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You Are Here: Home >> Proudcts >>Low Voltage Electrical Products>>Surge Protective Device
OBV2-65/40 SPD Series
OBV2-65/40 SPD Series

Usage and application scope
OBV2 type surge protective device (short name "SPD") is suitable for AC 50/60 Hz,380V and the following electric power systems,such as TT, IT, TN-S, TN-C, TN-C-S. It protects the electric network shocked by the thunder or over voltage .
Working condition:
   1.Height: not more than 2000m
   2. Operating temperature : normal -5~+40˚C       Enlarge range: -40~+80˚C
   3. Relative humidity: on condition that room temperature 30%~90%
   4. Installed at no notability shocked and virated place
   5. Don’t be contained in explosion medium,the medium such as air and dust (including conduction dust ) shouldn’t come to the degree that can corrode metal or damage insulation. Model and meaning


Tripping device
There’s tripping device designed on the modular of the protector. When the protector is over heat or shocked, the tripping device can automatically separate it from the electric net, at the same time showing the indication signal. It’s green when the protector is normal, red when tripping.
Remote signaling contact
The products can be produced available with the accessory of remote signaling contact. If one or more of modular of the protector is in malfuction, the contact will be closed, and sending the malfunction signal.
Principal parameters
Maximum continuous operating voltage : Uc 275 440 V~
Test grade: II
Voltage protect level: Up≤ 1.2 1.8 2.0 kV
Maximum discharge current : (8/20μS) Imax 12 15 40 62kV
Nominal discharge currrent: (8/20μS) In 8 5 15 30kA

Remote communication terminal parameter

Type of remote communication terminal   Active
Terminal normal power UN/IN AC: 250V/0.5A DC: 250V/0.1A, 125V/0.2A, 75V/0.5A
Conductor section   Maximum single line: 1.5mm2

Main Structure and Operating Principle
n three-phase four- line system , three phase lines and one zero line are connected protective device to the earth cable . (figure 1 ) . In normal situation , the protective device is high resistance , when the over voltage brings for electric network shocked by thunder or other reasons , the protective device will rapidly transmit in ns , then lead the voltage into earth and protect the electric equipment . As the surge voltage through the protective device and after disappear it will recover to high resistance and not influence the normal operating.


Technical Parameters :

Item
8-275
8-440
15-275
40-440
40-275
40-440
65-275
65-440
Maximum continuous operating voltage
Uc
275V~
440~
275V~
440V~
275V~
440V~
275V~
440V~
Nominal discharge currrent:
In
2
2
5
5
15
15
20
20
Maximum discharge current
Imax
8
8
15
15
40
40
65
65
Voltage protect level Up
5kA
≤1.2kV
≤1.8kV
≤1.2kV
≤1.8kV
≤1.2kV
≤1.8kV
≤1.5kV
≤2.0kV
Response time ns
≤25ns
Max. fuse intensity
125AgL/Gg
100AgL/Gg
 
 
Short circuit current intensity
16AgL/Gg
25AgL/Gg
50AgL/Gg80AgL/Gg
Operating temperature area
40˚C ~+ 80˚C
Conductor section
Min 1.5mm2 sibgle lead, max. 35mm multi-twisting lead/35mm single laed
Installation frame
35mm rail
Out case
red hot shrink material
Protection class
IP20
Dimension
one stnadard module width
Installation
1. It is installed by standard 35 mm rail.
2. The earth cable should choose the double color wire 4mm2 whose length is not longer than 500 mm.
3.To avoid the influence to the electric net after the protector is in malfuction, the protector connected to L line should be in series connect with a fuse. The appearance and installation dimension refer to the Fig.
 

Adjustment, operation, maintenance
1. There’s no need to adjust the protector after installation.
2. The protector can automatically protect the electric net should it’s installed rightly.
3.When operating, check whether the modular scutcheon is red, at the same time check whether the indication red light is lighting, then can change the malfunction device.