Dimension: 43*19*30(mm)
Rated Primary Current(A) 2.5 5 10 20
Rated Secondary Current(mA): 2.5 2.5 5 10
Rated Load(Ohm): 40 20 20 10
Accuracy Class: . 01 0.2.05
Max Current: 40 40 60 80
Rated Frequency(Hz): 50/60
Inxulation Resistance (Mohm): ≥ 10
Dielectric (VAC): ≥ 3000
Ambient Temperature: - 40~+70C°
Listing Description Current Transformer
Used in wide-range electronic-type electric energy meters and measurement instrument.
Detailed Description Current Transformer
A. Application:
Used in wide-range electronic-type electric energy meters and measurement instrument.
B. Normal working condition:
1. Ambient temperature: 25 ~~ 40; Humidity: < 90%(at 25); Altitude: < 1000m;
2. Voltage rating: 500V; Wave shape: Sinusoidal wave; Distortion factor ≤ 5%;
3. No severe shaking and jolting;
4. No un-relating external strong electromagnetic field.
C. General spec.
D. Insulation intensity:
The insulation property currentinductors primary winding countering second winding and countering earth part can bear frequency voltage 3000V lasting 1 minute.
@Turnto turn insulation intensity.
Open the circuit of second winding, charge primary winding with an fixed electric current and maintain 1 minute, no damage of insulation occurred between turns in the inductors;
@Insulation resistance.
The insulation resistance rating between primary winding and second winding of inductor shall not more than 50 M??;
Polarity
The polarity of current-inductor is subtractive polarity, that is: When current in primary winding enters through L1 point, the current in the second winding inflows external return circuit through K1 point. ( according to the drawing )
@Current-inductors error:
Specific value difference and angular difference can be checked by current-mutual- inductor tester, the error limitations are as follows: