CURRENT TRANSFORMERS DM...T SERIES

The DM...T series current transformers (CT) are installed in electric systems to reduce the line current to a secondary value of 5A, which is compatible with current inputs of digital multimeters or protection relays.
These are without primary winding and are used for high primary current values from 40A up.
Suitable for screw fixing or mounting on 35mm DIN rail (EN50022), using the standard-supplied kit.
The number of loops of the primary cable does not modify the accuracy but converts the primary current value proportional to secondary current.


300 / 5A
1 loop = 300 / 5A
300 / 5A
2 loops = 150 / 5A
300 / 5A
3 loops = 100 / 5A

Operational characteristics

  • Operating frequency: 40÷60Hz
  • Secondary current: 5A
  • Overload withstand: 1.2In
  • Rated dynamic current Idyn: 2.5Ith for 1second
  • Degree of protection: IP30
  • Relative humidity, non condensing: 90%
  • Insulation (dry tytpe): class E
  • Ambient operating temperature: -25...+50°C
  • Ambient storage temperature: -40...+80°C
 Order code  Primary current  Burden
   cl. 0.5  cl. 1
   [A/5]  [VA]  [VA]
 For Ø22m cable.
 DM1T 0040   40   -   1
 DM1T 0050   50   -   1
 DM1T 0060   60   -   1
 DM1T 0080   80   1.5   3
 DM1T 0100   100   1.5   3
 DM1T 0150   150   1.5   3
 For Ø23mm cable.
  For 30x10mm, 25x12,5mm, 20x15mm busbars.
 DM2T 0060   60   -   1
 DM2T 0080   80   -   1
 DM2T 0100   100   -   1
 DM2T 0150   150   -   1
 DM2T 0200   200   1.5   3
 DM2T 0250   250   1.5   3
 DM2T 0300   300   1.5   3
 DM2T 0400   400   1.5   4
 For 40x10mm, 30x20mm, 20x25mm busbars.
 DM3T 0200   200   2   4
 DM3T 0250   250   2.5   5
 DM3T 0300   300   4   6
 DM3T 0400   400   5   8
 DM3T 0500   500   6   10
 DM3T 0600   600    6   12
 DM3T 0800   800    8   15
 DM3T 1000   1000    10   20

 
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