ABB REG316 4 Series - Balanced Voltage

REG 316*4 1MRB520049-Uen / Rev. F ABB Switzerland Ltd
3-211
3.5.22. Balanced voltage (Voltage-Bal)
A. Application
Monitoring/comparison of two groups of single or three-phase
voltage inputs to detect voltage measurement errors.
B. Features
· comparison of the amplitudes of two groups of voltage inputs
(e.g. line 1and line 2)
· single or three-phase voltage measurement
· indication of group with the lower voltage
· evaluation of voltage balance per phase in the three-phase
mode with selection by OR gate for tripping
· adjustable delays for operation and reset
· insensitive to DC components
· insensitive to harmonics.
C. Inputs and outputs
I. Analogue inputs:
· voltage (2 sets of 1 or 3 inputs)
II. Binary inputs:
· blocking
III. Binary outputs:
· pick-up
· tripping
· line 1 trip (voltage input U
1
)
· line 2 trip (voltage input U
2
)
IV. Measurements:
Single-phase mode
· difference between voltage amplitudes (U
1
- U
2
)
Three-phase mode
· voltage amplitude difference for R phase (U
1R
- U
2R
)
· voltage amplitude difference for S phase (U
1S
- U
2S
)
· voltage amplitude difference for T phase (U
1T
- U
2T
).