VAMP 121 User manual

VAMP 121/VAMP 121D
Arc flash protection unit
Publication version: V121/EN M/A017
User manual

2
V121/EN M/A017

1 General
1.1 Arc protection unit VAMP
121(D)
V121/EN M/A017
3
Table of contents
1. General....................................................................................4
1.1. Arc protection unit VAMP 121(D)........................................4
2. Unit configuration ..................................................................7
3. Sensors...................................................................................9
3.1. Arc sensor VA 1 DA............................................................9
3.2. Portable arc sensor VA 1 DP............................................10
4. Functions..............................................................................11
5. Switchgear application ........................................................12
6. Connection examples ..........................................................13
6.1. Outputs.............................................................................14
6.2. Inputs................................................................................15
6.3. Auxiliary voltage................................................................16
7. Technical data ......................................................................17
Auxiliary voltage..................................................................17
Tripping contacts.................................................................17
BIO Input / Output...............................................................17
Disturbance tests................................................................17
Voltage tests.......................................................................18
Mechanical tests.................................................................18
Environmental conditions....................................................18
External supply unit.............................................................18
Alarm relay..........................................................................18
8. Dimensions...........................................................................19
8.1. VAMP 121.........................................................................19
8.2. VAMP 121D......................................................................20
8.3. External supply unit / Alarm relay......................................21
8.4. VA 1 DA arc sensor ..........................................................21
8.5. Mounting plates for VA 1 DA.............................................22
9. Order information.................................................................23

1.1 Arc protection unit VAMP
121(D)
1 General
4
V121/EN M/A017
1. General
This manual describes the general functions of the arc protection
unit, it also includes mounting and configuration instructions.
By using VAMP 121(D) in switchgears considerable safety
improvements are obtained in the form of minimized injury and
damage in case of an arc fault.
VAMP 121(D) 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(D) unit.
The VAMP 121(D) arc protection unit has default settings when
delivered from the factory. The unit must be configured as
described later in this document.
1.1. Arc protection unit VAMP 121(D)
Figure 1.1-1 Arc protection unit VAMP 121

1 General
1.1 Arc protection unit VAMP
121(D)
V121/EN M/A017
5
Figure 1.1-2 Arc protection unit VAMP 121D

1.1 Arc protection unit VAMP
121(D)
1 General
6
V121/EN M/A017
1. Connection for portable arc sensor (VA 1 DP)
2. Programming switches
3. POWER indicator light, indicates that the supply voltages of
each component are in order.
4. INST/BLOCK indicator light, lit when the unit is in a
installation or blocked mode.
5. ERROR indicator light, indicates an internal fault detected
by the component’s self-diagnostics. Such faults include
faulty arc sensor or changes in the amount of sensors.
6. LED lights indicating sensor activation
7. Terminal block for ten arc sensors
8. Portable arc sensor VA 1 DP connected and operational
9. Portable arc sensor activated
10.I/O unit trip relays activated
11.Terminal block for output relay
12. Text pocket for sensor specific labels (VAM 121D only)

2 Unit configuration
V121/EN M/A017
7
2. Unit configuration
During the configuration stage user has to determine the VAMP
121(D) functionality.
The amount of used arc sensors is configured by moving the
install dipswitches to “ON” position.
During the configuration stage the user must configure all the
following dipswitches.
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) if
switch 8 is “OFF”. When the blocking function is activated, the
error led is lit and the SF-relay activated.

2 Unit configuration
8
V121/EN M/A017
Figure 2-1. VAMP 121(D) 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).
SW 7
SW 6
Alarm relay
function
No FAULT
FAULT
No TRIP
TRIP
″off″
″off″
SF alarm (IRF)
B
A
-
-
″on″
″off″
Trip alarm
-
-
A
B
″off″
″on″
SF+Trip alarm
A
B
A
B
″on″
″on″
-
-
-
-
-
Figure 2-2. Alarm relay function table.

3 Sensors
3.1 Arc sensor VA 1 DA
V121/EN M/A017
9
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
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).

3.2 Portable arc sensor VA 1 DP
3 Sensors
10
V121/EN M/A017
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 8.5-1).
Active part of the sensor Anchoring Fastening screw 4x15
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(D) 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).
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.

4 Functions
V121/EN M/A017
11
4. Functions
VAMP 121(D) 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 1 on page 3.

