Scope of Application
This specification suitable for 50Hz multi-functional electronic electric energy meter, anti-stealing electric meter, digital meter, smart energy meter also be used for transducer electric variables, remote control data acquisition system, digital relay protection, digital device, energy meter and smart meters.
Applicable conditions:
- Environment temperature:-40 ℃ ~ 85 ℃, relative humidity 95%;
- Altitude: not more than 1000m;
- Atmospheric conditions: no serious impact on transformer insulating gas, steam, chemical deposition, dirt and other corrosive, explosive medium.
Technical requirements:
It accords with IEC-60044-1 0.1class, Suitable for Meter standard IS13779
Current transformer specifications
Technical parameters are shown below:
| Characteristic |
Parameter |
| Working Frequency |
50-60Hz |
| Turn Ratio |
1:2500 (+/- 2%) |
| Overload current |
Imax x 1.5 |
| DC and even harmonics |
Imax/√2 as per IEC 62053-21, IEC 62053-23，1inductive , error should be less than ±3%@PF=1.0 |
| Copper Winding |
SWG 38- 41 |
| Dielectric resistance |
4 kVrms for 1 min. |
| Core Details |
Fe BASED NANO CRYSTALLINE & AMORPHOUS Hybrid Core. |
| Accuracy Class |
0.1-0.5 |
| Insulation Withstand |
4000V 50Hz/60 Sec, leakage current <1mA |
| Magnetic immunity EN50470-3 |
a. To Continuous magnetic fields of external origin.
b. To Power frequency magnetic fields of external origin 0.5 mT
c. To DC strong magnet 1.2 T Neodymium NeoDeltaMagnet (NdFeB), with surface residual magnetism Br=500mT. The distance from magnet to CT body is approx. 25mm
|
| Secondary Wire |
PVC or PTFE as per Customer. |
| UL / ROHS |
Compliance |
| Current (Ratio) Error % |
Phase (angle) Error % |
| % of rated current |
% of rated current |
| 5% |
20% |
100% |
100% |
100% |
20% |
100% |
Imax |
| -0.4~+0.4 |
-0.2~+0.2 |
-0.1~+0.1 |
-0.1~+0.1 |
-15~+15 |
-13~+13 |
-10~+10 |
-8~+8 |
Standard Range of CT:
| Current Rating (A) |
Max OD [A] (mm) |
Min ID [B] (mm) |
Max Ht [C] (mm) |
Wire length [D] (mm) |
DC immune |
Magnet Shield |
Primary BusBar |
| 5-10A |
24.5 |
6.5 |
14 |
100 |
No |
No |
No |
| 5-30A |
29 |
8 |
16 |
100 |
Yes |
No |
No |
| 5-60A |
31 |
9.5 |
16 |
100 |
Yes |
No |
Yes |
| 5-60A |
36 |
9.5 |
22 |
100 |
Yes |
Yes |
No |
| 5-80A |
26.5 |
8 |
11 |
100 |
No |
No |
Yes |
| 5-100A |
36.5 |
10.5 |
23 |
100 |
Yes |
Yes |
No |
| 5-120A |
42.5 |
11.5 |
23 |
100 |
Yes |
Yes |
No |
| 5-200A |
79.5 |
39.5 |
28 |
150 |
Yes |
Yes |
No |
| 5-320A |
46 |
26 |
14 |
150 |
No |
No |
No |
Optional Customer Specific:
- Secondary Wire color code : Red & Black or as per requirement (Red wire in Phase with primary current direction)
- Secondary Wire type :PVC or PTFE
- Secondary Wire Twist or straight as per customer.
- Secondary Wire Insulation Sleeve as per customer.
- Secondary Wire Length : As per customer requirement.
- CT Identification : Make, Manufacturing date, Drawing no. Or As per customer requirement.
- Lead Type or connector Type as per customer requirement.
- CT Mounting slot : As per customer requirement.
- CT Secondary: PCB mounting type or Lead type as per customer requirement.
