Numerical Voltage Unbalance monitoring realy (3 ph. 4w with ph reversal and neutral Snap)
₹23,952.50
Product Code: JNV 026
Time line :Products will be shipped within 3 weeks from the date of order
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Product Description
Features
- Software based design
- Trips on neutral snap
- Programmable Active / Inhibit facility
- Programmable Rated voltages.
- Wide range of time delay setting
Application
JNV 026 is a numerical unbalance voltage relay, with
under voltage(UV), over voltage(OV) and Neutral snap
which is used for three phase systems etc.
Principal of Operation
JNV 026 measures and displays 3 phase voltages (R,Y,B phases). It calculates percentage of
unbalance voltage and if it exceeds the set unbalance voltage, the relay operates after the elapse
of operating time. Under voltage fault will be detected when voltage on any phase is less than the
set Under voltage limit, the relay operates after elapse of under voltage operating time. Over
voltage fault is detected when voltage on any phase is more than the set Over voltage limit, the
relay operates after elapse of over voltage operating time. Neutral snap will be detected when
Neutral is disconnected.
Ratings
Settings
OVER LOAD RATINGS
Rated voltage and Aux. supply :
220V AC / 110V AC
Frequency :
50Hz
Rated voltage ( Vn) :
220 to 250 V in steps of 10V ( for 220V rated)
110 to 125V in steps of 5V ( for 110V rated)
110 to 125V in steps of 5V ( for 110V rated)
Unbalance voltage :
1 to 10% in steps of 1%
UBV time delay :
0 - 300s in steps of 1s
Under voltage :
Vn -50V in steps of 1V (for rated voltage 220V)
Vn -25V in steps of 1V (for rated voltage 110V )
Vn -25V in steps of 1V (for rated voltage 110V )
UV time delay :
0 - 300s in steps of ls
Over voltage :
Vn +25V in steps of 1V for rated voltage
220V & 110V
OV time delay :
0 - 300s in steps of 1s
Active / Inhibit facilities :
Active / Inhibit facilities for UV, OV, UBV
Over load :
2 times rated voltage continuously.
Burden
Accuracy
Contact Ratings
Contact Durability
Mechanical Design
Aux. Supply :
10 VA max.
Voltage Input :
0.1 VA max.
Operating value :
±5%
Operating time :
±5%
Rating :
10A at 24V DC/230V AC
Loaded contact :
10,000 operations min.
Unloaded contacts :
100,000 operations min.
Weight :
2500gms. Approx.
Case Size :
144 mm,depth 117mm
Installation :
Flush mounting
Panel cuttout :
138 x 138 mm
Terminal Diagram
