VAMP 121 Manuale utente
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. Mounting plates for VA 1 DA.......................................... 18
10.Order information.................................................................19
11.Reference information.........................................................20
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VAMP 121 Arc protection unit
User manual VAMP Ltd
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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 self-
supervision 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.
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VAMP 121 Arc protection unit
User manual VAMP Ltd
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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 switch-
gear 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).
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VAMP 121 Arc protection unit
User manual VAMP Ltd
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The arc sensor can alternatively be mounted completely in the
protected area with the help of a mounting plate VYX 01 (Z-
shaped) or VYX 02 (L-shaped). (See Figure 9.4-1)
10mm
Fastening screw 4 x 15
Active part of the sensor
Anchoring
Sensor cable
Figure 3.1-3. Arc sensor mounting picture.
3.2. Portable arc sensor VA 1 DP
A portable arc sensor (VA1DP) can temporarily be connected to
the VAMP121 unit, via a plug-in connector (sensor).
It is used to further enhance the safety during maintenance on
an operational power distribution system.
The sensor should be located close to the place where the
maintenance is done. It can, for instance, be attached to the
breast pocket of the service man’s shirt or suit.
The function of the portable arc sensor equals that of the fix-
mounted arc sensors (VA1 DA).
VAMP
A
R
C
P
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o
t
e
c
t
i
n
o
S
y
s
VA 1 DP
Figure 3.2-1. Portable arc sensor VA 1 DP
NOTE! To avoid false activations, the portable sensor must be
disconnected from the unit immediately after use.
VAMP Ltd Arc protection unit
User manual VAMP 121
4. Functions
VAMP 121 includes an extensive self-supervision. The self-
supervision includes internal functions as well as all arc
sensors.
Figure 4-1. Self-supervision block diagram
When an internal fault occurs the self-supervision relay is
activated and the ERROR-led is lit.
The function at the binary in- and output can be chosen with
the dip switches 8, 7 and 6 (CODE). See chapter 2on page 4.
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VAMP 121 Arc protection unit
User manual VAMP Ltd
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5. Change of DIP-switch in VAMP
121
In VAMP 121 unit delivered before 11 March 2005, the DIP-
switch is in an order opposite to the order shown in the photos
in this manual.
Units delivered before this date can be identified from the
following external details.
1. The VAMP 121 unit has a serial number smaller than
10,000.
2. The numbering of the VAMP 121 unit terminal block is
not embossed on the front panel.
3. The DIP-switch is in reverse order.
On request we can deliver following stickers which are
recommended to be to be attached on the VAMP 121 units
manufactured before 11th March 2005.
Figure 5-1 Stickers for VAMP 121 which is manufactured before 11
th
March
2005
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