Auto phase switch is designed to supply industrial and household appliance single-phase 220V/50Hz loads from three-phase four-wire mains 3×380+N with the purpose of maintaining uninterrupted power supply of essential single-phase loads and protect them against unallowable voltage variations in the mains.
Depending on voltage presence and voltage quality on phases, the PEF-301 will automatically select the optimal phase and promptly switch the single phase load supply of any wattage to this phase。
Technical data
|
Supply terminals |
N,L1,L2,L3 |
|
Rated supply voltage |
AC 3 * 220V(N-L1/L2/L3) |
|
Rated frequency |
50Hz |
|
Umax setting range |
220-300V |
|
Umin setting range |
120-210V |
|
Auto-reclosing delay(Ton) |
1-600s |
|
Return delay to priority phase |
5-200s/OFF |
|
Switch delay to reserve phases |
<0.2s |
|
Voltage hysteresis |
5V |
|
Overvoltage trip delay |
0.1s; ≥350V: 0.02s |
|
Undervoltage trip delay |
5s |
|
Voltage accuracy |
<1% |
|
Max. operating phase voltage |
400V |
|
Rated operating current |
63A |
|
Max. operating current |
80A |
|
Pollution degree |
3 |
|
Electrical life |
105 |
|
Mechanical life |
106 |
|
Altitude |
≤2000m |
|
Ambient temperature |
-25℃~+50℃ |
|
Permissable relative humidity |
≤50% at 40℃（without condensation) |
|
Storage temperature |
-25℃~+55℃ |
|
Conductor size |
0. 5mm2~1mm2 |
Front-face panel
Function diagrams
Wiring diagrams
Address: Longjing industry zone, Yueqing, Zhejiang, China 325604
Tel: +86-577 61770106
Fax: +86-577 61770107
Email: director@reletek.cn
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