The ZJ Series Post Insulators are made from epoxy resin, designed for 11kV / 12kV power systems. They are widely used in indoor switchgear, circuit breakers, isolators, and medium voltage switchgear. This series offers excellent voltage resistance performance, with power frequency withstand voltage ranging from 38kV to 42kV and lightning impulse withstand voltage from 75kV to 85kV, effectively preventing insulation failure under high voltage conditions.
The insulators are available in various sizes, including φ65×130mm, φ65×140mm, φ80×150mm, and φ85×170mm, to meet the needs of different electrical equipment, ensuring the reliable operation of equipment in medium voltage power systems.
| Model | ZJ-11kV-12kV/φ65×130 (FN7) | ZJ-11kV-12kV/φ65×140 (FN7) | ZJ-11kV-12kV/φ80×150 | ZJ-11kV-12kV/φ85×170 |
| Dimensions | φ65×130 mm | φ65×140 mm | φ80×150 mm | φ85×170 mm |
| Rated Voltage | 11kV / 12kV | 11kV / 12kV | 11kV / 12kV | 11kV / 12kV |
| Rated Current | 630～1250A | 630～1250A | 1250A | 1600A |
| Power Frequency Withstand Voltage | 38kV | 38kV | 42kV | 42kV |
| Lightning Impulse Withstand Voltage | 75kV | 75kV | 85kV | 85kV |
| Material | Epoxy Resin | Epoxy Resin | Epoxy Resin | Epoxy Resin |
| Applicable Equipment | Indoor Switchgear | Indoor Switchgear | Circuit Breaker, Isolator | Medium Voltage Switchgear |
