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| Printable
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| Power
Protection - Voltage Relays |
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3
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Special
Features |
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Available with Pick-up and Trip
Time Delay in 3-Phase Voltage Relays |
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Smart design to
fit on any standard mounting channel |
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Choice of screw
less terminals |
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2% Accuracy |
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Test and Auto/Manual
Reset facility |
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Signal and Source
(Control supply) are separate |
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Designed for high
reliability, as relay energizes only under fault conditions |
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Only 1/2 phase voltage
relay with user selectable U/V or O/V range by DIP switch |
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Only 1/2 phase voltage
relay with 2 user selectable voltage range by DIP switch |
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Technical
Data |
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Supply Voltage |
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110V/220V/380V/440V AC 50Hz or
12/24V DC |
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Permissible Supply
Variation |
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25% |
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Output Contacts |
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2 change over contacts (2 sets,
one for each set points in case of 2S Relays) |
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Switching Duty |
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6A resistive at 24V DC or 240V
AC |
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Relay Status |
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De-energized in normal conditions
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Set Point (Range) |
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a)VR1-1/VR1-2 = 180-220 &
240-300/340-400 & 440-500 V AC
b)VR96-1 = 180-220 & 240-300/340-400 & 440-500
V AC
c)VR3-3/VR3-4 = 340-400 & 440-500 V AC |
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Time Delay (optional) |
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0.1-10 sec settable |
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Mode of Operation |
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Under Voltage/Over Voltage (user
selectable) & U/V-O/V combined. |
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Reset |
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Automatic/Manual |
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Setting Accuracy |
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5% of Full Scale |
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Mounting |
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Any standard mounting channel |
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Dimensions |
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77mm(W) * 90mm(H) * 110mm(D)
for 2S models - 155mm(W) For VR96-1 = 96mm(W) * 96mm(H) * 70mm(D) |
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Operation
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VR1-1 / VR1-2:
The 1ph/2ph. voltage relay monitors the voltage signal (to
be connected at sensing point) when the signal goes out of the
range selected on the dial, the status of relay will change.
The relays are available with or without time delays. In case
of relays with time delay 'SET' LED will glow when voltage signal
goes out of the range selected. the relay will energized after
delay and is also indicated by 'RLY' LED. |
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VR3-3 / VR3-4:
The 3ph. voltage relay continuously sense the voltage level
of each phase individually, thus if any of the phase goes out
of the range selected on 'Voltage Set' dial, it will change
the status of relay. It will also indicate that voltage of which
phase have gone under or over the range by separate LEDS. The
HEALTHY LED Glows when voltage level is within the voltage range
selected. The relay will energize in fault condition after the
'PICK-UP' time delay and will de-energizes after 'TRIP' time
delay when normal conditions resumes. |
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*
Relays with Two set point can be used for two separate relay
contacts of under and over voltage protection for same source. |
Note:- Design and specifications may change due to our continuous
developmental efforts.
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