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VAMP Ltd
Arc protection system
Technical description
VAMP 221
VM221.EN013
VAMP 24h Technical Support: +358 (0)20 753 3264
9
CBFP setting parameters:
VAMP 221
Parameter
Parameter
Parameter
Parameter
Value
Value
Value
Value
Unit
Unit
Unit
Unit Default
Default
Default
Default Description
Description
Description
Description
SW1-3
ON/OFF
OFF
CBFP options:
OFF: CBFP not in use
ON: CBFP in use
SW1-4
ON/OFF
OFF
CBFP delay time options:
OFF: delay time 100 ms
ON: delay time 150 ms
2.2.
Measurements
The central unit VAMP 221 has a three-phase current
measuring function that can be used to measure either three
phase currents or two phase currents and a summation
current. Current measuring is indicated on the display of the
central unit.
The current I/O unit VAM 4C has a current measuring function
but no indication. The unit only gives an indication when the
measured current exceeds the current limit setting.
2.3.
Output relay functions
The central unit VAMP 221 has four trip relays, which can be
controlled as two tripping groups (two contacts in each group).
One contact in each group can be used to trip the CBFP stage.
The central unit also has a general contact for arc fault trip
alarms and two contacts for internal fault alarms.
The tripping groups are controlled using the trip relay matrix.
Latch
L> & I>
CBFP
100 ms
Relay Matrix
Master
1A
5A
non Latch
L>
Fast
150 ms
Slave
Relay Matrix
DIP sw
7 6 5
0
0 0
0
0
1
1 1
0
1 0 0
1 0 1
1 1 0
1 1 1
1
0 0
Zone
x
1 2 3 4
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Trip Group
1 2
x x
x x
x x
x x
x
x
x
x
x
x
x
x
x x
x x
x x
x x
1
2
3
4
5
6
7
8
OFF ON
VAMP221_dips
Figure 2.3-1 VAMP 221 relay matrix