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GZS1 Type of indoor metal-clad draw-out switchgear

GZS1 indoor metal-clad draw-out switchgear, developed by Shanghai Dahua Electrical company, is suitable for use in AC. 3.6 ~ 12KV, 50Hz,single-busbar or sectioned single busbar switchgear, mainly used in Elec. generating plants, middle / small power stations, power distributing system of enterprises or industries or substations as Elec. power receiving or distributing equipment or big-power H. voltage motor starting equipment, and so on. The switchgear has functions of control, protection and monitoring

One important element of good power system design is the proper selection of the distribution equipment. The choice of using either switchgear or switchboards must be based on many different criteria and the design of the power system requires thought be given to each one.
Tungwell's sister company CPEPEC is a vertically integrated manufacturer and fabricator of engineered material solutions for switchgear applications. We manufacture custom material solutions for the following types of equipment:
Medium & High Voltage Circuit Breakers
Pad Mounted (Live & Dead Front) Medium Voltage Switchgear
Metal Clad Medium Voltage Switchgear
Automatic Transfer Switches
Motor Control Switchgear
Metering Equipment
Low Voltage Switchgear
Panelboards
Switchboards
We supply a complete line of insulating components for a broad range of switchgear designs. These components and spare parts can be provided individually or in complete kits for a particular type of switchgear.

MNS Low Voltage Draw-Out SwitchgearSystem of new modular and modularized design
Main circuit scheme number
Auxiliary circuit scheme number
Regular service condition
The ambient air temperature shall not be higher than +40�°C and not lower than -5�°C, and the average temperature within 24 hours shall not be higher than +35�°C. When the ambient air temperature is at +40�°C, the relative humidity shall not exceed 50%. At lower temperatures, the relative humidity may be higher, for example, 90% at +20�°C. However, due to temperature changes, moderate condensation may occur occasionally.
It is for indoor use, and the altitude of the installation site shall not exceed 2000m. It should be installed in a place without severe vibration, shock, and where electrical components are not corroded.
MNS Low Voltage Draw-Out Switchgear Structural Features
This switchgear has been technologically improved based on its original design to better suit China's national conditions. The cabinet body uses C-shaped profiles with a modulus of 25mm, which are connected by connectors to form various frame structures and drawer units that can meet different requirements. In the MCC cabinet, high-strength flame-retardant engineering plastic components are used to make the safety performance more reliable. At the same time, foreign functional boards are modified and combined with a modulus of 200mm, making it more conducive to the design requirements of mixed PC and MCC cabinet bodies. The� extraction unit� (withdrawal unit) and the cabinet body are equipped with a reliable interlocking device to prevent load-breaking under energized conditions, improving safety. In addition, the cabinet body is generally assembled from cold-rolled steel plates after passivation treatment. It can also be made of aluminum-zinc coated steel plates according to different user requirements.
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Metal Clad Switchgear Manufacturer

Our Strengths as a Metal Clad Switchgear Manufacturer
1. Industry-Leading R&D Capability

The first domestic enterprise to complete R&D, network access testing, and batch supply of *standardized & customized metal clad switchgear*. Covering 12kV/24kV/40.5kV, meeting medium-voltage power grid, industrial, and infrastructure demands.

2. CNAS-Accredited In-House Lab

Lab certified by CNAS (China National Accreditation Service for Conformity Assessment) â?? conducts full performance tests for metal clad switchgear: insulation strength test, mechanical operation life test (â?¥10,000 times), short-circuit withstand test, and dust-proof/water-proof test.

3. Smart Manufacturing & Quality Control

Equipped with a "smart quality control brain" and automated production lines (e.g., precision sheet metal processing, armor cabinet assembly), monitoring the entire manufacturing process to ensure consistent batch quality.

4. Mature Batch Supply Capacity

Stable supply chain for core components (circuit breakers, isolating switches), supporting urgent project timelines (e.g., 25-day delivery for KYN28A-12 batch orders).

Our Strengths as a Gas Insulated Switchgear Manufacturer
1. Industry-Leading GIS R&D Capability

The first domestic enterprise to complete R&D, network access testing, and batch supply of *standardized & customized GIS* (SF6-insulated, SF6-free, environmentally friendly). Covering 12kV/24kV/40.5kV/72.5kV, meeting medium-high voltage power grid demands.

2. CNAS-Accredited In-House Lab

Lab certified by CNAS (China National Accreditation Service for Conformity Assessment) conducts full GIS performance tests: SF6 gas leakage rate test