PTX+B+B+B+B+PT
Multi-CB combination with dual incoming PT unit
Application Scenarios
Suitable for terminal distribution systems requiring dual power supply access; it monitors voltage status of dual incoming feeders to facilitate automatic dual-power switching.
Applicable to sites demanding high power supply reliability, such as hospitals, commercial centers, research institutions and industrial consumers.
Can be installed inside distribution rooms and outdoor switch cabinets.
Core Features
Supports busbar extension for future capacity expansion.
Capable of breaking short-circuit currents to minimize outage areas.
Enables automatic dual-power switching to improve power supply reliability. The busbar PT provides voltage for measurement and operating power for secondary circuits.
Can be fitted with integrated protection relays or automation terminals to meet automation requirements for smart distribution networks.
Main Parameters
| Rated Voltage | 12kV & 24kV |
| Rated Current | 630A & 1250A |
| Rated Short-circuit breaking Current | 20kA / 25kA |
| Dimension (W × D × H) | 12kV: 3040×800×1640 24kV: 3640 ×850×1890 Dimensions without secondary top box Note: Take 630A product as an example |
| Design life | 40 years |
| Optional Accessories | • Surge arresters • Electrical and mechanical interlocks to realise dual-power automatic transfer switching • EKL4 short-circuit & earth fault indicator • Tripping coil 1: AC230V / DC48V / DC110V • Tripping coil 2: Under-voltage release coil, AC230V |
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