Introduction
Gangheng Electric's GGD series is a fixed-type AC low voltage main distribution panel rated at 400V / 0.4kV, 50Hz, 3-phase. The range covers rated currents from 600A to 3150A across three models, designed for power distribution and motor control in industrial plants, substations, commercial buildings, and utility infrastructure.
All cabinets are manufactured to GB7251 and JB/T5877. IEC 61439, ANSI/IEEE, and BS configurations are available for export projects.
Model Selection: 1000A vs 2500A
The right model depends on two parameters: your maximum load current and the available fault level at the installation point.
| Model | Rated Voltage | Rated Current (A) | Short-Circuit Breaking (kA) | Short-Time Withstand (kA/1s) | Peak Withstand (kA) |
|---|---|---|---|---|---|
| GGD1 | 0.4 kV | 600 / 1000 | 15 | 15 | 30 |
| GGD2 | 0.4 kV | 1000 / 1500 (1600) | 30 | 30 | 63 |
| GGD3 | 0.4 kV | 2000 / 2500 / 3150 | 50 | 50 | 105 |
GGD1
is the standard choice for a 1000 amp 400 volt 3 phase distribution panel in secondary distribution rooms, light industrial facilities, and commercial buildings where the upstream fault level does not exceed 15kA.
GGD2
is the right fit when you need a 1000 amp 400 volt 3 phase main panel with higher fault tolerance - typically where the cabinet sits closer to the transformer, or where the supply authority specifies a 30kA fault level.
GGD3
covers applications requiring a 2500 amp 400 volt 3 phase main panel or a 2500 amp 400 volt 3 phase cabinet - power plants, large substations, steel mills, petrochemical complexes, and mining surface substations where fault currents reach 50kA.
If your load current sits between 1000A and 1500A, GGD2 is the appropriate selection even if fault level alone might suggest GGD1, because the busbar and breaker ratings are matched to the higher continuous current demand.
Enclosure & Installation
Standard cabinet dimensions: 1000mm (W) × 600mm (D) × 2200mm (H). Bottom cable entry via cable trench. Rear clearance ≥ 800mm required. IP30 standard; IP20–IP40 available on request.
| Parameter | Specification |
|---|---|
| Ambient temperature | −5°C to +40°C (24h average ≤ +35°C) |
| Relative humidity | ≤ 50% at +40°C |
| Altitude | ≤ 2,000m |
| Installation tilt | ≤ 5° from vertical |
Typical Applications
This electrical LV panel range is used across power generation and transmission, industrial manufacturing, petrochemical and oil refining, mining surface substations, commercial high-rise buildings, and EPC turnkey substation projects.
Gangheng Electric (est. 2004) is a National High-Tech Enterprise and ISO9001 / ISO14001 / OHSAS18001 certified manufacturer based in Jiangshan, Zhejiang Province. Qualified supplier to State Grid Corporation of China. Export experience covering the Middle East, Central Asia, and Africa.
➡Since Zhejiang Wangpai Home Furnishings Co., Ltd. relocated to its new factory in 2015, we have been honoured to be their partner. Over the past decade, they have consistently chosen our Fixed Mounted Switchgear products, which not only affirms the quality of our products but also recognises the level of our service. During this period, we have established a stable and reliable supply chain relationship with them.
FAQ
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