Đối tác

 



Logo Edicoms



          


Thống kê truy cập

Đang online: 51

Lượt truy cập: 613629

Thiết bị OBV4

Ngày đăng: 29/12/2014 .


Tên:Thiết bị OBV4

OBV4

PictureCẤU TẠO & N L HOẠT ĐÔNG 

 Gồm các biến trở oxít kim loại ( MOV) là thành phần chính của bộ phận cắt sét. Các lớp ( MOV) này ở điều kiện bình

thường có điện trở rất lớn không cho dòng điện chạy qua. Khi xuất hiện sóng đa hài bậc cao ( xung sét ) kết cấu ion bị phá

vỡ nối tắt dẫn dòng sét xuống hệ thống tiếp địa và giải phóng năng lượng.


ƯU ĐIỂM

* Kiểu bảo vệ IT, TN-S, TN-C & TN-C-S, khả năng tản xung sét (60 - 100)KA

* Điện áp hoạt động Uc~320V đến 385v

* Có tính thẩm mỹ cao tăng thêm tính mỹ quan cho công trình.

* Thích hợp với mọi môi trường.

* Lắp đặt và bảo dưỡng đơn giản.

* Hiệu quả kinh tế cao.

XUẤT XỨ

Thiết bị cắt sét OBV4 là sản phẩm của hãng Cuajeđược sản xuất từ China


THÔNG SỐ KỸ THUẬT OBV4

Surge Protection OBV4

Usage and application scope

OBV4 type SPD is series surge protective device (surge protector, surge power, surge arrestor, lightning protector ) is applied in A.C 50/60 Hz , 

≤380V electric power system such as TT , IT ,TN-S , TN-C and TN-C-S, and used at the equipotential connection of LPZ0A and LPZ31 zone or 

LPZ0B and LPZ1 zone, which protects the electric network shocked by the thunder or surge over voltage. 

The protector can be made connecting with remote signaling contact, which is a normal open contact. If one or more of modularof the protector is in 

malfuction, the contact will be closed, and sending the malfunction signal. The rated value of remote signaling contact is AC36V,1A. 

Maximum continuous operating voltage:   Uc 320, 385VAC

test classification:       II grade 

voltage protection level:    uP< 2.0 2.5 3.0 kV

max. discharging current (8/20µ s):    Imax 60 80 100kA

Nominal discharge current (8/20µ s):   In 30 40 60kA 

Model and meaning

Note: combination mode: 3-3 pole combination, public pole connects to the earth. 

3-3 pole combination, public pole connects to N 

pole combination, public pole connects to the earth 

Main Structure and Operating Principle

In 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

OBV4-60/3-385

OBV4-60/3N-385 

OBV4-60/4-385

OBV4-80/3-385 

OBV4-80/3N-385

OBV4-80/4-385

OBV4-100/3-385

OBV4-100/3N-385

OBV4-100/4-385 

Maximum continuous operating voltage Uc  385 V

Test grade  Class 2

Nominal discharge current In(8/20 µ s) kA  30kV  40kV  60kV

Maximum discharge current Imax (8/20 µ s) kA  60kV  80kV  100kV

Voltage protective level Up  2.0 kV  2.5 kV  3.0 kV

Response time ns  < 25 ns

Defending grade  IP20

Ambient temperature  -40----+85ºC

Color ( Mould )  Orange 
( Base )  Grey

Outer coveringmaterial  Reinforced fire-retardant nylon PBT

Phase Line , Zero Line  6 ----3 5mm2

Earth Line  6 ----3 5mm2

Signal Line  1.5 mm2

Accessory  According to the needs adding the remote signaling contact

Installation position and application 

1. SPD class B, functioning as an equi-potential connection in case oflightning.

2. Installed at the joint of the LPZOA, LZPOB and LPZ1 zones.

3. It is usually installed in low voltage main distribution cabinet connected to the incoming end ofthe buildings.

4. It adopts 35 mm DIN rail.

5. It is linked by 6 ---35 mm² copper wire

6. The cable should choose double color wire which is longer than 6mm².

7. In order to guarantee electrical network’s normal operating after protective device losing efficiency , the protective device which linked to the phase 

line must be connected a fuse box whose current is higher than 63A or a circuit breaker. 

Item

OBV4-60/3-320 

OBV4-60/3N-320

OBV4-60/4-320

OBV4-80/3-320

OBV4-80/3N-320 

OBV4-80/4-320

OBV4-100/3-320 

OBV4-100/3N-320

OBV4-100/4-320

Maximum continuous operating voltage Uc  320 V

Test grade  Class 2

Nominal discharge current In(8/20 µ s) kA  30kV  40kV  60kV

Maximum discharge current Imax (8/20 µ s) kA  60kV  80kV  100kV

Voltage protective level Up  2.0 kV  2.0 kV  2.5 kV

Response time ns  < 25 ns

Defending grade  IP20

Ambient temperature  -40----+85ºC

Color ( Mould )  Orange

( Base )  Grey

Outer covering material  Reinforced fire-retardant nylon PBT

Phase Line , Zero Line   6 ----3 5mm2

Earth Line  6 ----3 5mm2

Signal Line  1.5 mm2

Accessory  According to the needs adding the remote signaling contact