NOVATEK-ELECTRO LTD Research-and-Manufacture Company PEF-301 ELECTRONIC HEALTHY PHASE SELECTOR (UNIVERSAL AUTOMATIC ELECTRONIC PHASE SWITCH) USERS MANUAL CONTROLS DESCRIPTION AND DIMENSIONS DIAGRAM 1. green LEDs indicating the phase the load is energized from 2. red LED indicating fault 3. control knob for Umax threshold setting, Umax 4. control knob for Umin threshold setting, Umin 5. control for autoreclosing time delay, Ton 6. control for time delay to return to the priority phase, Tr 7. connection terminals 8. connection terminals.- 2 - 1 APPLICATIONS The PEF-301 universal automatic electronic phase switch is designed to supply an industrial/ appliance single-phase 220V/50Hz load from three-phase four-wire mains 3x380+N in order to maintain uninterrupted power supply of essential single-phase loads and protect them against unallowable voltage variations in the mains. To this end a single phase load is connected into the three-phase mains with the interposition of the PEF-301. According to voltage presence and voltage quality on phases the PEF-301 will automatically select the optimum phase and switch the single phase load supply to this phase. Any power load is energized with the interposition of the PEF-301: if power is less than 3,5 kW (16A), the load is energized from the PEF-301 directly if power is more than 3,5 kW (16A), the PEF-301 controls magnetic starter single phase coils of the corresponding power. Reset delay to the priority phase, the maximum voltage threshold and the minimum voltage threshold are set by user. 2 TECHNICAL BRIEF Nominal Phase Voltage, V 220 Mains frequency, Hz 45-55 Trip threshold for Umin, V 160-210 Trip threshold for Umax, V 230-280 Adjustable reset delay, Ton, s 1-600 Return delay range to the priority phase, Tr, (5200), s present Return delay range to the priority phase, Tr, (200 -- ), s absent Fixed switch (de-energization) delay for Umin, s 12 Switch delay to reserve phases, s, not more than 0.2 Voltage hysteresis, V 5-7 Accuracy, V 3 Maximum switched current of output contacts, , no less than 16 Operating phase voltage, V 400 Transient withstand, V 450 Power consumption (under load), V, not more than 1.0 Life of output contacts: under load 16 A , operations, no less than 100 000 under load 5 A , operations, not more than 1 mln. Protection degree: apparatus IP40 terminal block IP20 Operating temperature, C from -35 to +55 Storage temperature, C from -45 to +70 Weight, no more than, kg 0.200 Case dimension, mm 52*88*65 Mounting 35 mm DIN-rail Mounting position arbitrary 3 OPERATION The PEF -301 is a digital microprocessor - based device. User sets trip thresholds of the PEF-301, i. e. the minimum and the maximum voltage thresholds on reaching of which the device trips and de-energizes a load (switches the load to a reserve phase). The PEF-301 is connected to the three-phase four-wire mains through the 1(L1), 3(L2), 5(L3), 6(N) input terminals. The phase L1 is the priority one, i. e. the load will always be energized from the L1 phase if voltage on this phase is present & within user-preset thresholds. The device performs monitoring of voltage presence & values on each phase and if the voltage value on the L1 goes outside the trip threshold range the PEF-301 effects the high speed (a switch delay is not more than 0.2 s) switching of the load to the phase where voltage value is within trip thresholds. If the voltages on both reserve phases are outside the preset trip voltage thresholds the load will be de-energized. Switching is performed successively from L1 to L2, from L2 to L3 (the corresponding LED indicator glows). Switching to the phase with unallowable parameters is not performed. After the load had been switched to reserve phases the monitoring of voltage presence & voltage value on the priority phase is going on and when the voltage parameters on this phase regenerated the load will be PEF-301 NOVATEK-ELECTRO