Product Description:

It is a special metering box suitable for new construction, expansion, and renovation of residential lighting, and comprehensive high-rise residential electricity metering and management.

One household one meter meter box is divided into single-phase electric energy meter meter box and three-phase electric energy meter meter box. The structure is divided into wall-mounted type and wall-mounted type. The material can be divided into metal shell or glass steel shell. The metal shell metering box is suitable for installation in the corridors of residential buildings; the new and beautiful assembled single-phase glass fiber reinforced plastic metering box is suitable for middle and high-end residential areas and developers.

Product Structure:

Metal Shell Metering Box

• The metal shell metering box is divided into 1, 2+1, 4+1, 6+1, 8+1, 10+1, 12+1 and other meter positions according to the number of households in each residential unit; three-phase metering The epitopes above box 10+1 should be opened with two doors.
• The metering box design is suitable for inductive mechanical meters, all-electronic meters and time-sharing electric energy meters, and other meter positions should be reserved for centralized reading.
• The metal shell metering box is made of 2mm thick galvanized cold-rolled sheet, and the outdoor single-phase meter is made of stainless steel. The box cover and the box body should be easily detached; the cable inlet compartment, the electric energy meter compartment, and the user outlet compartment are isolated and closed separately.

FRP Shell Metering Box

• Dielectric strength: withstand power frequency withstand voltage of 50±5Hz to the ground. Sine wave 2000V/1min does not cause arcing or breakdown.
• The case will not be deformed or cracked when the climate temperature is 60±2℃/4h, and at a low temperature of -30±2℃/4h. The watch box has secondary flame retardant, and anti-corrosion properties.

Specification:

Selection principle of supporting components in the box

• The circuit breakers for incoming power distribution lines and miniature circuit breakers for the outgoing lines of user meters shall be of reliable quality and good performance (such as: C45, C65, Anjia series, ABB, Siemens, etc.). The capacity of the circuit breaker matches the rated maximum current of the energy meter. The installed electrical equipment and devices must be inspected and qualified.
• The door lock of the electric energy meter and the cable inlet compartment adopts a vertical up and down bolt mechanism. The button under the handle is equipped with a lock cylinder, a wild key, and a sealing device. The door of the user outlet compartment is not equipped with a lock or sealed. Install all-round adjustable metal lock hooks; set user labels for each watch position. Common tables are clearly labeled.
• The metering box adopts a three-phase five-wire system (A, B, C, N, PE), and the three-phase load should be shared evenly. row, and with copper row cover. The maximum rated current of the energy meter of the metering unit is single-phase, three-phase 20A or 40A, and the wire cross-sectional area is 10mm2 single-strand copper core wire connection, and the maximum rated current is 60A and above. The configuration wire cross-sectional area is 16mm2 multi-strand copper core wire connection , The wire ends connected by multi-strand wires are tinned. Use yellow, green, red (A, B, C) colored wires for the conductors, light blue (N) for the neutral wire, and double colored wire (PE) for the ground wire. The color of the household line is consistent with that of the incoming line, and there is a sign corresponding to the electric energy meter on the disconnected side of the user’s outgoing line.
• The equipment in the box should be installed on the insulating bottom plate, and the thickness of the insulating plate is 6mm. There is a laying groove under the design of each row of meters. The laying groove and wires are made of flame-retardant materials, and the wiring should be neat, beautiful and reasonable.
• The metering box should be equipped with special grounding screws, and spring washers must be added to the grounding screws. There should be signs for grounding and zero connection. Multi-strand copper core wires are used for repeated grounding in the meter box, and the cross-sectional area is not less than 16mm².