When there is overcurrent or short circuit in the outgoing line of the circuit, the current transformer can detect the current signal, which is transmitted to the controller. The controller issues a command to trip the mechanism, which drives the dynamic and static contacts inside the vacuum tube to separate, thereby achieving disconnection and cutting off the circuit, playing a protective role.
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To ensure transportation safety, our electrical products are exported in reinforced wooden crates. The crates undergo heat treatment and bear the ISPM-15 mark, enabling swift customs clearance. The raised base design facilitates forklift operation, while internal shock-absorbing fastening ensures the products arrive intact. All exterior crates are clearly labeled and comply with international logistics standards.
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35kV gas-insulated switchgear, VCB
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35kV gas-insulated switchgear, VCB
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35kV gas-insulated switchgear, VCB
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10kV ring main unit, VCB
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35kV high-voltage switchgear, power transmission successful
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Power transmission successful
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Photovoltaic Grid-Connected Cabinet Utilising ACB and MCCB
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Box-typesubstation ACB VCB MCCB
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Box-typesubstation ACB VCB MCCB
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Box-typesubstation ACB VCB MCCB
| Parameter Category | Specification | Remarks |
| Rated Voltage | 12 kV | Standard for distribution networks |
| Rated Current | 400A, 630A, 1250A | Custom ratings available |
| Rated Short-Circuit Breaking Current | 16 kA, 20 kA, 25 kA | |
| Rated Short-Time Withstand Current | 16 kA / 4s, 20 kA / 4s, 25 kA / 4s | |
| Rated Peak Withstand Current | 40 kA, 50 kA, 63 kA | |
| Rated Insulation Level | Power Frequency: 42 kV (1 min) / Lightning Impulse: 75 kV | |
| Mechanical Life | 10,000 operations | |
| Electrical Life | 10,000 operations (at rated current) | Full capacity breaking |
| Interrupter Medium | Vacuum | Sealed ceramic bottle |
| Operating Mechanism | Spring | Manual or motorized |
| Control Voltage | AC/DC 110V, 220V | Optional 24V, 48V |
| Protection Degree | IP67 | Suitable for harsh environments |
| Dimensions (H×W×D) | 880 × 560 × 680 mm | Compact design |
| Weight | Approx. 130 kg | Easy to install |
| Installation Method | Pole-Mounted | Outdoor use |
| Ambient Temperature | -40°C to +55°C | Wide operating range |
| Altitude | ≤ 4000 m | High-altitude version available |

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