Lyd4-40 Surge Protective Device SPD for 40ka

Model NO.
LYD4-40
HS Code
8536300000
Production Capacity
100000 Per Month
Reference Price
Please contact us for quote
Contact Us

Product Description

PRODUCT INTRODUCTION
LYD4 series surge protective device (hereinafter called SPD) is suitable used in the IT, TT, TN-C,-TN-S,TN-C-S and etc power supply system of AC 50/60Hz, rated voltage 380V and below, to protect from direct and indirect lightning impulse and other transient over voltage. Products are in compliance with GB 18802.1 and IEC 61643-1 standards.

STRUCTURE AND PRINCIPLE
  1. SPD as only one side of terminals, able to prevent from being electric touching, indoor fixedly mounted, limited voltage.
  2. SPD has built-in dis-connector, when SPD is invalid due to overheating or breakdown, the dis-connector can automatically separate SPD from the network, meanwhile send an indication signal. The visible window show white color in normal service, if to be separated from network, it will show red color.
  3. 1P+N,2P+N,3P+N SPD consist of 1P,2P.3P SPD and NPE neutral and earthing protection modules, used in the power supply system of TT, TN-S and etc.

INSTALLATION
  1. To be mounted: between LPZ0B zone and the LPZ1 zone, adopts 35mm standard mounting rail. The cross section area of multi-strand soft copper conductor: 2.5~35mm 2 .
  2. Every pole of SPD shall be protected by fuse or mini circuit breaker.
  3. In order to prevent the surge protector failure after the impact of power grid security, each pole must be connected in series with a front-end surge protector LY-SCB back-up protection.

TECHNICAL PARAMETER
Model and Specification LYD4-20 LYD4-40
Maxi continuous operation voltage ( Uc ) VAC 420 275 420 275
Voltage protective level( Up ) kV 1.8 1.2 2.0 1.5
Maxi discharging current (8/20 μ s ) ( Iimp ) kA 20 40
Nominal discharge current (8/20 μ s ) ( In ) kA 10 20
Response time ( ns ) ≤25
Degree of Protection IP20
Indication of invalidation Greed - normal; red-invalidation
Ambient air temperature -40°C ~ +80°C
Installation DIN 35mm rail
 
DIMENSIONS
 

 

Other Breaker & Protector

UKSONO.COM, 2023