Lovato DM4T1200 - CURRENT TRANSFORMER - SOLID-CORE - FOR Ø86MM CABLE - FOR 100X30MM - 80X50MM - 70X60MM BUSBARS - 1200A

General characteristics

The current 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 multimeters 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.

Operational characteristics

– Operating frequency: 50-60Hz
– Secondary output current: 5A
– Overload withstand: 120% Ipn
– IEC rated insulation voltage Ui: 720V
– IEC rated short-time thermal current Ith: 40-60 Ipn for 1 second
– IEC rated dynamic current Idyn: 2.5 Ith for 1 second
– Insulation (dry type): Class E
– Terminals:
• Faston for DM2T and DM3T types
• Screw for DM0T, DM4T and DM35T types
– Sealable terminal covers for DM4T and DM35T types
– Fixing on 35mm DIN rail (IEC/EN 60715) or by screws (fixing elements standard supplied with the product)
– IEC degree of protection: IP30
– Ambient conditions
• Operating temperature: -25 ... +50°C
• Storage temperature: -40 ... +80°C.
• Relative humidity, non condensing: 90%.

Reference standards

Compliant with standards: IEC/EN 61869-2, IEC/EN 61869-1.