SCB series backup protector for SPD
SCB series backup protector for SPD
The fuses or circuit breakers currently used in large quantities with SPD are incompatible with the following three points
1. When the lightning current strikes, it is broken by mistake and is easily damaged-SPD cannot play the function of lightning protection;
2. When the SPD is short-circuited, the power frequency will not be interrupted. When the SPD fails or the line current is not large when the short-circuit occurs, it is difficult to meet the breaking current requirements of the fuse and the circuit breaker. Cause a fire accident;
3. When the lightning current strikes, the residual voltage is high-the reliability of equipment lightning protection is reduced. In response to the inconsistency of the above products, our company has developed this series of SPD backup protectors after long-term research and development and a large number of tests, which can effectively coordinate with the SPD to realize the lightning protection function, and solve the use of fuses or circuit breakers as SPDs. The backup protector has potential safety hazards
The direct effect of the combination of this product and SPD is: under the impact of large lightning, it will not be interrupted to ensure the effective performance of the lightning protection function; when the SPD fails, the small power frequency current flows through and is quickly disconnected to ensure the safety of the power grid and electricity use.
Product structure and performance characteristics.
1. when transient overvoltage occurs in power line, SPD conduction will break through short circuit, which will cause power trip and accident. after SCB backup protector is installed, circuit can be quickly disconnected when transient overvoltage short circuit occurs in SPD, so as to avoid accidents caused by SPD breakdown.
2. When lightning passes through, SCB backup protector can effectively avoid false tripping, so that surge protector is always in an effective state, ensuring the safety of electricity consumption.
Features
●Parametric control trip mechanism, analysis of actual selection of passing current
●The impulse current is horribly low, which is comparable to the fuse
●High-energy contacts, long service life;
●Micro-off appearance, small size, convenient for power off to match SPD
●Complete specifications, meeting the requirements of SPD 11, T2, and T3;
●35m rail installation, in line with installation needs all over the world.
Product Size
The backup protector plays a very important role, but it depends on whether your products are of good quality. Good quality will play a great role. You should use the backup protector for lightning protection. The direct effect of the backup protector produced by LEIHAO Lightning Protection Company and SPD is that the SPD backup protector will not be broken under heavy lightning impact; After SPD breaks down, the small power frequency current flow is cut off quickly to ensure the safety of power grid and power consumption.
When transient overvoltage occurs in the power supply line, the SPD is turned on, which will lead to power trip and accidents. After installing SCB backup protector, the circuit can be quickly disconnected when SPD is short-circuited by transient overvoltage, thus avoiding accidents caused by SPD breakdown. When lightning passes through, the SCB backup protector can effectively avoid false tripping, so that the surge protector is always in an effective state, ensuring the safety of power consumption.
LH-SCB-40/2p
Maximum continuous operating voltage Uc 230V~
Maximum discharge current Imax 40KA
Appearance: white gray, non-linked
LH-SCB-40/4p
Maximum continuous operating voltage Uc 230V~
Maximum discharge current Imax 20KA
Appearance: white gray, non-linked
LH-SCB-40/4p
Maximum continuous operating voltage Uc 230V~
Maximum discharge current Imax 20KA
Appearance: white gray, non-linked
Technical parameter
|
Model |
LH-SCB-20 |
LH-SCB-40 |
LH-SCB-60 |
LH-SCB-80 |
LH-SCB-100 |
LH-SCB-15G |
|
Non-tripping impulse current Ie |
20KA（8/20） |
40KA（8/20） |
60KA（8/20） |
80KA（8/20） |
100KA（8/20） |
15KA（10/350） |
|
Non-tripping impulse current withstand capability |
10KA（8/20） |
20KA（8/20） |
30KA（8/20） |
40KA（8/20） |
60KA（8/20） |
15KA（10/350） |
|
20KA（8/20） |
40KA（8/20） |
60KA（8/20） |
80KA（8/20） |
100KA（8/20） |
15KA（10/350） |
|
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Rated working voltage Ue |
230VAC |
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Rated insulation voltage Ui |
400VAC |
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Current trip value Io |
3V±1A |
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Power frequency short circuit current breaking time Tcs |
≤40ms |
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Power frequency load current breaking time To |
≤50ms |
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Mechanical life |
≤4000 times |
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Electrical life |
≤4000 times |
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Enclosure rating |
IP20 |
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Crimping screw |
M5 |
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Minimum area of connecting cable |
2.5mm²/flexible |
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Maximum area of connecting cable |
25mm²/flexible |
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Maximum allowable working current of remote signal contact |
2A/250VAC normally closed or normally open (default normally closed) |
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shell material |
PBT UL94V0 |
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Dimensions |
91*73*17.8mm |
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Relationship between protection action and ambient temperature |
Switch within -25℃~-60℃ |
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Storage environment |
Temperature -40℃~-75℃ Relative humidity: <95% (under 25℃) |
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working environment |
Temperature -25℃~-60℃ Relative humidity: <95% (under 25℃) |
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Install the rail |
EN60715(35mm) |
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1. The power supply must be cut off before installation, and live operation is strictly prohibited.
2. When installing, please connect according to the installation diagram, where L, L1, L2, and L are the phase wires, N is the neutral wire, and PE is the ground wire. Do not connect it wrongly. After the installation is complete, close the SCB surge backup protector and check whether the working status is normal
●The connecting wire must be firm and reliable, and it must be short, thick and straight.
