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 ofCT have been approved and purchased in bulk by national and international meter manufacturers.

CTis one of the key measurement components in the meter.The meter accuracyis 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 andprocess control. We are the ISO9001-2008 company and always responsible for the quality.

Busbartype is made to suit for different types of terminal block in the meter. The busbar will be crossed to the CT core and fixed by high temperaturecompound filling material (up to 120℃), so that the productionwill be very easy. The cost and labor force for customerswillbe saved a lot.
There are two types of mounting for this type:
1, mounted with screws on the terminal directly,
2, inserted into the cage terminal holes and then mounted with screws.

★ Special double core structure. One core is for AC measurement, the other is for DC
★ AC measurement capacity is 20-30% higher thanrated current
★ DC measurement capacity is more than 71% of therated AC
★ High accuracy. Complitelysuitable forhigh quality kWh meter withClass 0.5 or Class 1.0;
★ Typical meter measurement errorwith DC influence iswithin 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-barsconnected tothe CTare available
★ ROHS Complianceis available on request

Model NO. Rated Current Turns Ratio Output Current Load Insulation Voltage PhaseError Accuracy
AC DC Class
DCT206 6A 4.5A 1:2500 2.4mA 10/20Ω >3 kV, 1min <15 0.1
DCT105 40A 30A 1:2500 20mA 12.5Ω >3 kV, 1min <15 0.1
DCT106 60A 45A 1:2500 24mA 12.5Ω >3 kV, 1min <15 0.1
DCT107 80A 60A 1:2500 32mA 12.5Ω >3 kV, 1min <15 0.1
DCT108 100A 75A 1:2500 40mA 12.5Ω >3 kV, 1min <15 0.1
DCT109 120A 85A 1:2500 48mA 12.5Ω >3 kV, 1min <15 0.1
DCT200BG 200A 145A 1:4000 50mA >3 kV, 1min <30 0.2