Electronic voltage transformer for JED(S)H series GIS

Product overview

JED(S)H type electronic voltage transformer is suitable for the voltage signal of power supply gas measurement, protection and control device in the AC power system with the maximum voltage of 66~500kV and rated frequency of 50Hz. Compared with conventional instrument transformers, electronic transformers have simple insulation structure, small volume and light weight. No iron core, no magnetic saturation, ferromagnetic resonance and other problems; Good anti-electromagnetic interference performance; Large dynamic range and wide frequency response. The insulation structure of the product makes full use of the existing SF6 gas insulation characteristics of GIS, and the insulation structure is simple and reliable.

Product parameter

Model number	JED(S)H
Equipment maximum voltage kV	72.5～550
Rated frequency Hz	50/60
Power frequency withstand voltage kV	160～740
Full wave shock withstand voltage kV	320～1675
Rated gas pressure (absolute value) Mpa	≥0.45
Rated secondary voltage kV	0.004
Accuracy class	0.2/3P
Rated secondary output	IEC 61850-9-1： 2D41H IEC 61850-9-2：Primary voltage×100
Rated voltage factor	1.2/continuous，1.5/30s，1.9/8h

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