Rish Delta VAF NX

Rish Delta VAF NX

Datasheet
  • True RMS Measurement
  • 3 Line, 4 Digit Ultra-bright LED display
  • Reliable and accurate measurement
  • Wide-range AC / DC auxiliary power supply  
  • Touch keys for user-friendly display access and configuration
  • On site programmable PT/CT ratios
  • Limit Output (Optional)
  • MODBUS (RS485) Output (Optional)
  • On-site System Programmable: 3 phase 4 wire, 3 phase 3 wire, 1 phase 2 wire, 1 phase 3 wire (split-phase) network
  • Display of minimum and maximum values
  • Password-protected setup mode
  • Low back depth-27mm
  • Compliance to International Safety standard
  • IEC 61010-1- 2018
  • Compliance to International standard IEC 61326

On site programmable PT/CT ratios
It is possible to program primary of external potential Transformer site via (PT), primary of external Current Transformer (CT) on front panel keys by entering into Programming mode.
 
User selectable CT Secondary 5A/1A
The secondary of external Current Transformer (CT) can be programmed on site to either 5A or 1A using front panel keys.
 
User selectable PT Secondary
The secondary of external Potential Transformer (PT) can be programmed on site from 100VLL to 500VLL using front panel keys.
 
User selectable 3 phase 3Wire or 4Wire or 1 phase 2Wire or 1 phase 3Wire Network 
User can program on site the network connection as either 3 Phase 3 Wire or 4 Wire using front panel keys.
 
Low back depth
The instrument has very low back depth (behind the panel) of less than 27mm.
 
True RMS measurement
The instrument measures distorted waveform up to 15th Harmonic
 
RPM Measurement
The instrument display Rotation per minutes for generator applications. Number of poles can be set on site depending upon application requirement.

Optional MODBUS (RS485) Output
The optional MODBUS output enables the instrument to transmit all the measured parameters over standard MODBUS (RS485).

Configuration of Instrument via MODBUS
The instrument setting can be configured locally via front panel  keys by entering into the programming mode or remotely via MODBUS (RS485).
Note : The  MODBUS (RS485) communication parameters can only be set locally via front panel keys in programming mode.

Optional Limit switch (Relay)
The instrument will trip the relay if the programmed parameter exceeds the programmed Trip Limits.
 
Hour Run, ON Hour
Hour run records the number of hours load is connected.
ON Hour is the period for which the auxiliary supply is ON.
 
3 line 4 digits LED display : 
Simultaneous display of 3 Parameters.
 
Onsite selection of Auto scroll / Fixed Screen
User can set the display in auto scrolling mode or fixed screen mode using front panel keys.
 
Min Max storage of parameters possible
The instrument stores minimum and maximum values for System Voltage, System Current, Run Hour, ON Hour. Every 60 sec stored values are updated.
 
Two touch keys
Using the two touch kesy, it is possible to go desired parameter screen instantly.
 
Enclosure Protection for dust and water
Conforms to IP 50 (for front face) as per IEC60529
 
EMC Compatibility
Compliance to International standard IEC 61326.