The LZZB-36 current transformer is a 36kV indoor single-phase epoxy resin casting device featuring a fully enclosed support structure. It is designed with three secondary windings, each capable of being tapped, providing versatile measurement and protection options. The epoxy resin body ensures robust insulation and mechanical strength.
This product offers a large creepage distance on the external insulation surface, enabling it to withstand pollution, ultraviolet radiation, and harsh environmental conditions. It is ideally suited for pairing with outdoor 36kV (up to 40.5kV) sulfur hexafluoride (SF6) circuit breakers for measuring electric energy, current, and protective relaying. The transformer complies with IEC 60044-1 and IEC 61869-1 & 2 standards.
Rated transformer Ratio(A) | Accuracy classes combination | Rated output(VA) COSφ=0.8 |
FS | ALF | Rated short-time thermal current( kA/S) | Rated dynamic current(kA) | ||
Measuring | Protective | |||||||
0.2(S) | 0.5 | 10P | ||||||
30-200/5 | 0.2(S)/0.2(S) 0.2(S)/0.5 0.2(S)/10P 0.5/10P |
15 20 |
20 25 |
25 30 |
5 (10) |
10 15 20 |
200l1n | 500l1n |
300/5 | 45 | 100 | ||||||
400/5 | 63 | 125 | ||||||
500/5 | 63 | 125 | ||||||
600/5 | 80 | 160 | ||||||
800/5 | 80 | 160 | ||||||
1000/5 | 100 | 160 | ||||||
1250/5 | 100 | 160 |
Rated transformer Ratio(A) | Accuracy classes combination | Rated output(VA) COSφ=0.8 |
FS | ALF | Rated short-time thermal current( kA/S) | Rated dynamic current(kA) | ||
Measuring | Protective | |||||||
0.2(S) | 0.5 | 10P | ||||||
30-60/5 | 0.2(S)/0.2(S) 0.2(S)/0.5 0.2(S)/10P 0.5/10P |
15 20 |
20 25 |
25 30 |
5 (10) |
10 15 20 |
2 | 5 |
50-100/5 | 8 | 20 | ||||||
100-200/5 | 15 | 37.5 | ||||||
200-400/5 | 30 | 75 | ||||||
400-800/5 | 63 | 130 | ||||||
500-1000/5 | 63 | 130 | ||||||
600-1200/5 | 80 | 160 | ||||||
750-1500/5 | 100 | 160 |