Low voltage current transformer
(0.72kV, 50~60Hz)
Model:
LMZ-0.72, LMZK-0.72
(GSA,GSK)
1. Description:
Type LMZ-0.72, LMZK-0.72 (GSA,GSK) series current transformer is new type busbar straight-through current transformer, casting resin insulated, indoor product, it is used for the electrical system of 50~60Hz, rated voltage 0.72kV, as metering current, energy and relay protect.
LMZK-0.72 type current transformer is open-close type core, after open can pull-on busbar or cable.
If basbar or cable is full insulated, the transformer’s voltage level not limited, can reach to 35kV
The transformers can be executed according to the standards IEC44-1:1996 and GB1208-1997.
2. Technical data
2.1 type LMZ-0.72/□specification and parameter (cosφ＝0.8)
| Type and specification |
Rated primary Current
(A) |
Rated output(vA) |
Window size (mm) |
| Class 0.2 |
Class 0.5 |
| LMZ-0.72/42 |
100~300 |
5 |
10 |
Φ42 |
| LMZ-0.72/50 |
300~600 |
5 |
10 |
Φ50 |
| LMZ-0.72/65 |
750~800 |
5 |
10 |
Φ65 |
| LMZ-0.72/90 |
1000~1500 |
10 |
20 |
Φ90 |
| LMZ-0.72/110 |
1750~2500 |
10 |
20 |
Φ110 |
| LMZ-0.72/140 |
3000~4000 |
10 |
20 |
Φ140 |
2.2 type LMZK-0.72/□specification and parameter (cosφ＝0.8)
| Type and specification |
Rated primary Current
(A) |
Rated output(vA) |
Window size (mm) |
| Class 0.5 |
Class 1 |
| LMZK-0.72/50 |
500~600 |
5 |
10 |
Φ50 |
| LMZK-0.72/65 |
750~800 |
5 |
10 |
Φ65 |
| LMZK-0.72/90 |
1000~1500 |
10 |
20 |
Φ90 |
| LMZK-0.72/110 |
1750~2500 |
10 |
20 |
Φ110 |
| LMZK-0.72/140 |
3000~4000 |
10 |
20 |
Φ140 |
2.3 Rated secondary current is 5A or 1A | 
