State Grid Low Voltage Switchgear Enclosure
State Grid Low Voltage Switchgear Enclosure
The Superset(GW) Low-Voltage Switchgear Enclosure is manufactured in full compliance with the *State Grid Corporation of China – Standard Design and Customization Scheme for Distribution Network Equipment (2019 Edition) – 0.4kV Low-Voltage Switchgear*.
All technical parameters conform to the typical structure of State Grid distribution equipment standards. Main circuit connectors, secondary connectors, drawer interlocking mechanisms, and other electrical structural accessories are all produced by Deyuan Electric, providing high‑quality assurance for the high‑reliability and high‑safety requirements of State Grid power distribution systems.LV Switchgear Drawer rated current:80A,125A,160A,250A,400A.
Also MCCB 3Poles and 4Poles schemes are full, which match the 3P MCCB and 4P MCCB drawer, 3P or 4P primary connectors
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Product Details
Frame Structure – Standard C‑Profile / 25mm Module
| Component | Material / Specification |
| Frame skeleton | Aluminum‑zinc plated steel, 2.0mm thick |
| Door panel | Cold‑rolled steel, 2.0mm thick |
| Profile type | “C” profile, 25mm module |
| Door hinge | Internal hinge (door opening ≥90°) |
- Drawer parts (side plate, bottom plate, switch mounting plate) and fixed partition plates: 1.5mm thick
- Top cover, bottom plate, compartment partition plates: ≥1.2mm thick
- Component mounting rails, side beams, primary connector mounting plates: 2.0mm thick
- IK impact protection level: IK10
Enclosure Dimensions
| Height | Depth | Width |
| 2200 mm | 800 mm | Incoming: 1000 mm |
| Bus coupler: 1000 mm | ||
| Feeder: 800 / 1000 mm | ||
| Reactive compensation: 1000 mm |
Panel Arrangement – Unified & Aesthetic
- Uniform panel division, consistent appearance, tidy, unit height unified
- Rear upper door: right‑side double hinge
- Rear lower door: double doors, left/right double hinges, central door lock, ventilation grilles on both sides
- Mounting holes for M8 bolts – unified pitch
- Main switch and nameplate positions follow State Grid standards
- Primary cable openings: Φ150mm / Φ110mm / Φ80mm with rubber grommets (depending on feeder scheme)
- Secondary cable opening: Φ50mm (unified)
- All instrument, control, and indication openings arranged per State Grid standards
| Parameter | Value |
| Rated insulation voltage (Ui) | 1000V |
| Rated operating voltage (Ue) | 400V / 690V |
| Rated impulse withstand voltage (Uimp) | 12kV |
| Overvoltage category | IV |
| Pollution degree | 3 |
| Rated frequency | 50 / 60 Hz |
| Main busbar ratings: | |
| Current rating (Ie) | ≤2500A / 2000A / 1250A (configurable) |
| Peak withstand current (Ipk) | ≤220kA |
| Short‑time withstand current (Icw/1s) | 65kA / 50kA / 30kA |
| Drawer unit ratings | |
| Module | Max Current |
| 8E | ≤250A |
| 12E | 400A |
| Fault Arc Protection | |
| Parameter | Value |
| Rated operating voltage | 400V / 690V |
| Expected short‑circuit current | 65kA |
| Duration | 300ms |
- State Grid distribution substations
- Industrial and commercial power distribution systems
- Feeder circuits, bus coupler, incoming sections
- Reactive power compensation (capacitor banks)
- Retrofit and upgrade of existing State Grid switchgear
Why Choose Superset(GW)?
- Fully compliant – Strictly follows State Grid 2019 standard
- High strength – 2.0mm frame, 1.5mm drawer parts, IK10 impact rating
- Flexible drawer options – 200H / 300H, hand‑pull or hand‑cranked, up to 400A
- Modular mechanisms – Interchangeable operating mechanisms, same panel cutout
- Safe & humanized – Double‑bent edges, steel rivets, anti‑scratch design
- Proven components – Primary/secondary connectors and interlocking mechanisms from Deyuan Electric
- High short‑circuit withstand – Icw up to 65kA, Ipk up to 220kA
Drawer Unit
Drawer height options: 200H (200mm) and 300H (300mm) – conforming to State Grid standards.
Maximum drawer current: 400A. Layout is arranged from small current at the top to large current at the bottom.
| Current (A) | Drawer Width (mm) | Drawer Height (mm) |
| 400 | 300 | 600 |
| ≤250 | 300 | 200 |
Drawer sheet metal features:
- Double‑bent edges – eliminates burrs, increases strength
- Positioning slots – precise alignment, improves assembly efficiency
- Steel rivets – replaces self‑tapping screws, avoids sharp edges that injure operators
Drawer Primary & Secondary Connectors
All primary and secondary connectors are manufactured by Deyuan Electric – fully compatible with State Grid standard drawer units.
Operating Mechanisms – Hand‑Pull / Hand‑Cranked / Motorized
- Hand‑pull and hand‑cranked mechanisms are both available – front panel layout is identical, structural parts are interchangeable.
- Motorized operation optional.
- Unlocking mechanism, TEST position, and WORKING position can all be equipped with auxiliary contacts for electrical interlocking.
- Drawer sheet metal design fully considers secondary wiring convenience and safe edge treatment (rounded corners, flanges) to prevent operator injury.
- Up to two sets of normally open / normally closed contacts can be installed at both TEST and WORKING positions
Drawer Interlocking Mechanism – Modular Combination
Modular assembly – meets different customer requirements and fast delivery
Convenient for on‑site operation, maintenance, and future upgrades
