LZZBW‑35B 35kV Outdoor Current Transformer for Medium Voltage Substation

Model and its meaning

Summarize

Unify input specifications for measurement and protection devices to simplify equipment design

Currents in power systems vary greatly, ranging from tens of amperes to tens of thousands of amperes. Current transformers convert high primary currents into standard, lower secondary currents (typically 5A or 1A) using a fixed ratio (such as 1000/5A or 600/1A). This eliminates the need for individual design of measuring instruments, relay protection devices, and other equipment based on different primary current specifications. Instead, they simply adapt to the standard 5A or 1A input. This significantly reduces equipment R&D, production, and selection costs, while improving equipment versatility and interchangeability.

Normal service condition

Installation place : outdoor.

Ambient temperature : maximum temperature 40℃ ; minimum temperature -25℃; the average daily temperature does not exceed 30℃.

Atmospheric conditions : no serious pollution in the atmosphere

Technical parameter

LZZBW-35B1 current transformer technical parameter table

LZZBW-35B2 current transformer technical parameter table

Rated secondary current : 5A or 1A, rated insulation level : 40.5 / 95 / 185kV.

Structure and characteristics

This series of current transformers is an outdoor type, epoxy resin casting fully enclosed pillar structure, with excellent insulation performance and moisture-proof and decontamination capabilities. The series of products have compact structure, high performance and high parameters. The primary P1 and P2 terminals are drawn from the top of the product, and the secondary terminal is drawn from the closed outlet box in the lower part of the product.