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The XJM series meter box is designed for use in 50Hz, 400V three-phase AC power distribution systems to facilitate electricity metering. It is widely used in high-rise buildings, residential complexes, schools, hotels, public buildings, and industrial facilities.
The XJM series meter box is designed for use in 50Hz, 400V three-phase AC power distribution systems to facilitate electricity metering. It is widely used in high-rise buildings, residential complexes, schools, hotels, public buildings, and industrial facilities. The enclosure is constructed from stainless steel, powder-coated cold-rolled steel, or SMC (Sheet Molding Compound) materials, making it suitable for both indoor and outdoor installation. It houses components such as circuit breakers, current transformers, and electricity meters. The unit ensures accurate metering of electricity consumption for individual circuits and is designed for safe operation, allowing for use by non-professionals. This device complies with the national standard GB/T 7251.3-2017, "Low-voltage switchgear and controlgear assemblies."
① Durable and Versatile Materials: The enclosure is made from stainless steel, powder-coated cold-rolled steel, or SMC materials, ensuring suitability for various indoor and outdoor environments.
② Flexible Classification: Available in a wide range of configurations based on the number and specifications of meters, materials, installation environments, and mounting methods to meet diverse application needs.
③ Safe and Convenient Operation: Designed for safe operation by non-professionals, facilitating easy daily use and management.
| Serial Number | Project | Unit | Technical Specifications | ||
|---|---|---|---|---|---|
| 1 | Rated operational voltage | Main circuit | V | 220、380 | |
| Auxiliary circuit | AC:220、380 | ||||
| 2 | Rated insulation voltage of main circuit | V | 400 | ||
| 3 | Rated current of main circuit | A | 6~250 | ||
| 4 | Power‑frequency test voltage | V/5S | 1890 | ||
| 5 | Rated short‑time withstand current of busbar | kA | 6 | ||
| 6 | Busbar | Three‑phase four‑wire system | - | A、B、C、PEN | |
| Three‑phase five‑wire system | A、B、C、PE、N | ||||
| 7 | Enclosure protection rating | - | IP44/IP20C | ||
① Temperature: Ambient air temperature between -25°C and +60°C.
② Altitude: Installation site altitude not exceeding 2,000 m.
Atmospheric Conditions
① Indoor: Clean air; relative humidity not exceeding 50% at a maximum temperature of +40°C; higher humidity is permissible at lower temperatures (e.g., 90% relative humidity at +20°C), though attention must be paid to potential moderate condensation caused by temperature fluctuations.
② Outdoor: Relative humidity may reach up to 100% for short periods at a maximum temperature of +25°C.
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