JLS Combination Transformer

Solutions

Structure feature

The product mainly consists of combined instrument transformer and watt-hour meter. The combined transformer is equipped with two or three single phase VT and CT units. The transformer is insulated in 25# transformer oil. The outlet terminals of primary and secondary windings are encapsulated in porcelain bushing and fixed on the panel. Watt-hour meter tank is fixed on the flank of combined instrument transformer and comprises one active watt-hour meter and reactive watt-hour meter. The products are reliable, accurate, light and convenient in installation. They are also designed against stealing electricity.

1. The product is cast in epoxy resin.
2. The transformers are equipped with primary winding and secondary winding. The windings are fixed to the iron core bar by casting.
3. For the two secondary windings, the first one is for either measuring or protection purposes; the other is for being connected into an open-delta connection in a three-phase system.
4. The outlet of the primary winding is insulated from the earth to a correspondent level.
5. The secondary terminal board is covered with a transparent cover made of plastic.
6. The bolted earthed clamp is located on the transformer base plate.
7. The transformer is fixed onto the base plate by four screws.

Outline dimension

We offer current and voltage 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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