Testing Medium-Voltage Switchgear With Your Own Load Material
A buyer's guide to planning a switchgear demonstration around the buyer's actual material, with RFQ questions on withdrawable units, ratings, and acceptance checks.
Before accepting a demonstration of medium-voltage switchgear, decide whether the supplier will exercise the withdrawable unit with your own cable terminations, relay settings, and load profile rather than a generic test rig. That choice shapes what the demonstration actually proves about fit and operation in your distribution scheme.
Ask the supplier to state how the demonstration will reflect the 3.6–12 kV rated voltage range and the 630–5,000 A rated current range as reference values, and confirm which of those values the offered model is designed for. Will the withdrawable unit be racked in and out with your terminations fitted? Can your protection settings be loaded so interlocks and trip behavior are shown? What material or workpiece will be used, and how closely does it match your cable sizes and fault levels?
For an acceptance test, agree in advance on observable checks: racking force and alignment, shutter operation, mechanical interlocking, and continuity of the earthing arrangement. Record pass criteria in the RFQ so the demonstration is judged against your requirements, not the supplier's default.
Before requesting a quote, confirm with the supplier which rated voltage and current the offered metal-clad enclosure is built for, what test material will be used, and whether the demonstration can include your terminations and settings.