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Product information

The EWSK 31.5 30/5A 10VA 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 current transformer – EWSK 31.5
  • Transformation ratio 30/5 A (rated primary current 30 A, rated secondary current 5 A)
  • Rated power / burden 10 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 (window bore)
  • Maximum operating voltage Um ≤ 0.72 kV
  • Rated frequency 50–60 Hz
  • Thermal rated continuous current Icth = 1.2 × Ipr (continuous current 1.2 × rated primary current)
  • Thermal rated short-time current Ith = 100 × Ipr, 1 s
  • Insulation class E
  • Insulation test voltage 3 kV, 50 Hz, 1 min
  • Dimensions (approx.) Width 62 mm × height 62 mm × depth 42 mm
  • Weight (approx.) 0.25–0.30 kg (depending on version)
  • Mounting Rail and wall mounting possible

The EWSK 31.5 30/5A 10VA Kl.0,5 is characterised by its very compact design, high reliability and excellent linearity – ideal for applications where precise measurement is required at relatively low currents (e.g. smaller distribution boards, measuring stations, energy monitoring systems with moderate power requirements).

We are happy to supply this model from stock at short notice or configure further primary currents of the EWSK series for you (15 A to 200 A possible).

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): 10
primary current: 30
secondary current: 5