XL-21 floor-type low voltage power distribution switchgear

Short Description:

  • As a power supply system with AC 50Hz-60Hz, rated working voltage 380-400V, rated working current up to 630A, and breaking capacity up to 15kA,
  • It provides power conversion, distribution and control for power distribution equipment such as power, lighting and fans. Can provide overload, short circuit and leakage protection.
  • It  contain 2 Two installation structure :Indoor box structure (protection grade IP30),Outdoor box structure (protection grade IP65).Easy to install, economical and practical
  • It is suitable for power users such as power plants, substations, industrial and mining enterprises, and highway tunnels.

 


Product Detail

Product Tags

5

Service conditions of The XL low-voltage distribution box

Normal service conditions of switchgear as follows:
Ambient temperature:
Maximum +40°C
Maximum 24 hour average +35°C
Minimum (according to minus 15 indoor classes) -50°C
Ambient humidity:
Daily average relative humidity less than 90% in indoor (outdoor more than 50%)
Monthly average relative humidity less than 90% in indoor (outdoor more than 50%)
Earthquake intensity less than 8 degree
Height above sea level less than 2000m
the inclination of the equipment with the vertical surface shall not exceed 5°

This product should not be used under conditions of fire, explosion, earthquake and chemical corrosion environments.

Main technical:

NO.

Item

Unit

Data

1

Rated operational voltage(V)

V

AC 380(400)

2

Rated insulation voltage(V)

V

660(690)

3

Rated frequency(Hz)

Hz

50(60)

4

Horizontal bus rated current(A)

A

≤630

5

Main bus rated short-time withstand current

kA/1s

15

6

Bus rated peak withstand current

kA

30

7

Bus Three-phase four-wire system

\

A,B,C,PEN

Three-phase five-wire system

\

A,B,C,PE,N

8

IP grade use in indoor

\

IP30

use in outdoor

\

IP65

9

Dimension (600~1000)×370(470) ×(1600~2000) mm
xl1

Design plan

xl2

Structural Feature

1.Indoor box structure (protection grade IP30)

• The distribution box frame is made of cold-rolled steel plate by bending and welding(Support for custom).

• After spraying process, it has good anti-corrosion performance.

• the internal installation beams and installation boards are made of aluminum-zinc coated or cold-rolled steel plates for galvanizing passivation.

• Single-sided foam glue is attached to the inner edge of the door to prevent direct collision between the door and the box body, and also improve the protection level of the door.

• Both the bottom plate and the top plate of the box can be reserved for cable knock-out holes to facilitate cable entry and exit.

• The side can be equipped with heat dissipation holes or open heat dissipation windows according to user requirements to distribute internal gas and moisture.

• The cabinet can be installed on the floor, wall or embedded according to user requirements.

• The door can be opened with single door or double door for easy maintenance and installation.

 

2. Outdoor box structure (protection grade IP65)

• The distribution box frame is made of stainless steel plates by bending and welding(Support for custom).

• After outdoor spraying process, it has good anti-corrosion performance.

• The internal installation beams and installation boards are made of aluminum-zinc coated or cold-rolled steel plates for galvanizing passivation.

• Single-sided foam glue is attached to the inner edge of the door to prevent direct collision between the door and the box body, and also improve the protection level of the door.

• If there are secondary components on the panel, a double door structure is adopted. The outer door is a glass door, and the secondary components are installed on the inner door.The operating status of the equipment can be observed without opening the outer door. Cable knock-out holes are reserved on the bottom of the box to facilitate cable entry and exit.

• The side can be equipped with heat dissipation holes or open heat dissipation windows according to user requirements.

• The top is equipped with a rain-proof top cover, and the front lower part of the top cover has a heat dissipation hole to dissipate internal gas and moisture.

• The floor-mounted distribution box is equipped with lifting lugs at suitable positions on the top and both sides of the back of the box for lifting and installation. The bottom plate of the box body is equipped with mounting holes or the foot plates on both sides of the box bottom are installed on the ground.

• The wall-mounted distribution box is equipped with lifting lugs at the bottom of the rear top of the box and at suitable positions on both sides for lifting and installation.

• The door can be opened with single door or double door for easy maintenance and installation.

 

3. Bus-bar system

• The main bus-bar is supported by insulating supports.

• The insulating support is made of high-strength, high-flame retardant PPO alloy material, with high insulation strength and good self-extinguishing performance.

• The box is equipped with an independent PE protective grounding system and N neutral conductor. The neutral bus bar and the protective grounding bus bar are installed in parallel in the lower part of the box, and there are holes on the PE and N rows. The protective grounding or neutral cables of each circuit can be connected nearby. If the N wire and the PE wire are separated by an insulator, the N wire and the PE wire are used separately. If in a three-phase four-wire system, the neutral bus and the protective grounding bus share the same bus (PEN line).

4.  Protective grounding system

Grounding copper blocks are welded on the frame outside and inside the box, which can be connected to the grounding bus inside and outside the box respectively. Ground bolts are welded behind the door and connected to the frame with copper wires. The installation beams in the box and the frame are connected by bolts to ensure the grounding continuity of the entire distribution box.

5. Wire entry and exit method

The cable or pipeline entry and exit method is adopted, and the box is equipped with a clamp for fixing the cable.


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