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Cubicle-type Gas Insulated Switchgear (C-GIS)
24kV Cubicle-type Gas Insulated Switchgear Type HS-X
Construction
Mitsubishi Electric Corporation has designed and manufactured a substantial amount of high quality switchgear all over the world. This vast experience was drawn on to produce the next generation of advanced environmentally friendly switchgear, the ”HS-X”.
Features
High reliability - Years of trouble free operation
The reliability has been increased even further by the application of an electro-magnetic vacuum
circuit breaker (VCB) operating mechanism. With fewer parts*1 the chances of failures occurring
have decreased.
*1: 35% less parts than conventional Mitsubishi Electric spring VCB operating mechanism.
Safe Design - Ensures operator’s safety
In the event of an internal arc, any arc fault gas will be directed away from the operator (through the top of the panel). With the benefit of GIS design concepts, there are no live parts exposed inside the panel which ensures utmost safety for operators.
Low maintenance - Reduction of maintenance costs
The circuit breaker’s advanced electro-magnetic operation does not require maintenance for over
15 years*2. The circuit breaker and disconnecting / earthing switch are hermetically sealed in a
tank and together with the application of original anti-oxidation grease to the moving parts of
the disconnecting / earthing switch enable smooth long-term operation for 15 years or more.
*2: Under normal operation conditions according to IEC standard.
Environmentally friendly - SF6 Free
Mitsubishi Electric Co. is the world leader in establishing compressed dry air insulation technology based on the design and development technologies of conventional SF6 switchgear. Under dry, clean and compression, air has good insulation properties, which makes it ideally suitable to be used as insulation for gas insulated switchgear. (Dry air insulation is an option)
Energy saving - Reduction of running costs
The use of an electro-magnetic VCB operating mechanism reduces the required operation energy by approximately 80% when compared to conventional motor-spring operating mechanisms.
Compact size - Space saving
The weight and required space for installation has been reduced*3 by the use of solid insulated
busbars and the application of a multi-function relay.
User friendly - Simple operation
A simple layout of the operating mechanisms and mimic diagram at the front of the panel leads to straightforward operation. Additionally this reduces the chance of maloperation.
Simple installation - Quick and easy
No gas processing is required during site installation and commissioning, which simplifies planning and reduces time required for installation, and maintains the high quality of the switchgear during transportation.
Flexible design - Suitable for many applications
Flexible design - Suitable for many applications Designed so that several orientations of cable terminations (power and control) entry are available, makes it one of the most flexible switchgear on the market.
High reliability - Years of trouble free operation
The reliability has been increased even further by the application of an electro-magnetic vacuum
circuit breaker (VCB) operating mechanism. With fewer parts*4 the chances of failures occurring
have decreased.
*4: 35% less parts than conventional Mitsubishi Electric spring VCB operating mechanism.
Specification
GENERAL
| Type | HS-X | |
|---|---|---|
| Standard | IEC 62271-200（*1） | |
| Rated voltage(kV) | 12 | 24 |
| Rated frequency(Hz) | 50/60 | |
| Rated nominal current of main busbars (A) | 630/1250 | |
| Rated insulation level LIWV (kV) peak | 75 | 125 |
| Rated insulation level AC(1min) (kV) rms | 28 | 50 |
| Rated short-time withstand current (kA) | 25 | |
| Rated duration of short-time current (sec) | 3 | |
| Insulation medium | SF6/Dry air（*2） | |
| Rated gas pressure（*1）(MPa-abs) | SF6 : 0.13 |
SF6 : 0.13 |
| Dry air : 0.17 |
Dry air : 0.17 |
|
| Alarm gas pressure（*1） (MPa-abs) | SF6 : 0.12 | SF6 : 0.12 |
| Dry air : 0.15 | Dry air : 0.15 | |
- *1 The application standard is for 630A rating with dry air only. Others are IEC 60298.
- *2 Insulation medium of dry air is an option and for 630A rating only.