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Product information

The EWSKD 31.8 3x50/5A 5VA Kl.0,5s is a compact, high-precision low-voltage measuring transformer from the proven EWSKD series, specially developed for use in power distribution, switchgear, meter panels and industrial measurement and monitoring systems.

Technical main features:
  • Type Flat window-type current transformer (Flat Window-Type) – EWSKD 31.8
  • Transformation ratio 3x50/5 A (primary rated current 50 A per phase, secondary rated current 5 A)
  • Rated power / burden 5 VA
  • Accuracy class Kl. 0,5 s (according to IEC/EN 61869-2 or DIN EN 61869-2)
  • Primary conductor bore Flat window 31 × 8 mm (for busbars or cables)
  • Maximum operating voltage Um ≤ 0,72 kV
  • Rated frequency 50–60 Hz
  • Thermal rated continuous current Icth = 1,2 × Ipr (continuous current 1,2 × primary rated 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 52 mm × height 82 mm × depth 42 mm
  • Weight (approx.) 0,35 kg (depending on version)
  • Mounting DIN rail mounting possible, including secondary short-circuit device

The EWSKD 31.8 3x50/5A 5VA Kl.0,5s is characterised by its very compact design with narrow flat window, high reliability and excellent linearity – ideal for applications in confined control cabinets, in 3-phase systems with moderate currents and precise measurement (e.g. distribution transformers, energy management systems).

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

Contact us for your individual quote!


3D models and more files to each product can be found in our download area downloadarea
Properties
Type-Name: EWSKD
Type number: 31.8
accuracy class: 0,5s
apparent power (VA): 5
primary current: 3x50
secondary current: 5