200 1-NPD+, a new digital control and protection system for series compensation capacitor bank (SC)
2000-27 ... 5kV high voltage thyristor switching filter bank for electrified railway.
2000- a new digital SVC control and protection system.
2000- reactor plastic insulation treatment technology and transposition aluminum conductor structure.
2000- New Low Voltage Shunt Active Power Filter
2000- Outdoor installation (IP54, shell material SUS 305) low-voltage metallized full-film dry self-healing functional capacitor.
1999- Three-phase four-wire low-voltage third harmonic filter
1999- world patent for low-voltage capacitor discharge device.
1997- measurement electronic system powered by laser on the insulated platform of series capacitor bank (SC)
1995- Self-supporting thyristor valve group newly designed for SVC.
1995- patented low-voltage shunt active filter
1994- plastic insulation treatment technology for reactor and transposed aluminum conductor structure
1994- world patent for low-voltage capacitors using internal fuse protection elements.
1994- series compensation capacitor bank (SC), full digital control and protection system NPD and remote control terminal device are adopted.
(RTU) and global positioning system (GPS). The function of GPS is to acquire and synchronize the running time.
Fault location record
1989- Forced trigger spark gap and metal oxide varistor protection system for series compensation capacitor bank (SC)
1989- patented reactor insulation treatment process and transposed aluminum conductor structure.
1988- The maximum single capacity of the new high-voltage capacitor with built-in fuse is 1000KVAR.
1985- The fast digital acquisition system is used to measure the current of series compensation capacitor bank (SC).
198 1 year-adopts full-film dielectric high-voltage capacitor.
198 1 year-the low-voltage capacitor is insulated with metallized polypropylene film, dried and self-healed.
1980-SVC is used for voltage support of 330kV power grid.
1979- low voltage thyristor switching (filtering) capacitor bank
1978- the first set of 735KV, 350MVAR(60HZ), No.5 &; The seventh group of double-tuned harmonic filters
1977- Complete set 10KV TCR(36MVA) Static Var Compensation Device (SVC) delivered to the steel plant.
1975- production of the world's largest capacity shunt capacitor bank 275KV/ 150MVAR.
1975- The world's first series capacitor bank (SC) with nonlinear resistance protection.
1975—— The world's first low-voltage harmonic filter leaves the factory.
1974- Optical fiber signal transmission system with series capacitor bank (SC)
197 1 year-Static discrete components are used to protect relays on the insulated platform of series capacitor bank (SC).
1970- began to manufacture resin die-casting air-core reactor.
1970- welded porcelain bushing used for high voltage capacitor.
1970- the high-voltage capacitor is made of nonmagnetic material with stainless steel casing (AISI-409) to avoid hysteresis loss.
And can prevent the capacitor shell from cracking and leaking oil due to thermal expansion and cold contraction.
1964- application of optical signal transmission system and static diSCrete component control system in series capacitor bank (sc)
1964—— The world's first series compensation capacitor bank (SC) for 400KV transmission system.
1960- Start production of high-voltage air-core reactor.
1960- a world patent for using internal fuse protection elements of high-voltage capacitors.