JLED(S)H series GIS electronic combined transformer

Product overview

JLED(S)H type electronic combined transformer is suitable for power supply gas measurement and electrical protection in the power system with the highest voltage of 66~500kV and rated frequency of 50Hz.

JLED(S)H series electronic combined transformers combine current transformers and voltage transformers. 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	JLED(S)H
Equipment maximum voltage kV	72.5～550
Rated primary current A	50～8000
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
Accuracy class	Measurement level：0.2S Protection level：5TPE
Rated secondary output	IEC 61850-9-1：Measuring channel：2D41H Protection channel：01CFH IEC 61850-9-2：Rated primary current×1000
Short-time thermal current	50kA·3s

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Frequently Asked Questions

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