VAMP 130
Overcurrent and earth-fault relay
Technical Description
VAMP Ltd
26
Vamp 24h support phone : +358 (0)40 573 6316
VM130.EN003
3.3.
Power transformer HV side overcurrent
and earth-fault protection
2
19
12
1
20
11
3
17
4
16
5
14
6
13
9
7
12
8
8
11
7
9
10
10
X1
X1
X2
IL3
1A
5A
I
0
VAMP 130
T1
T2
A1
A2
A3
IF
Protection function
3I>>>
L >
3I >
3I >>
~
IL1
1A/5 A
IL2
1A/5 A
1A/5 A
CBFP
DR
Measurement
functions
Phase currents,
residual current,
ILmax
Disturbance
Recorder
A
B
C
a
b
c
kuvax4
Figure 3.3-1 The VAMP 130 relay used for overcurrent and earth-fault
protection of the HV side of a power transformer.
