TheGGD Type Low Voltage Fixed Switchgearis a versatile, safe, and robust electrical cabinet system engineered forthree-phase AC 50/60Hzpower distribution guidenetworks. With a maximum operating voltage ofAC 690Vand a rated current of up to3150A, this fixed-type low-voltage switchgear is a trusted solution across industries. It is widely deployed inpower plants, substations, industrial facilities, and mining enterprisesto managelighting control, power distribution, motor starting, and reactive power compensation.
Compliant withIEC 60439-1 standards, the GGD Type Low Voltage FixedSwitchgearensureshigh breaking capacity,reliable performance,excellent thermal stability, andflexible configurationsto meet the demands of complex low-voltage systems.
Applications of GGD Type Low Voltage Fixed Switchgear
- Urban power distribution networks
- Petrochemical and energy systems
- Industrial automation plants
- Substations and transformer rooms
- Renewable energy control panels
- Commercial building electrical rooms
Structural Features of GGD Type Low Voltage Fixed Switchgear
- Frame: Constructed with an8MF or C-type cold-rolled steel frameusing modular welding for superior strength and precision.
- Ventilation: Featuresupper and lower ventilation slotsfor natural heat dissipation, ensuring optimal temperature control.
- Compartments: Separate sections forbusbars, functional units, and cable terminalsto minimize fault propagation.
- Protection: Rated up toIP41, providing excellent dust protection and operator safety.
- Finish: All metal parts aregalvanized and powder-coatedwith orange-textured polyester for corrosion resistance and durability.
- Doors: Equipped withcompression-resistant rubber sealsand removable hinges for easy maintenance.
Technical Specifications of GGD Type Low Voltage Fixed Switchgear
| Model | Rated Voltage (V) | Rated Current (A) | Short-Circuit Breaking (kA) | 1s Short-Time Withstand (kA) | Peak Withstand Current (kA) |
|---|
| GGD1 | 400 / 690 | A: 1000 / B: 600 / C: 400 | 15 | 15 | 30 |
| GGD2 | 400 / 690 | A: 1600 / B: 1000 / C: 600 | 30 | 30 | 63 |
| GGD3 | 400 / 690 | A: 3150 / B: 2500 / C: 2000 | 50 | 50 | 105 |
Main Circuit Schemes & Busbar Configurations
- Schemes: Offers129 main circuit schemeswith over298 specificationsfor tailored solutions.
- Layouts: Customizable formotor control, power distribution, and capacitor banks.
- Busbars: Available inaluminum or copper, based on rated current and user needs.
- Connections: Usestin soldering and pressed surfacesfor low resistance and reliable contact.
- Options: Flexible mounting configurations, includingsingle-row aluminumordouble-row copper busbars.
Component Selection & Auxiliary Circuits
- Components: Incorporates high-quality options likeDZ20, BRM1, HD13BX, HS13BX, and LMZ3D current transformers.
- Auxiliary Circuits: Divided intopower supplyandrelay protection schemes.
- Space: Ample room forsecondary control relays, meters, and PLC modules.
- Control Voltage: Supports customization, includingAC380V/220VandDC110V/220V.
Dimensions & Installation
| Cabinet Type | Width (mm) | Depth (mm) | Installation Height (mm) |
|---|
| Power / Bus Cabinet | 600 / 800 / 1000 / 1200 | 800 / 1000 | Customizable |
| Feeder Cabinet | 600 / 800 | 800 / 1000 | Customizable |
| Motor Control | 600 / 800 | 800 / 1000 | Customizable |
| Reactive Power | 600–1000 | 800 / 1000 | Up to 1800 mm |
Working Conditions
| Parameter | Specification |
|---|
| Ambient Temperature | -30°C to +50°C (avg. ≤ +35°C) |
| Max Altitude | ≤ 2500m |
| Relative Humidity | ≤50% at +40°C; ≤90% at +20°C |
| Installation Inclination | ≤5° |
| Site Conditions | No flammable gas, corrosion, or shock |
| Storage Temperature | -25°C to +55°C (max 70°C short-term) |
Installation & Commissioning
- Setup: Followfactory-supplied installation drawings.
- Mounting: Secure to foundation withboltsand level onsteel channels.
- Busbars: Clean, grease, and tighten all connections.
- Inspections:
- Verifyelectrical contactsandmechanical interlocks.
- Confirmrelay and fuse settingsalign with design.
- Test insulation resistance (≥11MΩwith 690V megger).
- Ensure auxiliary circuits match theschematic diagram.
Supplied Documents
- Product instruction manual
- Test reports and certifications
- Electrical diagrams and installation layouts
- Spare parts list and packing list
- Operation handle, door keys, and wiring guide
Frequently Asked Questions (FAQ)
Q1: What’s the difference between GGD1, GGD2, and GGD3?
A: The models vary inrated currentandshort-circuit capacity. GGD3 offers the highest performance, supporting up to3150Aand105kA peak withstand current.
Q2: Can GGD Typelow voltageFixed Switchgear be used outdoors?
A: No, it’s designed forindoor use. For outdoor applications, consider weatherproof enclosures or alternatives likeGCK or GCS switchgear.
Q3: Does it support reactive power compensation?
A: Yes, it integrates withGGJ1 and GGJ2 capacitor compensation cabinetsfor effective reactive power management.
Q4: Can I replace aluminum busbars with copper?
A: Yes,copper busbarsare available for enhanced conductivity and reduced thermal expansion, based on your specifications.
