RIS Digital Power Measurement System

Digital Power Measurement System


 

Specifications
Programmable Configuration
2 element for 3 phase 3 wire wye or delta 2 1/2 element for 3 phase 4 wire wye 3 element for 3 phase 4 wire wye

Measured and/or calculated quantities
Watts - per phase and total
Vars - per phase and total
Voltage - phase to neutral (4 wire), phase to phase (3 wire) Current - phase and neutral (calculated)
Volt Amps - per phase and total
Frequency
Distortion - Total Harmonic Distortion of each voltage and current Watthours - delivered and received
Varhours - delivered and received
Power Factor - per phase and system

Inputs
Current
Nominal - 5 amps
Operating Range - 0 to 1 0 amps
Voltage
Nominal - 120 volts
Operating Range - 85 to 1 50 volts
Frequency
45 to 65 Hertz
Power Supply
95 to 265 VAC @ 50/60 Hz or DC
Outputs
3 Channel Analog
Option Xl: 0 to ± 1 ma, maximum 10 volt compliance Option XA: 4 to 20 ma, maximum 12 volt compliance 6 Channel Digital - Option XD
Solid state rated 50 ma @l 35 VACNDC with less than 5 volt drop

Measurement/Calculation Accuracy:
Volts, Amps, Wafts, Vars, Watthours, Varhours: 0.2% of rated output
Neutral current: 0.75% of Rated output
Volt Amps: 0.5% X Rated output
Power Factor: ±0.008* (rated VA/input VA)
Analog output: ±0.1% of rated output

Environment
Operating Temperature range: -20' to +70'C
Storage Temperature: -40' to +85'C
Humidity:    20 to 90% RH non condensing
RFI:    <1 % when subjected to 1 0 WM @ 1 meter
ESD:    IEC 801-2 level 3 (8 kV) with no damage
Surge Withstand: ANSI/IEEE C37.90, IEC 801-4 Class 4
Isolation:2500 VAC RMS from Input/Output/Power/Case 500 VAC RMS between digital outputs Communication/Configuration ports share with the analogoutputs

Influences Affecting Accuracy
Temperature:    Conversion only: 75 ppm/'C Including analog outputs: 125 ppm/'C
Long Term Stability: 0.1% of rated output/year, noncumulative
Humidity:    less than 0.05% of rated output over the operating range

Mechanical
Size:    3.75'x 5.375" x 6.5"
Weight: 2.6 lbs. (1.2 kg.)

Communications (optional)
Hardware Protocol: RS-232 (full duplex) or RS-485 (half duplex)
Software Protocol: Modbus or DNP