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Product information

The EWSK 31.5 40/1A 2,5VA Kl.0,5 is a compact, high-precision low-voltage measuring transformer of the proven EWSK series, specially developed for use in power distribution, switchgear, meter panels and industrial measurement and monitoring systems.

Key technical features:
  • Type Window-type current transformer (Window-Type) – EWSK 31.5
  • Transformation ratio 40/1 A (primary rated current 40 A, secondary rated current 1 A)
  • Rated power / burden 2,5 VA
  • Accuracy class accuracy class 0,5 (according to IEC/EN 61869-2 or DIN EN 61869-2)
  • Primary conductor bore For round conductors up to max. Ø 31 mm (cable entry)
  • Maximum operating voltage Um ≤ 0,72 kV
  • Rated frequency 50–60 Hz
  • Thermal rated continuous current Icth = 1,0 × Ipr (continuous current 1 × primary rated current)
  • Thermal rated short-time current Ith = 60 × Ipr, 1 s
  • Insulation class E
  • Insulation test voltage 3 kV, 50 Hz, 1 min
  • Dimensions (approx.) Width 60 mm × height 80 mm × depth 35 mm
  • Weight (approx.) 0,25–0,35 kg (depending on version)
  • Mounting Split-core design for easy retrofitting, rail and wall mounting possible

The EWSK 31.5 40/1A 2,5VA Kl.0,5 stands out for its very compact design, high reliability and excellent linearity – ideal for applications where high-precision measurement is required at relatively low currents (e.g. smaller distribution boards, measuring stations, energy monitoring systems with moderate power requirements and increased accuracy demands).

We are happy to supply this model from stock at short notice or configure further primary currents of the EWSK series for you.

Contact us for your individual quotation!


3D models and more files to each product can be found in our download area downloadarea
Properties
Type-Name: EWSK
Type number: 31.5
accuracy class: 0,5
apparent power (VA): 2,5
primary current: 40
secondary current: 1