Ashida Electronics Private Limited

·         1 Phase inverse time over voltage Relay or
          under voltage protection.

·         Programmable (Non- Volatile) Setting By
          local keys Back - lit LCD display for settings.

·         Display of fault voltage / Load voltage.

·         IDMT Curve. Equivalent VDG11 and VDG13
          of EE make relay.

·         Design using DSP technology.

·         Latching of fault value.

·         Pass-word protection for setting.

·         1 Phase inverse time over voltage Relay or
          under voltage protection.

·         Programmable (Non- Volatile) Setting By
          local keys Back - lit LCD display for settings.

·         Display of fault voltage / Load voltage.

·         IDMT Curve. Equivalent VDG11 and VDG13
          of EE make relay.

·         Design using DSP technology.

·         Latching of fault value.

·         Pass-word protection for setting.

·         With RS232 & 485 port.

·         1 Phase Neutral Displacement Relay.

·         Programmable (Non- Volatile) Setting By
          local keys.

·         Display of fault voltage / Load voltage.

·         Back - lit LCD display for settings.

·         Voltage Sensing Setting Range – 5V to
          20V. in steps of 0.5V.

·         IDMT Curve equivalent to VDG14 of EE.

·         Design using DSP technology.

·         3 Phase start connected, full under / over
          voltage protection..

·         Programmable (Non- Volatile) Setting By
          local keys Back - lit LCD display for settings.

·         Display of fault voltage / Load voltage.

·         Wide Under voltage range – 45% to 100%
          (100% = bypass under voltage element).

·         Wide Over voltage range – 100% to 155% 
          (100% = bypass over voltage element).

·         Design using DSP technology.

·         Latching of fault value.

·         Pass-word protection for setting.

·         3 Phase start connected, full under / over
          voltage protection..

·         Programmable (Non- Volatile) Setting By
          local keys Back - lit LCD display for settings.

·         Display of fault voltage / Load voltage.

·         Wide Under voltage range – 45% to 100%
          (100% = bypass under voltage element).

·         Wide Over voltage range – 100% to 155%
          (100% = bypass over voltage element).

·         Design using DSP technology.

·         Latching of fault value.

·         Pass-word protection for setting.

·         RS232C and RS485 Communication port.

General Description

This is micro-controller based frequency monitoring relay with communication port for SCADA operation.

Standerd Specification

·         Accurate Frequency monitoring with Crystal
          Controlled references.

·         Trip Frequency Point can be selected with
          0.01 Hz Resolution.

·         Self-Calibration and check ON-Site facility
          inbuilt.

·         Instrument tested to withstand as per
          IS:3231, IS:8686-1977 Specification.

·         Two Independent set points programmable
          as Under or Over Frequency.

·         RS232 & RS485 Communication Port for
          remote SCADA.

·         AC Input from 230 / 110 / 63 V AC PT for
          Frequency Sensing.

·         Frequency setting Range : 49.99 Hz to
          40.00 Hz in steps of 0.01 Hz for Under
          Frequency

·         and 50.01 Hz to 60.00 Hz in steps of 0,01
          Hz for Over Frequency.

·         Accuracy Setting : +/- 0.01 Hz Repeat
          Accuracy better then 0.05 Hz.

·         Delay Time Adjustment : 0 to 99.9 sec
          Accuracy +/- 5% or +/- 0.02s whichever is
          Higher.

·         Programmable Hysterisis.

·         This Relay is also available with 2 Stage
          df/dt and 2 Stage Under/Over Frequency
          Features.