Metallurgy

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Electrical tests for metallurgical enterprises are conducted to verify insulation performance and electrical reliability, identify potential faults, and ensure safe, stable power supply for smelting and production equipment.

Test Objects (Tested Specimens)	Test Items	IEC Standards	ANSI/IEEE Standards
Arc Furnace Transformers	Winding Resistance Measurement, Voltage Ratio & Phase Displacement Test, Insulation Resistance Test, Dielectric Loss Test, Short-Circuit Withstand Test, Temperature Rise Test, Partial Discharge Test	IEC 60076-1, IEC 60076-2, IEC 60076-5, IEC 60076-11	IEEE Std C57.12.00, IEEE Std C57.12.90, IEEE Std C57.104, IEEE Std C57.13
Induction Furnace Motors	Stator & Rotor Winding Resistance Test, Insulation Resistance Test, No-Load Test, Load Test, Temperature Rise Test, Vibration Test, Insulation Withstand Voltage Test	IEC 60034-1, IEC 60034-2, IEC 60034-5, IEC 60060-1	IEEE Std 115, IEEE Std 118, IEEE Std 56, IEEE Std C50.41
Metallurgical Power Converters	Input/Output Voltage & Current Test, Efficiency Test, Harmonic Distortion Test, Overload Protection Test, Short-Circuit Protection Test, EMC Test, Voltage Regulation Test	IEC 61800-1, IEC 61800-4, IEC 61000-4, IEC 62933	IEEE Std 519, IEEE Std 1547, IEEE Std 62933, IEEE Std 1262
Current/Voltage Transformers (CT/VT)	Ratio Error & Phase Error Test, Insulation Resistance Test, Dielectric Withstand Test, Polarity Test, Excitation Characteristic Test, Partial Discharge Test	IEC 60044-1, IEC 60044-2, IEC 61869-1, IEC 60060-1	IEEE Std C57.13, IEEE Std C57.13.1, IEEE Std C57.13.6, IEEE Std C37.2
High-Voltage Power Cables (Metallurgical Grade)	Conductor Resistance Measurement, Insulation Resistance Test, AC Withstand Voltage Test, Partial Discharge Test, Thermal Aging Test, Flame Retardancy Test, Abrasion Resistance Test	IEC 60502-1, IEC 60840, IEC 60228, IEC 60332	IEEE Std 400, IEEE Std 400.2, IEEE Std 575, IEEE Std 1202
Surge Arresters (Metallurgical System)	Insulation Resistance Test, Leakage Current Measurement, Lightning Impulse Withstand Test, Operating Voltage Test, Thermal Stability Test, EMC Test	IEC 60099-4, IEC 60099-6, IEC 61000-4, IEC 62271-1	IEEE Std C62.11, IEEE Std C62.22, IEEE Std C37.20.1, IEEE Std 1262
Protective Relays & Control Systems	Relay Function Test, Setting Value Calibration, Tripping Time Test, Interlocking Test, Fault Diagnosis Test, Communication Test with Control System	IEC 61850, IEC 60255, IEC 61508, IEC 62271-100	IEEE Std C37.2, IEEE Std C37.90, IEEE Std C37.10, IEEE Std 1547
Metallurgical Switchgear	Insulation Resistance Test, Dielectric Withstand Voltage Test, Contact Resistance Measurement, Mechanical Operation Test, Interlocking Test, Short-Circuit Test	IEC 62271-1, IEC 62271-100, IEC 61439-1, IEC 60060-1	IEEE Std C37.06, IEEE Std C37.20.1, IEEE Std C37.10, IEEE Std 48
Insulating Oil (Metallurgical Equipment)	Breakdown Voltage Test, Moisture Content Test, Dissolved Gas Analysis (DGA), Viscosity Test, Acid Number Test, Oxidation Stability Test	IEC 60156, IEC 60814, IEC 60567, IEC 60296	ASTM D877, ASTM D1533, ASTM D3612, ASTM D974
Rolling Mill Motors	Winding Resistance Measurement, Insulation Resistance Test, No-Load Current Test, Load Test, Temperature Rise Test, Speed Control Test, Vibration & Noise Measurement	IEC 60034-1, IEC 60034-2, IEC 60034-5, IEC 60060-1	IEEE Std 115, IEEE Std C50.41, IEEE Std 118, IEEE Std 56