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Max continuous input voltage 120% of nominal (up to 720V max.)
Max short duration input voltage 2*nominal (1s application repeated 10 times at
10s intervals)
Nominal input voltage burden 0.2VA approx. per phase
Nominal input current 1 or 5A a.c. rms
System CT primary values Std. values up to 4kA (1 or 5 Amp secondaries)
Max continuous input current 120% of nominal
Max short duration current input 20*nominal (1s application repeated 5 times at
5 min intervals)
Nominal input current burden 0.6VA approx. per phase
4.3.2 Auxiliary Power Supply
The unit can be powered from an auxiliary a.c. or d.c. supply that is separate from the metered
supply. Versions of the unit are available to suit 100-200V 45-65 Hz a.c./d.c. and 12-48V d.c
supplies.
Standard supply voltage 100 to 250V a.c. nominal ±15% (85V a.c. absolute
minimum to 287V a.c. absolute maximum) or 100V to
250V d.c. nominal +25%, -15% (85V d.c. absolute
minimum to 312V d.c. absolute maximum)
a.c. supply frequency range 45 to 66 Hz or 360 to 440 Hz (Model 0440)
a.c. supply burden 3W
d.c.supply 12 to 48V d.c.. nominal +25%, -15% (10.2V d.c. absolute
minimum to 60V d.c. absolute maximum)
d.c. supply burden 3W
4.3.3 Accuracy
Voltage 0.4% of reading ±0.1% of range
Current 0.4% of reading ±0.1% of range
Neutral current 4% of range
Frequency 0.15% of mid frequency
Power factor 1% of Unity
Active power (W) 0.9% of reading ±0.1% of range
Reactive power (VAr) 1.9% of reading ±0.1% of range
Apparent power (VA) 0.9% of reading ±0.1% of range
Active energy (W.h) 1 Class (IEC 1036, Active PF 0.8-1-0.8 importing)
Reactive energy (VAr.h) 2%, Reactive PF 0.8-1-0.8 importing)
Temperature coefficient 0.013%/°C typical
Response time to step input 1.5 seconds approx.
Error change due to variation Twice the error allowed for the reference
of an influence quantity in the condition applied in the test.
manner described in section 6
49
Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03