VAMP 220 - Page 28

VAMP 220 / 220R Arc protection system
User manual
VAMP Ltd
28
Vamp 24h support phone : +358 (0)40 573 6316
VM220.EN004
TRIP1
TRIP2
Alarm (L>)
1
3
5
L1
L2
L3
u
X3-16 Ib>
X3-17 BIO GND
X3-1
X3-2
Alarm(SF)
PE
3
X1-17
X1-19
X1-15
X1-16
+
_
X3-5
X3-6
L>
L>
2
4
6
Auxiliary supply
COM 1
Serial communication
and auxiliary supply
to the slave unit
COM 2
Serial communication
and auxiliary supply
to the slave unit
Self-supervision
alarm
Trip signal (5ms) /
Temperature alarm
24V outputs
to the slave units
Trip signal (5ms)
X5
X3-5...10
X1
X1
X1
TRIP3
TRIP4
X1-7
X1-8
X1-9
X1-10
X1-11
X1-12
X1-13
X1-14
Trip signal (5ms)
Trip signal (5ms)
/ CBFP
X1-18
Trip Alarm
OC stage
X3-15 Ia>
X3-14 Lc>
X3-12 La>
ARC stage
X3-13
BIO GNDX3-18
Lb> (dependent on I>)
Figure 5.3.7-1 Block diagram of master unit VAMP 220.
Earth Fault protection with VAM P220R
VAMP 220R
L1
L2/Io
L3
P2
P1
100/1 to 2000/1
CTs
- Phase setting 1.3 x In
- E/F setting 5% of primary ratio
=> if CT ratio 2000/1 primary setting = 100A
=> setting = 0.33 x In
L1
L2
L3
300/1
Maximum earth fault
current 300...650 A
Earth Compensator
Figure 5.3.7-2 Scheme for VAMP220R with E/F measurement