PRODUCT INTRODUCTION
NQSP2Z series modular surge protector is suitable for lightning surge overvoltage protection of DC power system, and is used to protect the electrical and electronic equipment on the DC side of the inverter from lightning electromagnetic pulse induced voltage, operation transient and resonance (<100µs)) overvoltage effects. Widely used in power supply systems such as communication equipment, electric power, security, transportation, industrial control, etc., to protect the power grid due to lightning strikes or surge overvoltages, and can discharge a maximum of 40KA lightning strike current. The shell is designed to be installed on a 35mm electrical rail. The detachment device can automatically detach it from the grid, and at the same time the status indicator window turns from green to red.
The product compliant with GB/T 18802.11 and IEC 61643.11 standard
PARAMETERS
Product Model | NQSP3Z-40 | ||||
Electrical Characteristics | |||||
Pole Number | 2P, 3P | ||||
Rated Working Voltage Un(V) DC | 100 | 250 | 500 | 800 | 1000 |
Max Working Voltage Uc(V) DC | 125 | 300 | 560 | 895 | 1120 |
Voltage Protection Level Up(kV) | 1.0 | 1.4 | 2.0 | 2.6 | 3.2 |
Rated Discharge Current (8/20μs) In(kA) | 20 | ||||
Max Discharge Current (8/20μs) Imax(kA) | 40 | ||||
Protection Models | 2P: L+ to PE, L- to PE. 3P: L+,L- to PE, L+ to L- | ||||
Continuous Working Current Ucpv | 0.1mA | ||||
Residual Current Ucpv | <0.1mA | ||||
Rated Short Circuit Current Iscpv(kA) | 12 | ||||
Thermal Trip Device | Built - in | ||||
Response Time I(ns) | <25 | ||||
Test Classification | II | ||||
Mechanical Characteristics | |||||
Environmental Limit Temperature | -40°C~+85°C | ||||
Shell Material | Thermoplastic material meet UL94 - V0 | ||||
Installation Characteristics | |||||
Terminal | Tunnel - type Terminal | ||||
Maximum Torque(N.m) | 2.5 | ||||
Installation | Standard DIN rail (35mm width), Panel bracket installation | ||||
Recommended Fuse or Breaker (A) | 16-25 | ||||
Recommended Phase/neutral Wire Diameter(mm²) | 6-16, Max 25 | ||||
Ground Wire PE(mm²) | 10-16 Double color, Max 25 | ||||
SIZE (UNIT: MM)
MAIN STRUCTURE AND WORKING PRINCIPLE
PRECAUTIONS AND WARNING
1, Each product branch circuit shall be equipped with a protection device with a current limiting current less than 32A.
2, Before installation, be sure to disconnect the DC power supply. Only connect the wires after confirming the polarity is correct. Avoid reverse connection of positive and negative poles, which may damage the device.
3, Regularly check the status indicator of the surge protector. In case of a fault, immediately cut off the power for replacement. Do not operate with power on.
4, It is forbidden to use the device beyond the rated voltage and current range. Keep it away from high - temperature and flammable environments to prevent fire risks.
5, Non - professionals are not allowed to disassemble or repair it without permission. When replacing, use products of the same specification and model to ensure the protection effect.