ZN85-40.5 PT Trolley for 1200mm Width KYN61 Switchgear – Dedicated Potential Transformer Handcart
The ZN85-40.5 PT Trolley is a specialized handcart designed specifically for 1200mm width KYN61 switchgear systems. Unlike standard vacuum circuit breakers, this trolley is dedicated to holding and moving Potential Transformers (PT) and does not feature an integrated operating mechanism. Built with high-quality steel alloy components, it offers superior corrosion resistance (withstanding over 350 hours of neutral salt spray tests) and features a maintenance-free composite insulation design. It is the ideal solution for voltage monitoring and measurement within 40.5kV power distribution networks.
Product Overview
The ZN85-40.5 PT Trolley is a high-precision handcart specifically designed for 1200mm width KYN61-40.5 switchgear or similar high-voltage electrical models. Unlike standard vacuum circuit breakers, this trolley is a dedicated platform for housing and maneuvering Potential Transformers (PT) and does not contain an integrated operating mechanism for switching or protection. It serves as a critical component in power plants and substations by providing a smooth, secure method for the insertion and removal of PTs, which are essential for system voltage measurement and protection.
Key Features
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Switchgear Compatibility: Precision-engineered to fit seamlessly into 1200mm width high-voltage switchgear systems.
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Safety & Interlocking: Features advanced mechanisms to prevent misoperation, ensuring maximum safety for personnel during PT removal or maintenance.
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Reliable Standards: Fully adheres to international and national safety and performance specifications, including IEC 62271 and GB/T 11022.
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Durable Construction: Designed for efficient operation in demanding industrial environments without interrupting power distribution.
Technical Standards
| Item | Specification |
| Rated Voltage | 40.5 kV |
| Power Frequency Withstand Voltage | 95 kV |
| Lightning Impulse Withstand Voltage | 185 kV |
Applicable Environments
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Temperature Range: -40°C to +40°C.
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Maximum Altitude: ≤ 1000 meters.
Primary Function in Power Systems
This PT trolley provides scaled-down voltage readings to control systems, which is crucial for accurate voltage measurement, overload protection, and ensuring overall electrical safety during routine system maintenance. Its specialized handcart design allows for efficient system operation by facilitating the movement of potential transformers without the need for complex internal switching components.
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