VAMP 121
Arc protection unit
User manual
VAMP 121 Arc protection unit
User manual
VAMP Ltd
2
VAMP 24h support phone : +358 (0)20 753 3264
VM121.EN01
VAMP Ltd Arc protection unit
User manual
VAMP 121
Table of content
1. General...................................................................................4
1.1. Arc protection unit VAMP 121...........................................4
1.2. Unit features.........................................................................4
2. Unit configuration...................................................................5
3. Sensors ....................................................................................7
3.1. Arc sensor VA 1 DA.............................................................7
3.2. Portable arc sensor VA 1 DP..............................................8
4. Functions.................................................................................9
5. Change of DIP-switch in VAMP 121....................................10
6. Switchgear application.......................................................11
7. Connections .........................................................................12
7.1. Outputs.............................................................................. 12
7.2. Inputs.................................................................................. 13
7.3. Auxiliary voltage............................................................... 14
8. Technical data .....................................................................15
Auxiliary voltage................................................................. 15
Tripping contacts ............................................................... 15
BIO Input / Output.............................................................. 15
Disturbance tests................................................................ 15
Voltage tests....................................................................... 16
Mechanical tests................................................................ 16
Environmental conditions ................................................. 16
External supply unit (MINI PS)............................................ 16
Alarm relay (DEK-REL-G24/21).......................................... 16
9. Dimensions............................................................................17
9.1. VAMP 121 .......................................................................... 17
9.2. External supply unit / Alarm relay .................................. 17
9.3. VA 1 DA arc sensor .......................................................... 18
9.4. M
ounting plates for VA 1 DA.......................................... 18
10. Order information.................................................................19
11. Reference information.........................................................20
VM121.EN011 VAMP 24h support phone : +358 (0)20 753 3264
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VAMP 121 Arc protection unit
User manual
VAMP Ltd
4
VAMP 24h support phone : +358 (0)20 753 3264
VM121.EN01
1. General
This manual describes the general functions of the arc
protection unit, it also includes mounting and configuration
instructions.
1.1. Arc protection unit VAMP 121
Figure 1.1-1. Arc protection unit VAMP 121
1.2. Unit features
VAMP 121 is a state of the art arc protection unit for electrical
power distribution systems.
By using VAMP 121 in switchgears considerable safety
improvements are obtained in the form of minimized injury and
damage in case of an arc fault.
VAMP 121 is a “stand alone” system, which gives a compact
solution when the application doesn’t require overcurrent
measurement. It is possible to connect 10 arc sensors, of the
type VA 1 DA, to the VAMP 121 unit.
VAMP Ltd Arc protection unit
User manual
VAMP 121
2. Unit configuration
The unit is configured using the dipswitches:
Dipswitches 1-5 (see Figure 2-1):
The Clear switch (nr 1 in Figure 2-1) is moved to the ON
position to reset unit activation- and trip-information, as
well as the trip relay, if latched. This switch is also used to
clear any fault messages. When the system is in use, this
switch must always be in the OFF position.
The Latch switch (nr 2 in Figure 2-1) enables latching of the
trip relay. When it is in ON position the latching function is
activated.
The Operate/ Install switch (nr 3 in Figure 2-1) is used to
read in the configuration (number of connected arc sensors)
to the unit eeprom-memory. When the desired number of
sensors has been connected, the switch is briefly moved to
ON position, to allow the unit register the number of
connected arc sensors. When the system is in use, the
switch must be in the Operate (OFF) position for the selfsupervision to function.
The Double switch (nr 4 in Figure 2-1) enables the choice of
trip criteria’s. In the “ON” position, two sensor inputs must
be activated at the same time for the unit to trip. In the
OFF position (normal) the unit trips if any of the sensor
inputs become active.
The Block switch (nr 5 in Figure 2-1) temporarily blocks the
trip relay (in the ON position) when e.g. testing the unit.
The switch must always be in OFF position when the
system is in use. As long as the switch is in ON position the
System Fault alarm is activated. The same function is
attained by activating the binary input on connector X2-7,
X2-8 (see also inputs). When the blocking function is
activated, the error led is lit and the SF-relay activated.
VM121.EN011 VAMP 24h support phone : +358 (0)20 753 3264
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VAMP 121 Arc protection unit
User manual
VAMP Ltd
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VAMP 24h support phone : +358 (0)20 753 3264
VM121.EN01
Figure 2-1. VAMP 121 dipswitch operations
Dipswitches 6-8 (Code switches, see Figure 2-1):
When switch nr 8 is OFF, the binary input (X2:7(-), X2:8(+))
has a blocking function, see switch nr 5. In the ON position
the binary input has a reset function, see switch nr 1.
Switches nr 7 and 6 have the following effect on the binary
output.
SW7 off, SW6 off Alarm for internal fault (active when
the unit is OK).
SW7 on, SW6 off Trip alarm (active when tripping)
SW7 off, SW6 on Combined internal fault and trip alarm
(active either at internal fault or at
tripping).
Figure 2-2. Alarm relay function table.
VAMP Ltd Arc protection unit
User manual
VAMP 121
3. Sensors
3.1. Arc sensor VA 1 DA
The arc sensor is a light sensitive element, which is activated
by strong light. Arc sensors should be mounted in the switchgear cubicles, in such a way that the light sensitive part (see
Figure 3.1-2) covers the protected area as completely as
possible.
Figure 3.1-1. Arc sensor VA 1 DA
40 30 20 10 0
50
60
70
80
90
100
120
130
140
100%
80
60
40
20
Figure 3.1-2. The sensitivity of the VA1DA arc sensor to light from different
directions.
In open spaces, such as the bus bar section, arc sensors should
be mounted max. four meters apart.
The light sensitivity of the arc sensor is 8000 LUX
The arc sensor can be mounted from the outside on partition
wall of the switchgear. The active part of the sensor is mounted
in a 10 mm hole, to the area in the switchgear that should be
protected, and fastened with a 4 mm self-tapping screw (see
Figure 3.1-3).
VM121.EN011 VAMP 24h support phone : +358 (0)20 753 3264
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