High Voltage Box
The High-Voltage Box manages the high-voltage circuit of a battery rack, including voltage and current measurement, contactor control and circuit protection. It integrates circuit breakers, contactors, fuses, a pre-charge circuit, current sensors, a BCU and power supply. CAN, RS485 and LAN interfaces enable communication with the BAU, PCS, EMS and monitoring equipment.
Product Specifications
| Parameter | Description |
| Rated voltage | DC 1500 V |
| Peak current | 220 A (within 15 min) |
| Rated current | 180 A |
| Supply voltage | AC 85–264 V & DC 250–1500 V |
| Max. rated power consumption | 24 W (shunt) / 28 W (shunt + Hall), no external output |
| Max. instantaneous power consumption | 123 W (shunt) / 127 W (shunt + Hall), no external output |
| Environment | |
| — Operating ambient temperature | −20 ℃ ~ 45 ℃ (operation beyond this range requires derating assessment) |
| — Extreme short-term storage temperature | −40 ℃ ~ 65 ℃ (see Section 7.3 for long-term storage conditions) |
| — Relative humidity | 5%–95%, non-condensing |
| — Protection rating | IP65 |
| — Weight | ≤25 kg |
| — Altitude | <3000 m (above 3000 m, design review required) |
| — Corrosion protection class | C3 |
| Enclosure | |
| — Dimensions | Exterior (W×D×H): 480 mm × 700 mm × 160 mm (excluding mounting brackets) |
| Mounting (W×H): 510 mm × 100 mm | |
| — Mounting hole size | Hanging-lug fixing holes are slotted holes Φ7 × 10, secured with 4 M6 screws |
| — Enclosure grounding | PE grounding via M6 riveted waterproof nut |
| — Material | SGCC |
| — Finish | Black powder coating RAL9011, fine sand texture |
| — Flammability rating | UL94-V0 |
| Application scenarios | Commercial & industrial energy storage, etc. |
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