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Circuit Breaker
Monitoring Capabilities
Breaker State (Open/Closed)
Breaker Timing: Opening & Closing Time (Latch Time); Opening & Closing Travel Time; Arc Time; Interrupting Time
Opening & Closing Travel Velocity
Operations Coun: Fault-Interrupt Count; Non-Fault-Interrupt Count
Days Since Last Operation
Trip & Close Coil Circuit Integrity
Charging Motor Current Draw & Run Time
Contact Wear & Restrike Detection
Circuit Breaker
Monitoring Reporting
2-Hour Current Log (5000 Records – FIFO): Min., Max., & Average Current
Event History (5000 Records – FIFO): Opening Coil (1 or 2); Timing Measurements; Opening & Closing; Velocity; Peak Fault Current; Alarm Status for Each Operation; Contact Wear for Each Operation; Accumulated Contact Wear
SF6 Gas Monitoring
Capabilities
Gas Density
Gas Pressure
Gas Temperature
Leakage Trend & Confidence Level
Forecasts Days until Low Gas Alarm
SF6 Gas Monitoring
Reporting
Daily Average (750 Records – FIFO): Pressure, density, temperature & SF6
mass
2-Hour History Log (5000 Records – FIFO): Pressure, density, temperature
Sensor Types
Supported
SF6 Gas Density, Temperature, Pressure
SF6 Gas Dew Point
Generic AC/DC Voltage & Current
Generic (Hydraulic, Air) Pressure
Generic Temperature
Tank Heaters (UPSM-241)
Analog: 4-20mA (Loop-Powered)
Digital: Frequency/Pulse-Width Modulated
Environmental:
Operating Temperature: -40 to 65° C
Storage Temperature: -40 to 65° C
Humidity: 0 to 95% Non-condensing
Communications:
RS-485 Full/Half Duplex
Ethernet
Fiber-optic (OM3D-F Model Only)
Relay Output: Dry Contact; 1 ea. Form C
Relay Contact
Rating:
N.O: 5 Amps @ 250 VAC or 3 Amps @30 VDC
N.C: 2 Amps @ 250 VAC or 1 Amp @ 30 VDC
Relay Contact Fuses: 3.15 A Slow-Blow
Power Supply Input Voltage: 110-250 VDC / 90-264 VAC, 50
/ 60 Hz
Power Consumption: 60VA Maximum
Power Supply Input Fuses: 3.15 A Slow-Blow
Aux Input Voltage: 0 to 48 - 250 VDC
Aux Input Fuses: ¼ A Fast-Blow
Aux Input Impedance: 540K Ohms
CT Pickup Coil Input Signal: 0 to 5 VAC
Input Sampling Rate: 32 Samples per line cycle
Sensor Signal:
Analog: 4 to 20 mA
Digital: Frequency & Pulse-Width Modulated
Sensor Power: 20 VDC @ 25mA Max
Analog Sensor Accuracy: +/-1% of Full-Scale Max, +/-0.5%
Typ.
Dimensions: 280 mm L x 70 mm W x 143 mm H
