The Transformer Test Bench under Wuhan UHV can help many power workers conduct various power tests more conveniently.

An Electrical Test Bench is a comprehensive platform used for testing, verifying, diagnosing, and evaluating the performance of various electrical equipment, components, systems, or circuits. Its scope is broader than a Motor Test Bench, encompassing not just rotating machines (motors/generators), but also transformers, switchgear, circuit breakers, relays, contactors, controllers, power supplies, wiring harnesses, cables, electronic circuit boards, and even entire electrical systems.

Core Functions & Test Items

1.Performance Characterization:

Input/Output Characteristics (voltage regulation, load regulation, efficiency).

Start-up/Shut-down Characteristics.

Steady-State and Dynamic Response (e.g., response to load/input steps).

Power Factor Correction (PFC) Performance.

Output Ripple & Noise.

2.Safety & Compliance Testing:

Insulation Resistance Test: Verifies insulation integrity.

Dielectric Strength (Hipot) Test: Verifies insulation withstand capability (AC/DC/Impulse Hipot).

Ground Continuity Test: Ensures protective earth connection reliability.

Leakage Current Test: Assesses safety risk.

Arc Testing (for switchgear): Validates arc quenching and internal fault protection.

Ensuring compliance with standards (IEC, UL, CSA, GB, EN, etc.).

3.Functional Verification & Logic Testing:

Verifying operation logic and timing of relays, contactors, PLCs, protection devices.

Testing switch/breaker opening/closing characteristics, time-current curves.

Validating control circuit logic.

4.Protection Function Testing:

Testing threshold and response time of OV/UV/OC/SC/OT/phase-loss protection, etc.

Verifying relay protection settings and operating characteristics (distance, differential protection).

5.Environmental Testing:

Testing electrical performance under controlled temperature/humidity (e.g., temperature rise, cold start).

6.Durability & Life Testing:

Long-term operation, switching cycles, accelerated aging to assess reliability/lifespan.

7.Fault Diagnosis & Location:

Testing faulty equipment to analyze causes (e.g., short circuits, open circuits, component failure).

8.EMC Pre-Compliance Testing:

Basic conducted/radiated emissions and immunity pre-assessment (full EMC typically in specialized labs).