The instrument transformers (CTs) in the DM series are installed in an electrical system to reduce the line current to a secondary value of 5A compatible with the ammeter inputs of the digital multi-meters or protection relays.
DM… are instrument transformers in class 1/0.5 without a primary winding and are normally used for high primary current values starting from 50A. The number of loops of the primary cable does not modify the accuracy but converts the primary current value proportional to secondary current.
Operating frequency: 50-60Hz.
Secondary output current: 5A.
Overload withstand: 120% Ipn.
IEC rated insulation voltage UI: 720V.
Insulation (dry tape): Class E.
Terminals: Faston for DM2T and DM3T types; Screw for DM0T, DM4T and DM5T types.
Sealable terminal covers for DM0T, DM4T and DM35T types.
Fixing on 35mm DIN rail(IEX/EN 60715) or by screws (fixing elements standard supplied with product).
IEC degree of protection: IP30.
Ambient conditions: Operating temperature -25…+50 degrees Celsius; Storage temperature -40…+80 degrees Celsius; Relative humidity, non-condensing 90%.
Mechtric | Industrial Automation & Control Products
The Mechtric Group is a 100% Australian owned group of companies specialising in the supply of electrical and mechanical engineering products.
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