Lightening-Surge Arrestor

Lightening-Surge Arrestor

Lightening-Surge Arrestor

surge arrester is a device to protect electrical equipment from over-voltage transients caused by external (lightning) or internal (switching) events. Also called a surge protection device (SPD) or transient voltage surge suppressor (TVSS), this class of device is used to protect equipment in power transmission and distribution systems. (For consumer equipment protection, different products called surge protectorsare used.) The energy criterion for various insulation material can be compared by impulse ratio, the surge arrester should have a low impulse ratio, so that a surge incident on the surge arrester may be bypassed to the ground instead of passing through the apparatus.

To protect a unit of equipment from transients occurring on an attached conductor, a surge arrester is connected to the conductor just before it enters the equipment. The surge arrester is also connected to ground and functions by routing energy from an over-voltage transient to ground if one occurs, while isolating the conductor from ground at normal operating voltages. This is usually achieved through use of a varistor, which has substantially different resistances at different voltages.

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100VDC. IN 40KA, IMAX 12.5KA SURGE ARRESTER

100VDC. IN 40KA, IMAX 12.5KA SURGE ARRESTER Class: 1+2 No of poles: 2 Imax 8/20: – In 80/20: 40kA limp 10/350: 12.5kA Up: 1.9kV Uc: 1000VDC DIN Width: 3 Auxiliary: Y

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R3,646.86

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1000VDC. IN 20KA, IMAX 40KA DC SURGE ARRESTER

1000VDC. IN 20KA, IMAX 40KA DC SURGE ARRESTER Class: 2 No of poles: 3 Imax 8/20: 40kA In 80/20: 20kA Up: 3.0kV Uc: 1000VDC DIN Width: 3 Auxiliary: N

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R3,760.86

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550VDC. IN 20KA, IMAX 40KA DC SURGE ARRESTER

550VDC. IN 20KA, IMAX 40KA DC SURGE ARRESTER Class: 2 No of poles: 2 Imax 8/20: 40kA In 80/20: 20kA Up: 2.2kV Uc: 550VDC DIN Width: 2 Auxiliary: N

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R2,278.86

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3P 880V 40kA 8/20 CLASS 2 SURGE ARRESTER FOR INVERTORS

3P 880V 40kA 8/20 CLASS 2 SURGE ARRESTER FOR INVERTORS No of poles: 3 Max Discharge 8/20us: 40kA Nominal Discharge 8/20us: 15kA Up: <3.2kV Uc: 880VDC Uoc stc: 160VDC DIN Width: 3  

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R3,304.86

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3P 1000VDC 40kA 8/20 SURGE ARRESTOR FOR PHOTOVOLTAIC

3P 1000VDC 40kA 8/20 SURGE ARRESTOR FOR PHOTOVOLTAIC No of poles: 3 Max Discharge 8/20us: 30kA Nominal Discharge 8/20us: 15kA Up: 4kV Uc: 500VDC Uoc stc: 1000VDC DIN Width: 3  

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R1,822.86

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3P 700VDC 40kA 8/20 SURGE ARRRESTOR FOR PHOTOVOLTAIC

3P 700VDC 40kA 8/20 SURGE ARRRESTOR FOR PHOTOVOLTAIC No of poles: 3 Max Discharge 8/20us: 40kA Nominal Discharge 8/20us: 20kA Up: 3.6kV Uc: 350VDC Uoc stc: 750VDC DIN Width: 3  

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R1,822.86

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2P 600VDC 40kA 8/20 SURGE ARRESTOR FOR PHOTOVOLTAIC

2P 600VDC 40kA 8/20 SURGE ARRESTOR FOR PHOTOVOLTAIC No of poles: 2 Max Discharge 8/20us: 40kA Nominal Discharge 8/20us: 20kA Up: 4.0kV Uc: 500VDC Uoc stc: 750VDC DIN Width: 2  

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R1,254.00

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2P 170VDC 40kA 8/20 SURGE ARRESTOR FOR PHOTOVOLTAIC

2P 170VDC 40kA 8/20 SURGE ARRESTOR FOR PHOTOVOLTAIC No of poles: 2 Max Discharge 8/20us: 40kA Nominal Discharge 8/20us: 15kA Up: 0.8kV Uc: 170VDC DIN Width: 2  

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R1,254.00

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