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| MYS4
Varistor & FLX2 Over-voltage Protector |
| FLX2 POWER
SUPPLY OVER-VOLTAGE PROTECTOR UNIT |
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| FLX2 supply overvoltage protector unit is one
of low-voltage power supply .It is mainly used in the power protect of
railway, traffic, communication, factory, enterprise, scientific search, organ and etc. It
is combined by tri-block small type disconnector, MYS4 overvoltage protector, sound and
light warning device etc, and fit with the incorporate installation rail and standard
outdoor hang-trunk. |
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In case of high pulse voltage caused by thunder storms
or other reasons protector would absorb the surge energy and release it to the safety
earthing line in the shortest time. so the electronic equipment and apparatus in the power
system would be protected from damage caused by the strike of overvoltage.
There are two types of such overvoltage protector unit--220V
and 380V. The relative requirement of nominal current of disconnector and the max. peak
current of overvoltage can be selected by the client's demand.
MAIN FEATURE
- It has over-current protect device and deterioration
indicator, so the fire caused by the overvoltage deterioration failure will be avoided.
- It has the strong ability of energy absorption, low clamping
voltage, and fast response and etc, can take the role in protecting power supply.
- The installation and maintenance are easy and fast because of
it's combination construction and unique connection.
- The overvoltage protector need not to be tested ,it resolves
the difficult of inspecting the fuse overvoltage protector at any time.
- It has excellent sound-light warning device, can trace the
operation of power supply protector unit at any time.
TECHNICAL DATA OF MYS4 OVER-VOLTAGE PROTECTOR
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GENERAL USED PART NO. |
| MYS4-430/20 |
MYS4-560/20 |
MYS4-620/20 |
MYS4-910/20 |
| Nominal voltage V1mA |
430 |
560 |
620 |
910 |
| Max.
continuous operating voltage |
(DC)
Umax (V) |
| (AC)
Umax (V) |
|
350 |
468 |
505 |
745 |
| 275 |
356 |
385 |
550 |
| Max. peak current (8/20µs) I1p(KA) |
20 |
| Limit peak current (8/20µs) IIim(KA) |
40 |
| Residual voltage with relevant current (8/20µs) |
Is=1KA |
0.76KV |
1.0KV |
1.1KV |
1.6KV |
| Is=5KA |
0.95KV |
1.2KV |
1.3KV |
1.9KV |
| Is=10KA |
1.15KV |
1.4KV |
1.6KV |
2.2KV |
| Is=15KA |
1.25KV |
1.5KV |
1.7KV |
2.4KV |
| Is=20KA |
1.35KV |
1.6KV |
1.8KV |
2.6KV |
| IIim=40KA |
1.85KV |
2.1KV |
2.2KV |
3.6KV |
Energy withstand (2000µs) ip |
200A |
| Response time t |
<25 ns |
ELECTRICAL PRINCIPLE DIAGRAM OF MYS4 OVER-VOLTAGE
PROTECTOR
1.Heat Fuse 2.Current Fuse 3. Varistor
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