Current Transformers

It is developed from the principle of electromagnetic induction and is composed of a closed core and windings.

Types of Current Transformers

Split Core Current Transformer

The appearance is nice and the installation and wiring are convenient. AKH-0.66/K-Φ series split current transformers are mainly used in reconstructing projects of urban and rural power grids.

Hall Sensors

Hall sensor is suitable for uninterruptible power supply (UPS), switching power supply (SMPS), welding machine, medical equipment, mobile communication equipment and other power supplies, elevators, f...

Measuring CT

The CT is used in conjunction with the primary current measuring range of 5-6300A, the secondary output is 5A or 1A.

DC meter current external access shunt 75mV

DC Current Shunts

Clamp on Current Transformer Working Principle

When the equipment is running close to a short circuit, the primary large current can be converted into a small current according to the set value, and then to the secondary meter, The relay protection provides energy for measurement. "

Current Transformer Formula

I(P) = Primary current in Amps

I(s) = Secondary current in Amps

CT ratio formula:

CT ratio = I(P) / I(s) ————-1

Example: 1000:1. Here 1000 means it is a primary current and 1 means secondary current. Also, we can have rewritten as 1000/1.

CT secondary current will be always 1 or 5 to get easy calculation as well as we can create small rating secondary circuits to withstand up to 5 Amps.

Established in 2003, Acrel Co, Ltd. (Stock Code: 300286. SZ) is a high-tech enterprise concentrating on research, production, sales, and services. It mainly provides systemic solutions of energy efficiency management and electrical safety for users. Acrel smart meter manufacturer is equipped with complete production lines from cloud platform software to sensors.

If you want to buy three phase energy meter, please contact us.