IRM

IRM

Protective current transformer

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Article features

  • This protective current transformer is used for system protection in conjunction with the appropriate switching devices
  • Available in numerous protection classes
  • Sealable secondary terminal covers made of clear polycarbonate
  • Double secondary terminals on all versions for short-circuiting the secondary windings before opening the secondary circuit
Primary rail
30 x 15 mm, 80 x 12 mm, 100 x 10 mm, 2 x 100 x 10 mm, 4 x 30 x 10 mm
Dimensions (W × H × D)
115 × 205 × 64 mm
Rated current
1500, 4000, 1600, 2000, 2500, 3000 A
Instrument security factor
FS 5
Primary rail30 x 15 mm, 80 x 12 mm, 100 x 10 mm, 2 x 100 x 10 mm, 4 x 30 x 10 mm
Dimensions (W × H × D)115 × 205 × 64 mm
Rated current1500, 4000, 1600, 2000, 2500, 3000 A
Instrument security factorFS 5

Conditions of use

Secondary current5 A oder 1 A
Nominal frequency50 - 60 Hz
max. permissible operating voltage720 V
Test voltage3 kV / 1 min
Thermal rated continuous currentIcth = 1,2 x Ipr
Thermal rated short-time withstand currentIth = 60 x Ipr
Rated impulse currentIdyn = 2,5 x Ith
Overcurrent rating (FS)n < 5
Insulation classE / F / H
Normative standardsIEC 61869 Teil 1 + 2 / DIN EN 42600
HousingGehäuse aus selbstverlöschendem PA66 V0 nach UL 94

Environmental conditions

Installation locationIndoor use
Ambient temperature (operation)-40°C ... +60°C
Ambient temperature (storage / transport)-40°C ... +60°C
Altitudeup to 1000 m

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