METREL A 1018, User Manual

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A 1018, A 1019, A 1033 Current clamps
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2. Description of current clamps
The A 1018, A 1019 and A 1033 are 1000/1 ratio current clamps for
measuring alternating currents in the range from 1 mA to 1000 A
(depending on the type).
They can be connected to any power analyzer, energy analyzer, harmonics
analyzer, multimeter, earth resistance meters, electrical installation testers
and other measuring instruments with compatible voltage or current inputs.
In chapter 4 some typical current clamp applications are described.
The current transducer is housed in a plastic case that maintains the
protection class defined in technical specifications. It consists of:
1. Handles,
2. Safety barrier,
3. Conductor opening,
4. Current transformer,
5. Connection with:
a) Safety banana inlet (A 1019),
b) Cable connection (length = 1.5 m) with safety banana terminals (A
1018),
c) Cable connection (length = 1.5 m) with special output connectors
(A 1033).
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2
3
4
5
a) b) c)
3. Maintenance
3.1. Inspection
To maintain operator safety and ensure reliability of the current clamp it is
good practice to inspect it on a regular basis. Check that the enclosure and
optional connection are without defects such as scratches or breaks.
Jaw surface must be clean. Pollution on jaw surfaces reduces the current
clamp sensitivity.