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LZZBJ12-12-Current-Transformer

LZZBJ12-12 Current Transformer

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Description

 

The LZZBJ12-10kV current transformer is an advanced, epoxy resin-cast indoor current transformer designed for 10kV medium-voltage power systems. It is used for accurate current measurement, metering, and relay protection in industrial and utility power distribution networks.

With its enhanced insulation performance, multi-core capability, and compact design, the LZZBJ12 is a trusted solution for switchgear manufacturers, substations, and industrial electrical engineers looking for high accuracy and long-term reliability.

Type LZZBJ12-12  current transformer is used for metering and protective relaying purposes for installation in indoor up to 12kV rated voltage frequency 50/60Hz, the current transformer is used for metering and protective relaying action in indoor and especially is suited for using in the narrow case(fixed) ring-network switchgear.

 

Model

LZZBJ12-12

 

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Parameters

 

Main Technical parameters

  1. Rated insulation level: 12/42/75kV;
  2. Frequency(Hz): 50/60Hz;
  3. Rated primary current: 5-3150;
  4. Rated secondary current: 5A;
  5. Accuracy classes: 0.5/5P;
  6. Metering pole safeguard system: FS<10;
  7. 5P rated accuracy limited factor: 5P10;
  8. The measurement of partial discharge lev el is in accordance with GB7354-87 and IEC 185 Apparent partial discharge level not more than 20PC;
  9. Power factor: 0.8 (hysteresis);
  10. Rated primary current accuracy classes, rated output and short-time thermal Current see table.
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Solutions

 

LZZBJ12 current transformers are integral to the safe and efficient operation of medium-voltage electrical equipment in demanding industrial environments.

✅ Common applications include:

  • Medium-voltage switchgear and RMU panels (10kV class)
  • Industrial and utility substations
  • Power monitoring, SCADA, and automation systems
  • Transformer and motor protection schemes
  • Industrial control cabinets and MCCs
  • Renewable energy substations (wind/solar)

 

Outline dimension for LZZBJ12-12/150b/2s AS12/150b/2s

 

Order LZZBJ12-12 Current Transformers for Your Project

We offer LZZBJ12-12 current transformers with a full range of current ratios, accuracy classes, and mounting options to suit any industrial or utility-grade power distribution project.

  • Certified to IEC and GB standards
  • OEM and custom labeling available
  • Tested for partial discharge, insulation resistance, and ratio error
  • Ideal for panel builders, switchgear manufacturers, and EPC contractors

 

METTZ Group stands as a consortium of Chinese electrical firms, renowned for its expertise in manufacturing electrical equipment. We are specialized in crafting a comprehensive suite of transmission and distribution equipment, covering a wide voltage range from 0.4 to 40.5 kV. Our commitment lies in delivering reliable and stable products to our clientele, encompassing vacuum circuit breakers (VCB), gas-insulated switchgear modular units (RMU), solid insulated switchgear (SIS) panels, air insulated switchgear (AIS) panels, and dry compressed air insulated switchgear panels (DIS) and components for each type of products.

Since our inception, METTZ Group has been at the forefront of adopting international cutting-edge technologies and equipment. We pride ourselves on our extensive collaboration and dialogue with leading experts in the electrical technology sector, both within China and internationally. Our offerings are tailored to meet the specific needs of our clients, including Original Equipment Manufacturer (OEM) services, customization of products to unique parameters and dimensions, all in alignment with our customers’ specifications.

METTZ Group is dedicated to innovation, quality, and customer satisfaction, ensuring that we remain a preferred partner for electrical equipment solutions worldwide.

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