BUA1 Voltage and Voltage Balance Relay (BUA1110)
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Configuration
The relay BUA1 of the BASIC LINE measures amplitude and angle of three phase voltages. The angle of the phasors determine the phase sequence. Unbalance and phase loss are detected by the measurement of amplitude and angle.
The BUA1 is designed to be fastened onto a DIN-rail acc. to DIN EN 50022. (This is the case for all relays of the BASIC LINE.)
Settings
| Parameter | Range |
|---|---|
| ΔU | 5 … 15% Un |
| tΔU | 0 … 10 s |
| U< | 70% … 110% Un |
| U> | 90% … 130% Un |
Self-powered – No aux. Voltage needed
Easy DIN rail mounting
Sealable plastic covers
Very easy settings via buttons at the front
Fault indication via LED and output relays
Operational from −25°C to 70°C
Under-/Overvoltage supervision
Voltage unbalance supervision
Phase failure supervision
Phase sequence supervision
Voltage hysteresis 2%
AC and DC Voltage based supervision devices.
The Basic Line devices are self-powered – Measuring voltage also supplies the device.
The Basic Line scope covers voltage and frequency limits as well as ROCOF and vector surge.