Best Price on Spd Type 3 - Surge Protector Device 18 Shield Structure – Leihao

Surge protector (SPD) is an indispensable device in lightning protection of electronic equipment. Its working principle is that under normal circumstances, SPD is in a very high resistance state, thus ensuring the normal operation of power supply system. When the power supply system gradually increases with the surge current and voltage, the resistance of SPD continues to decrease, and SPD is immediately turned on in nanosecond time, and the surge energy is discharged into the ground through SPD; After the surge, the surge protector quickly reverts to the high impedance state, thus not affecting the normal power supply of the system.

With 35mm standard DIN-rail mounting, connecting copper stranded conductor is 2.5~35 mm².

At front of LHSPD  each pole must be setted protection —used fuse or miniature circuit breaker lightning  current  LHSPD protection ,after LHSPD breakdown to short circuit protection.

LHSPD  install on protected line (equipment)  to  the front  and c onnected to  supply line.

A class  products  install in the building home-entry line hold large surge current total distribution box.

BC class products most install on the floor  distribution box.

D class products close to the front – end  equipment  that smaller surge current, smaller residual voltage

Accessories Diagram

LH-40/2P
Maximum continuous operating voltage Uc 385V~
Nominal discharge current In 20KA
Maximum discharge current Imax 40KA
Voltage protection level Up ≤ 1.8KV
Appearance: full arc, red, pad printing

LH-40/4P
Maximum continuous operating voltage Uc 385V~
Nominal discharge current In 20KA
Maximum discharge current Imax 40KA
Voltage protection level Up ≤ 1.8KV
Appearance: flat, white, pad printing

LH-40/3+NPE NPE
Maximum continuous operating voltage Uc 385V 255V~
Nominal discharge current In 20KA 20KA
Maximum discharge current Imax 40KA 40KA
Voltage protection level Up ≤ 1.8KV ≤ 1.3KV
Appearance: full arc, white, pad printing

Model Definition

Technical Parameters

Uses and characteristics of performance

1. LPZOA area All objects in the exposed area, outside the building and this area may be struck by lightning directly and lead away all lightning current, and the lightning electromagnetic field in this area is not attenuated.

2. LPZOB Area Every object in this area cannot be struck by lightning directly, but the magnitude of lightning electromagnetic field in this area is the same as that in LPZOA area.

3. LPZ1 Area Every object in this area cannot be struck by lightning directly, and the current flowing through each conductor is smaller than that in LPZOB area, so the lightning electromagnetic field in this area may be attenuated, depending on shielding measures.

4. Subsequent lightning protection areas (LPZ2, etc.) When the lightning current and electromagnetic field need to be further reduced, the subsequent lightning protection zone should be introduced, and the required conditions of the subsequent lightning protection zone should be selected according to the environment required by the system to be protected. All power lines and signal lines enter the protected space LPZ1 from the same place, and are equipotentially connected on the equipotential bonding belt 1 located in LPZOA and LPZ1 (generally grounded in the incoming room). These lines are equipotentially connected on the equipotential bonding belt 2 at the interface between LPZ1 and LPZ2. Connect the shield 1 outside the building to the equipotential bonding belt 1 and the inner shield 2 to the equipotential bonding belt 2. The LPZ2 constructed in this way makes it impossible for lightning current to be introduced into this space and pass through this space.

Used place: It can be used in power distribution cabinetdistribution box and.

Material and production process: Plastic shell, chip, copper, and other accessories。Plastic shell, chip, copper, and other accessories.Spot welding, glue filling, soldering, printing and module mounting.

Compared with our peers, the characteristics of our products are：Product inspection meets the national standard。