ISO 9001: 2000
Circuit
Breakers
Switch
Disconnectors
Disconnectors
Earthing
Switches
Operating
Devices
Accessories
WN-1 / WNS-1
Voltage indicator
Voltage indicator with blockade
Catalogue No 06.03.03.EN
1. VOLTAGE INDICATOR WN-1
1.1 APPLICATION.
1.5 SCHEMATIC DIAGRAM OF VOLTAGE INDICATOR.
Voltage indicator is made for luminous signalling of the voltage in MV
electric circuit, for example on the busbar in switching station.
1.2 CHARACTERISTIC FEATURES.
• plain construction;
• simple maintenance;
• high durability and reliability.
1.3 CONSTRUCTION.
Voltage indicator consist the case in which electronic elements are
installed. Three luminous points indicate the voltage in all of phases,
three plug-in sockets and one neutral plug-in socket are placed on front
panel. Its allow on additional control of presence voltage in MV circuits.
One detached plug is placed on back panel of the case for connecting the
wires which are connected to reactance insulators of MV apparatus.
Application of screw terminal facilitates and accelerate installment of the
device.
1.4 DESIGNATIONS OF VOLTAGE INDICATOR.
Voltage indicator is adapted for MV apparatus (switch disconnectors,
disconnecting switches) produced by ZWAE Sp. z o. o. and equipped
with reactance insulators. It can be also use for MV apparatus other
producers which are equipped with similar voltage divider of 230VAC
output voltage.
An example of an order:
N1 - Neon lamp 220V
W1 - Varistor 275VAC
G1 - plug-in socket 4mm black
G2 - plug-in socket 4mm red
G3 - supply socket with 4 conductor track
Voltage indicator type WN-1 is plugged directly to terminals of reactance
insulators of MV apparatus (terminal L1, L2, L3). Additionally the earthing
clamp should be connected to earthing system. Control of correctness of
individual signalling lamp is performed with the aid of additional tester,
which is on the equipment of voltage indicator.
Voltage indicator type WN-1.
2. VOLTAGE INDICATOR WITH BLOCKADE WNS-1
2.1. APPLICATION.
The voltage indicators with blockade are used to the light signaling the
presence of voltage in the circuits of MV, for example, on the summary
rails in distribution rooms. Additionally, the indicators can work with the
system of control equipment making possible or blocking manoeuvring
of certain apparatus. This indicator introduces the additional level of
safety for the user.
The voltage inducator is adjusted to working with aparatus MV (switch
disconnectors,disconnecting switches) produced by ZWAE Sp. z oo
equipped with reactance insulators ,and also with apparatus of different
manufacturers' equipped in similar voltage dividers.
2.2. ADVANTAGES.
• simple and clear structure;
•indicators which describe the status in clear and unambiguous way;
• the easiness of assembly;
• the reliability of working;
• the low power consumption from the auxiliary power supply.
2.3. CONSTRUCTION.
The voltage indicator consists of the casing, in which the electronic
components are installed. On the front panel there are three points of
light indicating the presence of voltage on each phase and three socket
banana type of phase voltage and one socket of a neutral line.They
permit additional control of the voltage presence in circuits of MV. The
indicator possesses also two LED diodes signaling the possibility or the
lack of possibility to manoeuvr the apparatus of MV.
At the back of the casing there are two detachable plugs. The upper one
(4-pines) is used for connecting the flex from the reactance support
insulators of the MV apparatus. The bottom one (8-pines) is used for
connecting the auxiliary power supply and as well as for leading out two
contacts of the relay auxiliary. Contacts condition shows the presence of
voltage on the rails. The solution with the helical clamps of the plag,
considerably makes easy and accelerates the assembly of the device.
Indicators with locking, at standard, are equipped with overvoltage and
antishort-circuit protection.
