Audited Supplier
YUND-40
Low Voltage Circuit Breakers
Manual Type
Normal Type Circuit Breaker
Air
Fixed
MCCB
3
Circuit Breaker
Circuit-Breaker Failure Protection
ISO9001-2000, CE, CB, CCC
ELECAL
Carton
Wenzhou
Product Description
| Usage and application scope | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
YUND type SPD is series surge protective device (protector in short) 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 modular of 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 (8/20s): Imax 60 80 100kA Nominal discharge current (8/20s): 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
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| Installation position and application | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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 of the 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 6 mm2
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.ppearance and Installation Dimension
