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APPLICATION:
'DAV' Automatic Semaphore Indicators are used in mimic diagram
on Control and Instrumental Panel to indicate open or close
position of isolator, Earth switch, Circuit Breaker, PT On/Off
switch. The pointer takes up position of the supervised equipment
and turns right angle when breaker, isolator etc. is in open
position, it takes up intermediate position i.e. 45 °
on failure supply. Our indicators are enclosed in Glass cover
with Black dial which matches with all mimic colours and hence
there is no necessity to paint the mimic colour on the dial.
SPECIAL FEATURES:
- Type
Tested as per IS-3231 -
1965 at IDEMI Bombay.
- High Operating torque and positive
action.
- Coils are continuously rated for
24-30 V DC.
- Withstands 2.5 KV HV Test.
- Very Low Burden (Less than 15mA)
- Indicator is dust proof.
- Available in round bazel having 36mm, 48mm and 63mm dia
- Designed for 24-30V DC Control supply and can be used
for higher DC voltage of 110V DC using 6K Ohms, 6W resistor
and for 220V DC using 16-18K Ohms 12W Screw in type resistor,
ins eries on centre terminal.
- Fully type tested including for 1 lakh Mechanical operations.
TECHNICAL DATA:
| Terminals |
3 Nos; Center terminal is common / -ve. Positive is
connected to terminal 1 or 2. |
| Operating Voltage(D.C.) |
60% to 120% of rated voltage |
| Rated Voltages |
24V / 30V DC - No external resistor, 110V DC - with
6K Ohms, 6W external resistor, 220V / 250 DC - with 16-18K
Ohms, 12W external resistor. |
| Burden |
15 mA (Maximum) |
| Bazel size option |
63 mm dia round Bazel - Type DAV - 22L
48 mm dia round Bazel - Type DAV - 22
36 mm dia round Bazel - Type DAV 12 |
| Mechanical Life |
Tested for 1 lakh operation |
PRODUCT:
Specifications are subject to modifications due to continuous
improvements.
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