Import 3 Phase Secondary Injection Tester — Buy in Bulk from Supplier in China

The 3 Phase Secondary Injection Tester from Chongqing Gold Mechanical&electrical Equipment Co., Ltd. is a precision device designed for testing traditional relays, protectors, and modern microcomputer relays, with a particular focus on transformer differential protection and transfer equipment. It delivers standard 4-phase voltage and 3-phase current output, with voltage rated at 125V per phase and current at 40A per phase; 3 phases in parallel can achieve up to 120A. The unit is controlled by a Digital Signal Processor Microcomputer and complies with the technical standard DL/T624-1997 for relay computer test devices.

Constructed for high-precision electrical testing, the tester supports a wide frequency range of 0 to 1000Hz with an accuracy of 0.001Hz, and harmonic testing from the 2nd to the 20th order with phase accuracy of 0.1 degrees. Its AC current source provides 0 to 40A per phase with 0.5 percent accuracy, while the DC current source ranges from 0 to ±30A per phase, also at 0.5 percent accuracy. The AC voltage source outputs 0 to 125V per phase or 0 to 250V line-to-line, with power ratings of 75VA and 100VA respectively. DC voltage outputs span 0 to ±150V phase and 0 to ±300V line, with a maximum phase voltage output power of 970VA.

This tester is widely used by electrical utilities, industrial plants, and maintenance contractors for commissioning, routine testing, and troubleshooting of protection relays and schemes. It includes 8 pairs of switch input terminals and 4 pairs of switch output terminals, with a time measurement range of 1ms to 9999s and 1ms accuracy. The device operates on AC 220V ±10 percent at 50Hz, weighs 20 kg, and has dimensions of 455 mm x 530 mm x 220 mm, making it suitable for both lab and field applications.

Chongqing Gold Mechanical&electrical Equipment Co., Ltd. is based in Chongqing, China, with its office located at 9f, Jintai Building, Nanping, in the 400060 postal district. The company specializes in electrical testing equipment and provides technical solutions for relay protection and secondary injection testing, catering to utilities, industrial facilities, and maintenance providers.

The supplier offers pre-sale support, including responses to inquiries within 24 hours, factory visits, and the provision of technical datasheets and operation manuals for evaluation. Post-sale services include training on installation and usage at their factory, with engineers available for on-site service overseas at the customer's cost. The company holds a harbor trust tier and focuses on delivering equipment that meets industry standards for precision and reliability.