Specifications

• Nominal input voltage: 57.7 to 277V L-N, 100 to 480V L-L
• Max continuous input voltage: 120% of nominal
• Max short duration 2 x for 1 second, repeated 10 times at 10
• input voltage: second intervals
• System VT ratios (primary): Any value up to 400kV **
• Nominal input voltage burden: < 0.2 VA
• Nominal input current: 5A (1A option)
• System CT primary values: 9999:5A or 9999:1A max 360MW **
• Max continuous input current: 120% nominal
• Max short duration current input: 20 x for 1 second, repeated 5 times at 5 second intervals
• Nominal input current burden: < 0.6 VA ** maximum VT and CT ratios are limited so the combination of primary voltage and current does not exceed 360MW at 120% of relevant input

Outputs

• RS485 communications: 2-wire half duplex
• Baud rates: 2400, 4800, 9600, 19200
• Pulsed: Clean contact SPNO
• Pulse duration: 60, 100 or 200 milliseconds
• Pulsed outputs: 1
• Analogue outputs: 2

Auxiliary

• Standard nominal 100-250V, AC or DC
• supply voltage: (85-287V, AC absolute) or (85-312V, DC absolute)
• AC supply frequency range: 45-66Hz
• AC supply burden: 6VA
• Optional auxiliary DC supply: 12-48V, DC
• (10.2-60V, DC absolute)
• DC supply burden: 6 VA

Measuring ranges

• Voltage: 80-120% of nominal (functional 5-120%)
• Current: 5-120% of nominal
• Frequency: 45-66Hz
• Power factor: 0.8 capacitive – 1 – 0.8 inductive (functional 4 quadrant, 0-1 lag/lead)
• THD: Up to 31st harmonic (0%-40%)
• Energy: 7-digit resolution

Reference conditions

• Ambient temperature: 23°+/-1°C
• Input frequency: 50 or 60Hz ±2%
• Input waveform: Sinusoidal (distortion factor < 0.005)
• Auxiliary supply voltage: Nominal +/-1%
• Auxiliary supply frequency: Nominal +/-1%
• AC auxiliary supply waveform: Sinusoidal (distortion factor < 0.05)
• Magnetic field of origin: Terrestrial flux

Accuracy

• Voltage: +/-0.17% of range maximum
• Current: +/-0.17% of nominal
• Frequency: 0.15% of mid frequency
• Active power: +/-0.2% of range maximum
• Power factor: 1% of unity
• Reactive power (VAr): +/-0.5% of range maximum
• Apparent power (VA): +/-0.2% of range maximum
• THD: +/-1%
• Neutral current calculated: +/-0.95% of nominal
• Neutral current measured: +/-0.17%
• Energy: 0.3% or range maximum (Better than class 1 IEC1036 Sect 4.6)
• KVArh: 0.6% of range maximum
• Temperature coefficient: Voltage & current typical: 0.013%/°C
• Watts typical: 0.018%/°C
• Update time: Display: 1 second. Optional digital port: 250ms
• Analogue output: +/-0.2%