22kV Air Insulated Switchgear AIS Air Insulated SM6 with SF6 load break switch Ring Main Unit
24kV Air Insulated Switchgear
Standards
IEC 62271-100 high voltage alternating current circuit breakers
IEC 62271-105: alternating current switch-fuse Combination
IEC 62271-102: alternating current disconnectors and earthing switches
IEC 62271-200 A.C. metal enclosed switchgear and controlgear for rated voltage above 1 kV and up to and including 52 kV
IEC 62271-103 high voltage switches for rated voltage above 1 kV and less than 52 kV
IEC 60694: Common specifications for high-voltage switchgear and controlgear standards
IEC 60265-1 Switches for rated voltages above 1 kV and less than 52 kV
IEC 60529: Degrees of protection provided by enclosures (IP Code)
Service environment:
a) Air temperature:Maximum temperature: +40℃; Minimum temperature:-25℃
b) Humidity:Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level:Maximum installation altitude: 2500m
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
e) No frequent violent shake
SafeSwitch is an air insulated (AIS), metal enclosed, switchgear cubicle. It is suitable for electric distribution automation and compact also expandable metal close switchgear. It characters in its simple structure, flexible operation, reliable interlocking and convenient installation etc., which can provide the satisfactory technical projects both for different application occasions and users.
With the adoption of sensor technology and the protection relay up to date, plus the advanced technology and flexible assembly project, SafeSwitch can completely meet the requirement of continuously variable market.
SafeSwitch can take SF6 load break switch; also according to user's demand can be assembled with the vacuum circuit breaker. Operational methods can be either manual or motor driven.
1 Load Switch: Load switch and earthing switch in an enclosure filled with SF6 and satisfying "sealed pressure system" requirements.
2 Busbars: all in the same horizontal plane, thus enabling later switchboard
extensions and connection to existing equipment.
3 Connection: accessible through front, connection to the lower load switch and earthing switch terminalsor the lower fuse-holders. This compartment is also equipped with an earthing switch downstreamfrom the MV fuses for the protection units.
4 Operating mechanism: contains the elements used to operate the load switch and earthing switch and actuate the corresponding indications
(positive break).
5 Low voltage: installation of a terminal block (if motor option installed), LV fuses and compact relay devices.
If more space is required, an additional enclosure may be added on top of the cubicle.
Why choose us
| Hunan Electric Union is a diverse electric equipment manufacturer group located in middle south of China. |
| Limit Innovation |
| We are in a traditional business since transformers and switches are developed over hundred years, even the so called “new technologies” of cast resin technology, vacuum arc distinguish technology and digital protection technology have been used for decades. Based on industry characteristics and to focus on products manufacturing itself, we implement a “limit innovation” policy on our mature products |
| 1. Update products only if latest standards revision officially issued 2. Produce new products only if related technology are maturely developed. 3. Focus limit innovation on external updates to make products easy to use and transport. |
| Our Mission |
Eventually, we could help the developing regions to update their energy quality and improve people’s life. |
Products 2. Gas insulated switchgear (GIS) 72.5-252kV 11. Compact Substation |
Services |
| Products Features We defined four rules to estimate our products, 1. Standards: All products should comply with IEC or IEEE standard codes. 2. Requirements: All products should comply with technical agreement from end user. 3. Easy to Use: All products should tested in factory and deliver with full, readable drawings and manuals. 4. Fit to Container: All products should designed to load on a container. |
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