The metal cable distribution box body is mainly made of stainless steel (304) or cold-rolled steel plate. It has mat corrosion resistance, good sealing performance, beautiful appearance, and all-weather protection function, and can meet the needs of various harsh environments and places in outdoor engineering projects. It is widely used in three-phase low-voltage power transmission and distribution systems in outdoor public places such as power transformation and distribution stations, public mining enterprises, both sides of streets, garden residential areas, high-rise buildings, airports, key construction and renovation projects, etc., as a complete set of finalized equipment for distributing electric energy to other users or equipment using cables.
Specifications
air temperatureThe maximum temperature of the indoor environment does not exceed +40℃, the maximum temperature of the indoor environment does not exceed +45℃, the lower limit of the ambient temperature is -25℃, and the daily temperature difference is 25K
pollution levelⅢ(Indoor)/IV(Outdoor)
HumidityThe daily average relative humidity is not greater than 95%, and the monthly average is not greater than 90%
AltitudeThe altitude does not exceed 1000m
solar radiation intensity0.1W/cm 2
Earthquake resistanceThe horizontal acceleration of the landform is 0.2g m/s 2 , the vertical acceleration of the ground is 0.15g m/s 2 , and the safety factor for three periods of sinusoidal resonance is not less than 1.67
Details
Product Overview
Low-voltage cable distribution boxes are widely used in cable engineering equipment in cable distribution systems. They mainly connect power cables to box-type transformers, load switch cabinets, negative-fusion combined electrical cabinets, ring network power supply units, etc., and serve as taps, branches, relays or conversions, providing great convenience for cable networking.
Technical parameters
Serial number
item head
Unit
Technical parameters
1
Cabinet
Structure type
The incoming line uses an isolation switch, and the outgoing line uses a plastic case circuit breaker
Installation method
Outdoor floor-standing
Cabinet material
304 stainless steel
Shell protection level
IP44
Box size
2
Busbar
Rated operating voltage
V
400
Rated insulation voltage
V
690
Rated frequency
Hz
50
Rated current
A
160/250/400/630
Rated short-circuit withstand current
10kA, 1S
Busbar material
T2 electrical copper
3
Isolation switch
Number of poles
3P
Rated operating voltage
V
400
Rated insulation voltage
V
690
Rated current
A
160/250/400/630
Rated short-time withstand current
10kA, 1S
4
molded case circuit breaker
Number of poles
3P
Release type
Electronic Electronic tripper equipped with three-stage protection function (long and short delays match the starting time of the shaft motor)
Rated operating voltage
V
400
Rated insulation voltage
V
690
Rated current
A
250/160/400
Rated ultimate breaking capacity
kA
50
Rated operating breaking capacity
kA
35
Functional features
The metal cable distribution box body is mainly made of stainless steel (304) or cold-rolled steel plates. It has mat corrosion resistance, good sealing performance, beautiful appearance, and all-weather protection function, and can meet the needs of various harsh environments and places in outdoor engineering projects.
Application environmental conditions
Air temperature: The maximum temperature of the indoor environment does not exceed +40℃, the maximum temperature of the indoor environment does not exceed +45℃, the lower limit of the ambient temperature is -25℃, and the daily temperature difference is 25K Pollution level: III (indoor)/IV (outdoor) Humidity Celsius: the daily average relative humidity is not greater than 95%, and the monthly average is not greater than 90% Sea Altitude: the altitude is not more than 1000m Solar radiation intensity: 0.1W/cm2 Seismic endurance: horizontal acceleration of the landscape is 0.2g m/s2, vertical acceleration of the ground is 0.15g m/s2, the safety factor of 3 cycles of sinusoidal resonance is not less than 1.67
Quoted standards
GB 7251 Low-voltage switchgear and control equipment GB 14048 Low-voltage switchgear and control equipment GB/T 20641 General requirements for empty shells of low-voltage switchgear and control equipment GB 4208 Low-voltage electrical control equipment
