Kian Tajhiz’s medium’s voltage GIS uses SF6 gas as its insulating material and includes circuit breaker, disconnector, and earthing switch in a sealed container for maximized reliability and safety.

Features

• Best technology
  • Adopts GIS technology accumulated from constructing a wide range of devices with wide ranges of voltage and current requirements


• Abundant 22kV GIS supply record


• Reliable components
  • Uses a spacer with AL2O3 material which has high-insulation characteristics
  • Uses tulip contactor which has proven its quality in the ultra-high voltage utility
  • Highly reliable VI is used


• Excellent construction capability
  • Various construction experiences
  • Specialized engineers (Solution Execution Team)
  • Quality assurance guaranteed from construction to maintenance

With rated voltage of 24~38kV, rated current of 1,250~3,150A, and maximum breaking current of 40kA, Kian Tajhiz ’s ProGIS is designed and manufactured to meet various specifications. We have acquired IEC, ANSI, and various international certifications to provide the optimal product that satisfies the global customer’s demands.

Features

• Safety is considered the top priority
  • Partitioning structure by bay
    Utilizes the partitions between the gas bays to prevent accidents in part of the facility from spreading to the entire facility.
  • 9T iron enclosure (VCB 28T)
    Uses an iron enclosure which has a melting point higher than an aluminum enclosure; risk of the enclosure melting by the internal arc is eliminated, and damage to the peripherals and human accidents are prevented.
  • Minimum gas pressure of 0.7kgf/cm2·G
    Pressure is maintained so that the risk of gas leakage, which may occur when gas pressure is high, is minimized.
  • Bellows installed at the tank connection unit
    Bellows maintain the mechanical safety of the system by absorbing the temperature change, errors in assembly, differences in the concrete base, and excessive displacement due to an earthquake.
  
  
  • Passed the Internal Arc Test
    Kian Tajhiz’s medium-voltage GIS was the first domestic manufacturer to pass the internal arc test in the medium voltage sector, reconfirming its high user safety.


• Convenience of users considered
  • Modulization of each unit
    Modulization of the busbar, circuit breaker, DS/ES, and PNL units allows for fast disassembly with minimum replacement of parts.
  • Uninterrupted power expansion
    Double busbar GIS can be expanded with uninterrupted power.


• First domestic design technology
  • Based on the technical know-how accumulated by developing ultra high-voltage GIS such as 362kV and 800kV, Kian Tajhiz  developed its GIS with state-of-the-art design technology such as
    three-dimentional electromagnetic field analysis, structure analysis, and thermal distribution analysis.


• Highly reliable products made from highly reliable materials
  • AI ₂ O ₃ (Alumina Oxide) insulation spacer
    The general epoxy filler includes Si, so when the SF6 gas meets with oxygen and moisture, they create a chemical reaction and the dielectric strength cannot be maintained. The AI ₂ O ₃ solves this problem.
  • Tulip contactor used for 154kV or higher
    Tulip contactor is used for easy installation and removal and solid contact.

Specifications

Specification
Specification Model	ProG 20625 S	ProG 21225 S	ProG 22025 S	ProG 20625 D	ProG 22025 D	ProG 21240	ProG 22540	ProG 23040	ProG 23140	ProG 31231	ProG 32531
Rated voltage(kV)	25.8	25.8	25.8	25.8	25.8	24	24	24	24	36	36
Rated current (A)	630	1,250	2,000	600	2,000	1,250	2,500	3,000	3,150	1,250	2,500
Rated short-circuit breaking current (kA)	25	25	25	25	25	40	40	40	40	31.5	31.5
Rated break time(Cycle)	5	5	5	5	5	5	5	5	5	5	5
Power frequency withstand voltage (kV)	70 (77)	70 (77)	70 (77)	70 (77)	70 (77)	70 (77)	70 (77)	70 (77)	70 (77)	70 (80)	70 (80)
Lightning impulse withstand voltage (kV)	150 (165)	150 (165)	150 (165)	150 (165)	150 (165)	150 (165)	150 (165)	150 (165)	150 (165)	170 (195)	170 (195)
Operation method	Motor driven /Manual	Motor driven /Manual	Motor driven /Manual	Motor driven /Manual	Motor driven /Manual	Motor driven /Manual	Motor driven /Manual	Motor driven /Manual	Motor driven /Manual	Motor driven /Manual	Motor driven /Manual
Width (mm)	550	550	600	600	600	700	700	700	700	600	600
Height (mm)	2,350	2,350	2,350	2,600	2,600	2,350 /2,700	2,350 /2,700	2,350 /2,700	2,350 /2,700	2,350	2,350
Depth (mm)	1,200	1,200	1,200	2,000	2,000	2,090	2,090	2,500	2,500	1,800	1,800
Rated gas pressure (kgf/㎠▪G)	1	1	1	1	1	1	1	1	1	1	1
Minimum gas pressure (kgf/㎠▪G)	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7
Section view
Note: Vales in the parenthesis are for the withstand voltage between DS poles
Note: The S and D at the end of the model name represent single or double bus

For the first time domestically, Kian Tajhiz’s ChanGIS passed the arc resistance test (International Arc) and its reputation as for quality, performance, and stability have spread to global customers. In addition to its numerous advantages, the ChanGIS is offered at a competitive price, making it optimal for buildings, condominiums, factories, public facilities, PV power facilities, and wind power facilities.

Features

 

Section	Switchgear	ChanGIS
Width	100%	25%
Depth	100%	64%
Height	100%	100%
Area	100%	16%