Efficacia electrica
| UNITAS | YH5WZ-10/27 | YH5WZ-10/30 | YH5WZ-10/36 | YH5WZ-10/45 | YH5WZ-10/50 | |
| Tensio nominalis systematis | KV | 6 | 6 | 10 | 15 | 15 | 
| Tensio nominalis compressoris | KV | 10 | 10 | 13 | 17 | 17 | 
| Tensio operativa continua | KV | 8.0 | 8.0 | 10.4 | 13.6 | 13.6 | 
| Tensio referentialis DC 1mA | ≥kV | 15.0 | 15.0 | 19.3 | 24 | 25 | 
| Undae praeruptae pressionem residuam afficiunt | ≤kV | 34.6 | 34.6 | 41.3 | 51.8 | 57.5 | 
| Tensio residua impactus fulminis | ≤kV | 30.0 | 30.0 | 36.0 | 45 | 50 | 
| Pressio residua impactus operandi | ≤kV | 25.6 | 25.6 | 30.7 | 35 | 42.5 | 
| Tolerantia impactus undae quadratae | A | 75 | 75 | CL | CL | centum | 
| Tolerantia impactus currentis altae | KA | 65 | 65 | 65 | 65 | 65 |