Current Transformer with DC immunity series is a star product. CT core is quite different from the traditional ones foreign CT manufacturers used to use. Its created and developed by our engineers after great efforts fews years ago. This kind of CT have been approved and purchased in bulk by national and international meter manufacturers.

CT is one of the key measurement components in the meter. The meter accuracy is decided by the CT accuracy. Oswell is always insisting on supplying high quality parts for the customers, so we pay more attention on the production and process control. We are the ISO9001-2008 company and always responsible for the quality.

As the electric meter is smarter, the components will be smarter and smarter. Some customers design the PCB with CT mounted, which will save some space for the meter. Therefore PCB-mounted type is very popular in the market. More and more meter manufacturers choose this type and match the busbar on their own.



★ Special double core structure. One core is for AC measurement, the other is for DC
★ AC measurement capacity is 20-30% higher than rated current
★ DC measurement capacity is more than 71% of the rated AC
★ High accuracy. Complitely suitable for high quality kWh meter with Class 0.5 or Class 1.0;
★ Typical meter measurement error with DC influence is within 0.5%-2% for 0.1 Class CT.
★ Small phase error. Typical phase shift is at 1-15’; Additional compensation not needed
★ Good insulation between Primary and Secondary, more than 3kV.
★ Very reliable and stable performance at different temperature conditions
★ Frequency: 50Hz/60Hz Ambient Temperature: -40℃--- +85℃
★ Many kinds of desirable bus-bars connected to the CT are available
★ ROHS Compliance is available on request

Model NO. Rated Current Turns Ratio Output Current Load Insulation Voltage Phase Error Accuracy
AC DC Class
DCT006P 6A 4.5A 1:2500 2.4mA 10/20Ω >3 kV, 1min <15 0.1
DCT100P 40A 30A 1:2500 20mA 12.5Ω >3 kV, 1min <15 0.1
DCT101P 60A 45A 1:2500 24mA 12.5Ω >3 kV, 1min <15 0.1
DCT104P 100A 75A 1:2500 40mA 10Ω >3 kV, 1min <30 0.2