ComPass B 2.0

Directional short-circuit and earth fault indicator with high-precision monitoring

The ComPass B 2.0 is particularly suitable for use in those substations in a medium voltage network that feature a remote control connection. In addition to the short-circuit and earth fault function, ComPass B 2.0 supplies the collected measured values of current, voltage and power from the station for transmission to the control room. The PT-100 sensor measures the temperature, for example of the transformer or the transformer station. For all measured values limits can be defined, which can also be transmitted to the control room.

The voltage coupling/measurement is done via the capacitive VDS system and/or via resistive (ohmic) voltage sensors. With the simultaneous measurement, the voltage measurement of the VDS system can be automatically calibrated with the resistive voltage measurement. Up to four ComPass B can be connected to one set of resistive voltage sensors.

Equipment set includes:

1 display unit
3 single-phase current sensors
Voltage coupling

Clear fault indication and reading on-site: 2 directional arrow LEDs (A, B) and high contrast OLED display
High-precision current and voltage measurement (0.5 %)
Monitoring of the parameters voltage (V), current (I), load flow direction (A↑ or B↓), power factor (cos φ), power (P, Q, S), energy (E), temperature (T) and frequency (f)
Suitable for all types of networks/neutral point treatments
Earth fault detection with 6 different earth fault detection methods, also in combination
Voltage monitoring with connection to capacitive and resistive (ohmic) sensors in one indicator
Limit monitoring: V, I, P, Q, T
ComPass Explorer Software: Commissioning and parameterisation via front accessible USB port

Your advantage

Immediate detection of fault direction
Immediate detection of limit violations
Measured values available for SCADA and on site
Automatic self-calibration of the capacitive voltage inputs, optionally with temperature compensation

Technical specifications

Earth fault detection methods	Permanent, earth short-circuit, transient, cos ɸ, sind ɸ, pulse detection
Low-impedance/short-term low-impedance earthed	---
Isolated earthed	---
Resonant earthed	---
Indication	LED status display; OLED display, directional arrows red/green
Measured values	Phase currents I1, I2, I3, IE with phase angle Phase-to-earth voltage V1, V2, V3, VNE and phase-to-phase voltage V12, V23, V31, VNE with phase angle Load flow direction A↑ or B↓ P, Q, S and cos φ (power factor) (P1,2,3, Q 1,2,3, S 1,2,3, cos φ 1,2,3 via RS485) Amount of active energy, separate for load flow direction A↑ or B↓, additionally per phase Operating current I1,2,3, S, P, Q, V12, V23, V31, Ø-vaule adjustable (1 – 60 min), I max. 24 h / 7 days / 365 days, maximum demand indicator Imax. LR , V12max LR, V23max LR, V31max LR, Smax LR, Pmax LR, Qmax LR, Tmin LR, Tmax LR (LR = last reset) Frequency f Temperature T
Short-circuit trip current	10 - 2,000 A, self adjustment (200 - 2,000 A)
Response delay short-circuit	20 ms - 60 s
Earth short-circuit trip current	10 - 1,000 A
Response delay earth short-circuit	40 ms - 60 s
Trip current transient method	10 - 500 A
Trip current active current cos ɸ	1 - 200 A
Response delay active current cos ɸ	40 ms - 60 s
Trip current reactive current sin ɸ	1 - 200 A
Response delay reactive current sin ɸ	40 ms - 60 s
Trip current permanent earth fault	1 - 100 %
Response delay permanent earth fault	40 ms - 60 s
Trip current pulse detection	1 - 200 A
Limit overload current	5 - 1,500 A
Limit overvoltage	100 - 200 %
Response delay overload current	40 ms - 60 s
Response delay overvoltage	40 ms - 60 s
Limit undervoltage	1 - 100 %
Response delay undervoltage	40 ms - 60 s
Limit active power	1 - 30,000 kW
Response delay active power	40 ms - 60 s
Trip current reactive power	1 - 30,000 kW
Response delay reactive power	40 ms - 60 s
Limit temperature	-40 to +85 °C
Phase currents	±0,5 % (0 - 630 A) ±3 % (630 - 1,500 A) ±5 % (1,500 - 2,000 A) closed sensor type
Voltages	Up to 0.5 % in the range of 80 - 120 %/Vnom (resistive)
Relay contacts	4
Remote contact	Potential-free permanent or momentary contact (>1 s), bistable, NC or NO Contact capacity: 230 V AC/1 A/62.5 VA max. 220 V DC/1 A/60 W max.
RS485/Modbus-RTU	---
USB port	---
Binary inputs	2
Ethernet interface	-
Resistive	---
Capacitive	---
Manual	---
Remote	---
Software via USB	---
Manual reset	---
Remote reset	---
Automatic time reset	---
Reset via interface	---
Reset on current restoration	---
Reset on voltage restoration	---
Reset on restoration of auxiliary supply	---
Reset via Explorer Software	---
Internal power supply	Long-life lithium cell, active flashing time >1000 h, >1000 display activations, shelf life ≥20 years
External auxiliary supply	24 - 230 V AC/DC
CT powered	-
Housing	Polycarbonate, IP50
Temperature range	-30 to +70 °C
Cable diameter	-