5 Switchgear application
12
V121/EN M/A017
5. Switchgear application
Every compartment is equipped with an arc sensor. Up to ten
sensors can be connected to the VAMP 121(D) unit. The trip relay
is electromechanical and can be connected directly to control the
circuit-breaker (see specifications).
Figure 5-1. Switchgear application example

6 Connection examples
V121/EN M/A017
13
6. Connection examples
Figure 6-1. Example of VAMP 121 system components

6.1 Outputs
6 Connection examples
14
V121/EN M/A017
6.1. Outputs
The VAMP 121(D) unit has an integrated relay output (X2-15,X2-
16) for tripping of the circuit-breaker.
Furthermore, one binary output is available (+24V dc) X2-9 (-) X2-
10(+), which becomes inactive (0V) on internal fault (SF) and / or
on tripping (configurable). This output can control an external
relay. See Figure 6.1-1.
Figure 6.1-1Output relay connection

6 Connection examples
6.2 Inputs
V121/EN M/A017
15
6.2. Inputs
VAMP 121(D) has 10 arc sensor inputs X1:1-20, and one
connection for a portable arc sensor (VA 1 DP). All these inputs
have continuous self-supervision.
Furthermore, one binary input is available for blocking of the
output relay e.g. when testing the unit. The input can also be
configured to function as a resetting input (see chapter 1). The
blocking / resetting function is activated by connecting 24V dc to
the input X2:7 (-), X2:8 (+). The auxiliary voltage can be used. See
Figure 6.2-1.
When the blocking function is activated, the SF-alarm activates as
well.
Blocking function operation after trip:
When blocking function is activated, the latched trip output is
released. The LEDs of trip status and sensor channel activation
stay on until blocking function is deactivated. This means that
blocking function operates also as clearing function which returns
the device to normal operating status.
Figure 6.2-1. Binary input

6.3 Auxiliary voltage
6 Connection examples
16
V121/EN M/A017
6.3. Auxiliary voltage
The auxiliary voltage +24 V dc is supplied from an external voltage
module. See Figure 6.3-1.
The voltage module can be supplied with 120 –230V ac or 90 –
250V dc. The output (+24V dc) on the voltage module MINI-PS is
connected directly to the terminals X2-1 (+) and X2-2 (-) on VAMP
121(D). If the auxiliary voltage in the switchgear is 24V dc it can be
directly connected to the terminals X2-1 (+) and X2-2 (-) on VAMP
121(D).
Figure 6.3-1. Auxiliary voltage supply

7 Technical data
V121/EN M/A017
17
7. Technical data
Auxiliary voltage
UAUX
24V dc from the MINI-PS
In (stby)
30mA
IsensAct
20mA
Iarc
120mA + (IsensAct x n);
n = number of active sensors
Tripping contacts
Number
1
Rated voltage
250V ac/dc
Continuous carry
5A
Make and carry for 0.5s
30A
Make and carry for 3s
15A
Breaking capacity DC, when time constant
L/R=40ms
50W
Contact material
AgCdO2
Operating time
9ms
BIO Input / Output
Rated voltage
+24V dc
Rated current / output
20mA (max)
Rated current / input
5 mA
Number of inputs
1
Number of outputs
1
Disturbance tests
EMC test
CE approved and tested according to EN
50081-2, EN 50082-2
Emission
- Conducted (EN 55011 class A)
0.15 –30 MHz
- Emitted (EN 55011 class A)
30 –1 000 MHz
Immunity
- Static discharge (ESD) (According to
IEC244-22-2 and EN61000-4-2, class III)
Air discharge 8 kV
Contact discharge 6 kV
- Fast transients (EFT) (According to
EN61000-4-4, class III and IEC801-4, level 4)
Power supply input 2kV, 5/50ns
other inputs 2 kV, 5/50ns
- Surge (According to EN61000-4-5 [09/96],
level 4)
Between wires 2 kV / 1.2/50µs
Between wire and earth 4 kV / 1.2/50µs
- RF electromagnetic field test (According to
EN 61000-4-3, class III)
f = 80 –1000 MHz 10V /m
- Conducted RF field (According to
EN 61000-4-6, class III)
f = 150 kHz –80 MHz 10V

7 Technical data
18
V121/EN M/A017
Voltage tests
Insulation test voltage acc- to IEC 60255-5
2 kV, 50Hz, 1min
Impulse test voltage acc- to IEC 60255-5
5 kV, 1.2/50us, 0.5J
Mechanical tests
Vibration test
2 –13.2 Hz ±3.5mm
13.2 –100Hz, ±1.0g
Shock/Bump test acc. to IEC 60255-21-2
20g, 1000 bumps/dir.
Environmental conditions
Specified ambient service temp. range
-35 –+70°C
Transport and storage temp. range
-40 –+70°C
External supply unit
IN
120 –230V ac, 90 –250V dc
OUT
24V dc
Alarm relay
Control
24V dc from VAMP121(D)
Rated voltage
250V ac/dc

8 Dimensions
8.1 VAMP 121
V121/EN M/A017
19
8. Dimensions
8.1. VAMP 121
Figure 8.1-1. Arc protection unit VAMP 121 dimensions

8.2 VAMP 121D
8 Dimensions
20
V121/EN M/A017
8.2. VAMP 121D
Figure 8.2-1 Arc protection unit VAMP 121D dimensions