Scope of Application
This specification suitable for 50Hz multi-functional electronic electric energy meter, anti-stealing electric meter, digital meter, also be used for transducer electric variables, remote control data acquisition system, digital relay protection, digital device and 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.
