Product introduction
N-PE surge protective device module (here inafter called SPD) is suitable for the "3+1" circuit protected mode TT system of AC 50/60Hz, rated voltage up to 380V, used in between equal potential system of neutral and PE line, to protect from direct and indirect lightning impulse and other transient over voltage. If cooperated with MBD1-C40 series surge protective device, it is constructed as 1P+1NPE; 2P+NPE, 3P+NPE combined SPD, this is to improve the surging protective performance. As per the conditions of IEC61643-1:1998-02 standard, Class II surge protective device, it is category C surge protective device.
N-PE meets with GB18802.1/IEC61643-1 standards.
Operation Elements
The main operating element of NPE is gas discharging tube or air discharging gap, generally, it is high resistance between electrodes, while the surge of direct and indirect lightning impulse and other transient over voltage influence on the power network, the SPD between electrodes will be conductive within short time (ns), and leading surging current into ground, consequently to protect the electric appliances of network. After surging voltage passed by NPE, and disappeared, NPE recovers in high resistance. It will not have influence on the normal service of network.
Installation
- NPE and MBD1-C series surge protective devices forms MBD1-40-1P+N, 2PN, 3+P+N and etc SPD, with MC and MD protection modes.
- NPE adopts 35mm standard mounting rail. Neutral line is of 2.5 - 35 mm2 conductor, eart hing wire shall be dual color multi- strand copper conductor of more than 4 mm2, the length not more than 500mm.
Technical Parameter
| Model and specification | MBD1-NPE | ||||
| Maxi continuous operating voltage | L-N | 420 | 385 | 320 | 275 |
| N-PE | 255 | ||||
| Voltage protective level | L-N | 2.0 | 1.8 | 1.6 | 1.5 |
| N-PE | 1.2 | ||||
| Maxi discharging current | 40 | ||||
| Nominal discharging current | 20 | ||||
| Response time | <25 | ||||
| Protection grade | IP20 | ||||
| Indication of invalidation | Aging invalidation: white: Normal, red: invalidation | ||||
| Application | Several protection for in line | ||||
| Remote signal Function | Can also picking | ||||
| Remarks | Other maxi continuous operating voltage Can be customized | ||||
Principle Diagrams
Outside Size Fig
