VAMP 135
Over-, under-, residual voltage and
frequency relay
Technical description
VAMP Ltd
16
VAMP 24h support phone : +358 (0)20 753 3264
VM135.EN008
2.4.
Measurement functions of the relay
Measured values
Line voltages U
12
, U
23
, U
31
and phase voltages U
L1
, U
L2
, U
L3
Measuring range
0 - 265 V
Primary voltages
Inaccuracy
±
1V
Residual voltage U
0
Measuring range
0 - 100%
VTsec or VT0sec
Inaccuracy
±
0.5 %
Frequency f
Measuring range
16 - 65 Hz
Inaccuracy
±
10 mHz
Calculated values
From the measured values the relay calculates the following:
•
U2/Un, Uline
2.5.
Output relay and blocking functions
In the VAMP 135 relay all start and trip signals of the
protection stages can be freely routed to the output relays and
operation indicators according to the requirements of the
application. The functions can also be blocked and for this
purpose both internal relay signals and external control signals
can be used. Figure 2.5-1 shows the operating principle of the
grouping and blocking matrix.
Figure 2.5-1 Operating principle of the grouping and blocking matrices.