Prok Devices Private Limited
Prok Devices Private Limited
Rajaji Nagar, Bengaluru, Karnataka
GST No. 29AAACP7896A1Z5
Call 08048764939 81% Response Rate
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Numerical Voltage Relay

Our range of products include numerical voltage relay.
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Numerical Voltage Relay
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Numerical Voltage Relay

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Product Details:
BrandProk DVS
Model Name/NumberPNVNSP
TypeNumerical Digital Voltage Relay
Relay TypeDigital Voltage Relay
Frequency45HZ to 65HZ
FeaturesHigh speed feature for under voltages and over voltages
Meeting the demands of customers as a manufacturer, supplier, exporter and trader, we are offering Numerical Voltage Relay. Keeping in mind the protection of power plants and feeders, these relays are applicable in protection of motor & generators and main or backup protection. Appreciated for longer functional life and integrated draw out system, our offered relays are provided with modular integrated draw out system and nonvolatile memory for data retention.


  • Long functional life
  • High speed
  • Integrated draw out system


  • IDMT & Definite time characteristics
  • Negative phase sequence detection
  • High Pickup/drop off ratio
  • Modular Integrated draw out system
  • Nonvolatile memory for data retention
  • Wide range of system voltages
  • High speed feature for under voltages and over voltages
  • 2 line, 16 character back-lit LCD display and key pad
  • Very low burden on measurement and Aux circuits
  • Accurate and reliable measurement of voltages
  • Field selectable system voltages

System Voltage380V, 400V, 415V and 433V-3Ph 4W
Frequency Range45 Hz to 65 Hz
Pick-UpOver Voltage-101% of Set Value Under Voltage-99% of Set Value
Drop-OutOver Voltage 1% Below Pick-Up Voltage Under Voltage-1% Above Pick-Up Voltage
Response Time<100ms
Setting RangeUnder Voltage: Uv<0.99 to 0.50 Un in Steps of 0.01
Uv<<0.99 to 0.50 Un in Steps of 0.01(High Set)
Over Voltage: Ov>1.01 to 1.30 Un in Steps of 0.01
Ov>>1.01 to 1.30 Un in Steps of 0.01(High Set)
% of Negative Sequence(1-25%) in Steps of 1%
Negative Sequence Definite Time(0-300) in Steps of 1 sec
Negative Sequence Instantaneous Time (NS>>) for >25%(0.0-5.0 Sec) in Steps of 0.1
Time for Higher Set (UV<<&OV>>)(0.0-5.0 Sec) in Steps of 0.1


  • Protection of motor and generators
  • Main or backup protection
  • For detection of OV&; UV in power plants and distribution system
  • Protection of transformer panel & Capacitor control panel

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