Sigma Laboratory Tec. is a comprehensive independent testing laboratory based in the United Kingdom, providing testing, certification, and technical evaluation services for a wide range of electrical and power transmission products.
Its testing capabilities cover low-voltage switchgear and controlgear, low-voltage fuses, miniature circuit breakers, residual current circuit breakers, surge protective devices, electrical accessories, reactive power compensation systems, compensation controllers, cable management systems, prefabricated substations, DC power supply equipment, and related assembly components.
The laboratory supports a broad range of international certification schemes, including IEC CB certification, CE marking, UKCA certification, and other globally recognized conformity assessment programs.
The laboratory further undertakes quality supervision, inspection services, commissioning tests, and technical evaluation projects authorized by regulatory authorities, administrative bodies, and research institutions.
Test port – own domestic advanced short-circuit test technique; can provide multi testing ports for different voltage grades, perform short-circuit test items for more than 10 samples simultaneously, and carry out performance test to low-voltage electric apparatus under full working condition.
Short circuit test---three-phase 1800V、500kA
DC: 440V、320kA 12kV,175kA
Temperature rise test—long term test current 35kA, short time test current 120kA (symmetrical wave)
Electrical endurance test—can carry out durability test of electrical apparatus, of which when A.C contactor is put in the electrical endurance test under the condition of AC-3, AC-4, while the maximum rated voltage reaching 690V, and the maximum rated current can reach 800A
Environmental Test – can perform high and low temperature test, humid heat test, salt spray test, IP test upon electric apparatus, and the volume of dust-proof test box is 420m³， which could conduct IP test in the range of IP00-IP68
Mechanical Test—can perform shock vibration test, impact test, tilt and sway test, pull test, bending test and torsion test
Sliding contact type bus way test—can do performance test for sliding contact type bus way under the dual operating conditions (voltage, current), the regulating ranges of voltage and current are wide, the test precision and efficicency is high
Corrosion resistance test---sulfur dioxide accelerated corrosion test for protective layer of metal materials, components and electron device
UV test---to adopt the xenon arc lamp which can simulate the whole spectrum of sunlight to reproduce the destructive wave in different environments, and can provide corresponding environmental simulation and accelerated test for R&D, and quality control of assemblies
Power harmonic and filtering detection ---- under the condition with harmonic source, to test the suppression harmonic and filtering functions for assemblies with those functions
