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4.2.7 Safety
IEC1010-1 (BSEN 61010-1) Permanently connected use, Normal Condition Installation category
III, pollution degree 2, Basic Insulation 720V RMS maximum. Auxiliary circuits (12-48V auxuliary,
communications, relay and analogue outputs, where applicable) are separated from metering
inputs and 100-250V auxiliary circuits by at least basic insulation. Such auxiliary circuit terminals
are only suitable for connection to equipment which has no user accessible live parts. The
insulation for such auxiliary circuits must be rated for the highest voltage connected to the
instrument and suitable for single fault condition. The connection at the remote end of such
auxiliary circuits should not be accessible in normal use. Depending on application, equipment
connected to auxiliary circuits may vary widely. The choice of connected equipment or
combination of equipment should not diminish the level of user protection specified.
4.2.8 Insulation
Dielectric voltage withstand test 3.25kV RMS 50Hz for 1 minute between all isolated
electrical circuits
4.2.9 Environmental
Operating temperature -20 to +70°C
Storage temperature -20 to +80°C
Relative humidity 0 .. 95% non condensing
Shock 30g in 3 planes
Vibration 10 to 15 Hz @ 1.5 mm peak-peak
15 to 150 Hz @ 1.0g
Enclosure integrity (front face only) IP54
Harmonic distortion max 50% THD up to 15th harmonic
4.2.10 Enclosure
Style ANSI C39.1
Material Polycarbonate front and base, steel case
Terminals 6-32 UNC slotted barrier type
Weight 1.3kg
4.3 Display/Tranducer Combined 1000 and 1540
See section 4.3.16 for specifications particular to the 1540
4.3.1 Inputs
Nominal input voltage (a.c. rms) 57.7 to 600V L-N (single phase)
100 to 600V L-L (3 wire)
57.7 to 346V L-N (4 wire)
System PT/VT primary values 1V to 400KV
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Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03