Characteristics
2.6 Environmental Conditions
2
2-9
Accuracy
5 to 10 Hz
1 to 500 A ............................................................................................-3 dB typically
10 to 20 Hz
1 to 300 A ..........................................................................................................± 5 %
300 to 400 A ....................................................................................................± 15 %
400 to 500 A ....................................................................................................± 25 %
20 to 45 Hz
1 to 500 A ..........................................................................................................± 5 %
45 to 65 Hz
1 to 20 A .............................................................................. ±5 % of reading + 0.3 A
20 to 100 A ........................................................................................±5 % of reading
± 3 ° phase shift
100 to 500 A ......................................................................................±2 % of reading
± 5 ° phase shift
65 Hz to 3 kHz
1 to 50 A ............................................................................................. ±(5 % + 0.4 A)
50 to 500 A ........................................................................................................± 5 %
Influence of temperature on accuracy ...................................<0.15 % per 10 °C (18 °F)
Altitude
During operation.................................................................................2.0 km (6560 feet)
While stored......................................................................................12 km (40 000 feet)
2.6 Environmental Conditions
Environmental ..................................................... MIL 28800E, Type 3, Class III, Style B
Temperature
During operation...................................................................... 0 to 50 °C (32 to 122 °F)
While stored...........................................................................-20 to 60 °C (-4 to 140 °F)
Humidity
During operation:
0 to 10 °C (32 to 50 °F) ................................................................... non-condensing
10 to 30 °C (50 to 86 °F) .........................................................................95 % ± 5 %
30 to 40 °C (86 to 104 °F) ........................................................................75 % ± 5 %
40 to 50 °C (104 to 122 °F) ......................................................................45 % ± 5 %
While stored:
-20 to 60 °C (-4 to 140 °F)................................................................. non-condensing
Altitude
During operation..............................................................................4.5 km (15 000 feet)
The maximum input and floating voltage is 600 Vrms up to 2 km.
Linearly derating from 600 down to 400 Vrms between 2 km to 4.5 km.
While stored......................................................................................12 km (40 000 feet)
Vibration.................................................................................................................max. 3 g
Shock.....................................................................................................................max. 30 g
Electromagnetic Compatibility (EMC)
Emission ............................................... EN 50081-1 (1992): EN55022 and EN60555-2
Immunity.................................................... EN 50082-2 (1992): IEC1000-4-2, -3, -4, -5
(See also Tables 2-1 to 2-3)
Enclosure Protection .............................................................................IP51, ref.: IEC529
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