AT series voltage conversion device is the core conversion equipment in power equipment test stations, used to convert test power supplies to different voltage levels or distribute power to different test circuits. Main applications include:

MV-side circuit conversion for transformer short-circuit, temperature rise and load loss tests

Power connection and conversion for MV switchgear and circuit breaker dynamic/thermal stability tests

MV test wiring conversion for generators, motors, variable frequency drives and UPS

Combined switching and voltage matching of capacitor banks, reactors and resistive loads

Unified conversion hub for multi-voltage-level (6kV/10kV/35kV) test platforms

Power distribution, isolation and protection between different test stations

Three-phase independent structure: Left, center and right columns, each phase conductive circuit independently insulated with sufficient phase-to-phase clearance

Insulator support: HV conductive busbars supported by porcelain or composite insulators, meeting MV insulation requirements

Multi-position changeover switch: Each phase equipped with multi-position knife switch or changeover switch for safe switching between different voltage levels/circuits

Three-phase color-coded busbars: Red, yellow and green phase colors for easy on-site identification and wiring

Optional current-limiting reactor: Internal air-core or iron-core reactor can be integrated to limit inrush current during short-circuit tests

Steel frame base: Welded frame structure, stable, easy for lifting, transport and installation

Mechanical/electrical interlock: Interlocks at critical switching positions to prevent on-load misoperation

Visible breaking gap: Switch breaking gap visible for confirming isolation status and ensuring test safety

10kV transformer test station: Choose 12kV rated voltage, 1000A-3000A rated current, 31.5kA short-time withstand

35kV transformer test station: Choose 40.5kV rated voltage, 2000A-5000A rated current, 50kA-80kA short-time withstand

High-capacity short-circuit test: Optional current-limiting reactor (4%-8% reactance) to reduce impact on upstream power supply

Multi-voltage compatibility: Choose 3-4 position changeover switch to cover 6kV/10kV/35kV

Frequent operation: Choose electric operating mechanism with remote control interface

Outdoor test station: Choose IP54 protection, anti-pollution flashover insulators