2.4. WORKING RULES.
The electronic system is applied to the apparatus and it analyse the
presence of voltage in each phase. When the voltage is present on a
least one phase, the system idicates the lack of possibility of
manoeuvering of the MV apparatus (the red diode BLOKADE lights) and
the executive transmitter stops the auxiliary contacts NO in the open
position.The similar action happens in the lack of auxiliary power supply.
However if on all phases threre is no voltage condition, the indicator
shows
the possibility of manoeuvring with the MV connector (the green diode
PERMISSION lights) and the auxiliary contacts NO of the transmitter are
in the state of short-circuit.
2.5. NOMINAL RATING.
Border (minimal) current of signalling:
Imin = 60 µA
Rated currents of signalling:
In = 270 µA
Substitude impedance of one of the phase of the indicator: Zn = 220 kÙ
Auxiliary contacts - two pairs:
2P
Load capacity of the auxiliary contacts:
8A/230 VAC
Power consumption:
<2VA
Auxiliary voltage supply:
230 VAC
220 VDC
110 VDC
Other voltages on customer demand..
An example of an order: Voltage indicator type WNS-1/230 VAC.
2.6. ELECTRIC SCHEME OF THE INDICATOR.
2.7. SAMPLE SCHEME OF CONNECTIONS.
The electric scheme of the part signalling the presence of voltage on
certain phases of the indicator WNS-1 is identical to WN-1. The voltage
indicator WNS-1 are connected directly to the lead out of the reactance
insulators (clamps L1, L2, L3). Additionally the terminal labelled with
earthing sign should be connected to the earting system. The control of
the correctness of signalling of certain bulbs are made with the help of
additional tester, which is a part of the equipment of the indicator.
Auxiliary connectors of the transmitter in the lack of voltage on the
summary rails or the lack of auxiliary voltage are in the state likt in
drawing 2.
The summary rails of a MV distribution room are adjusted to the basis
with the reactance insulators. Voltage dividers which are in insulators are
adjusted directly to the indicator by 4-pines plug. Additional auxiliary
voltage 230VAC is led to the indicator through 8-pines plug. Two pairs of
contacts of the auxiliary transmitter installed in the indicator are also led
out through 8-pine plug. If needed the contacts can be used normally
open or normally closed. Through the normally open contacts (NO) can
be led circuit of the contacteur which controls the electomagnetic
blokade which makes unable the mnoeuvering of the certain apparatus
(i.e. earting switch) in the presence of voltage on summary rails.
Additional contacteur is required in direct controlling of the element of big
inductance. Drawing 3 shows a sample scheme of the connections .
REL1 - Auxiliary relay
G4 - 8-pine plug
Drv.2. Auxiliary contacts of voltage indicator WNS-1.
L3
L2
L1
Tor
pr¹dowy
Current
bus
(Szyna SN)
Reactance
insulator
Izolator
reaktancyjny
Panel tylny
wskaŸnika
WNS-1
Back panel of indicator
L3 L2L1
Zasilanie
z from
Power
supply
obwodu
circuit
control
Auxiliary
Zasilanie
power
supply
pomocnicze
sterowniczego
230VAC
230VAC
N
N
Stycznik auxiliary
steruj¹cy
Optional
elementem wykonawczym
contactor
for blockade
Drv.3. Wiring system of voltage indicator witch blockade WNS-1
3. DIMENSIONAL DRAWINGS
WSKANIK
VOLTAGE
NAPIÊCIA
INDICATOR
L2
L3
L1
ZWAE Sp. z o.o.
www.zwae.com.pl
Assembling hole
68x68mm
Max. thickness of mounting plate
Drv.4. Dimensional drawings of voltage indicators WN-1 i WNS-1.
Note:
Some improvements and alteration may occur as a consequence of development in
manufacturing techniques.
Zak³ad Wytwórczy Aparatów Elektrycznych Sp. z o.o.
ul. Gdañska 60; 84-300 Lêbork
Tel.: (059) 86-336-15; Fax: (059) 86-333-86
e-mail: zwae@zwae.com.pl
www.zwae.com.pl