective functions, this unit incorporates extended protective relaying.
These trip units can also be applied with other manufacturer’s circuit breakers.
Static Trip III Features:
• RMS current sensing |
• Universal mounting package (optional) |
• Six basic overcurrent configurations: |
| • Long Time/Instantaneous (RMS-TI-T) |
| • Long Time/Short Time (RMS-TS-TZ)t |
| • Long Time/Short Time/Instantaneous (RMS-TSI-TZ) |
| • Long Time/Instantaneous/Ground Fault (RMS-TIG-TZ) |
| • Long Time/Short Time/Ground Fault (RMS-TSG-TZ) |
| • Long Time/Short Time/Instantaneous/Ground Fault (RMS-TSIG-TZ) |
• A custom liquid crystal display (LCD) provides a visual indication of an overcurrent tripping action. Message retention is provided by capacitive stored energy. The displayed legends are: |
| • OVERLOAD: Long time delay tripping (phase)t |
| • SHORT CIRCUIT: Short time delay or instantaneous tripping (phase) |
| • GROUND FAULT: Ground fault delay tripping |
| • DISABLED: Watchdog circuit indicates protection microprocessor not functioning properly. |
• Static Trip IIIC and Static Trip IIICP trip units meter and communicate essential electrical power system parameters. |