Product Introduction
Combination Instrument Transformer
The product mainly consists of combined instrument transformer and watt-hour meter. The combined transformer is equipped with 2 or 3 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 combined instrument transformer have 5 version with
different voltage 3/6/12/36KV.The transformer are designed
for 3 phase electric systems of rated frequency of
50/60Hz.The products are used in metering electric energy,
voltage controlling and relay protection applications.
Product Advantage
1.Reliable Structure
The products are reliable, accurate, light and convenient in installation. They are also designed against stealing electricity.
1 - The transformer equipped with primary and secondary winding. The windings are fixed to the iron core bar by casting.
2 - For the two secondary windings, the first one is for either measuring or protection purpose; the other is for being connected into an open-delta connection in a 3 phase system.
3 - The outlet of the primary winding is insulated from the earth to a correspondent level.
4 - The secondary terminal board is covered with a transparent cover made of plastic.
5 - The bolted earthed clamp is located on the transformer base plate.
6 - The transformer is fixed onto the base plate by four screws.
2. High-Quality
1. Our factory has a unique comprehensive testing center, and each finished transformer needs to pass the test before it can be shipped;
2. After each process in the production of the transformer is completed, we will conduct a qualified test, and the quality of the transformer has reached the highest level.
Mechanical Parameters
Rated voltage |
6KV/12KV/36KV |
Accuracy class |
0.5/0.2 and 0.5s/0.2s |
Rated voltage ratio |
6kv/100; 1k/100; 3300/100 |
Rated current ratio |
5-300/5 |
Note: The products may be custom manufactured to a higher ratio. |
Our Service
We have our own warehouses and repair points in some countries, and the after-sales service is more convenient and efficient.

Sufficient Trade Experience
Our company has been established for nearly 20 years. It is the first batch of electrical companies to enter the foreign trade industry, with customers all over the world.Therefore, we can solve any problems for you before, during and after sales with great experience.
About Us






FAQ
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