IEC 61439-5 Static Load Test Bench for Switchgear Enclosure Mechanical Strength Testing Product Information This static load test bench mainly used for mechanical loading tests and related research tests of low-voltage metering boxes, prefabricated substations and electrical equipment enclosures. It can conveniently conduct mechanical property tests on various types of metering boxes, including metal metering boxes, non-metallic metering boxes and cable distribution boxes. It