Novatek Electro India Private Limited
Novatek Electro India Private Limited
Patparganj Industrial Area, Delhi
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Auto Phase Selector Switches

The Universal Automatic Electronic Phase Switch (single-phase automatic throw-over breaker) 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. For this purpose, a single-phase load is switched into a three phase circuit. Depending on voltage presence and voltage quality on phases the PEF-301 will automatically select the optimum phase and promptly switch the single phase load supply to this phase. A phase prioritization is foreseen, i.e. the device restores the supply circuit to the user-selected priority phase after switching to reserve phases and regenerating the voltage on the priority phase.

Automatic Electronic Phase Selector PEF-319

Automatic Electronic Phase Selector PEF-319
  • Automatic Electronic Phase Selector PEF-319
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Product Details:

Voltage220 - 240 V AC
Current30A AC (6.5kW)

The PEF-319 universal automatic electronic phase switching device is designed to supply an industrial and domestic single phase 220/230/240 V, 50 Hz 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. According to the voltage presence and voltage quality on the phases, the PEF-319 will automatically select the optimum phase in limits range set by user and switch the single phase load supply to this phase:- If power is less than 6.6 kW (30 A), the load is energized directly from the PEF-319;- if power is more than 6.6 kW (30 A), the PEF-319 controls the magnetic contactor (MC) single phase coils of the corresponding power (MC are not included in supply complete package). The maximum and minimum voltage limits are set by user adjusting the potentiometers on the front panel as per requirement.

The electronic phase switch PEF-319 is a microcontroller-based digital device. User should make setting of trip threshold limits of PEF-319 - the minimal and maximal voltage values at which PEF-319 trips and switches off the load (or switches over to another phase). Phase L1 has the highest priority. It means that at normal parameters of voltage on all phases connected to PEF-319 (L1>L2>L3), the load will always be energized from phase L1. If on L1 the value is out of limits set by user, PEF-319 switches the load to the nearest by priority phase in not more than 0.2 seconds if the its voltage corresponds to the normal level. If the voltage on the reserve phases does not correspond to the trip set limits the load switches off. After the load had been switched to another phase and the voltage parameters had been restored on the priority phase, the load will be switched back to the priority phase in return time r (from 5 to 200 sec, settable) set by user. If r is in the position “∞”, the return to the priority phase will be performed only when voltage on the other phase goes out of the threshold limits.

In case when the voltage supplied on load goes lower than the minimal threshold limit the load switching over or switching off should be performed with a time delay of 12 seconds. When the voltage goes higher than the maximal threshold limit or goes 30 V lower than the minimal threshold limit, the load switching over or switching off will be performed with time delay of 0.2 seconds. During the load switching off the PEF-319 continues to perform the voltage control on all phases. When the voltage normalizes within the limit range on one of the phases the PEF-319 will switch the load to this phase within the time period of on. The additional relay will switch on if the load is connected to any phase and provides the voltage commutation less than 30 A. The additional relay terminals are insolated and designed for enhancement of device functional possibilities. PEF-319 is designed with an internal blocking system (electrical interlocking) against sealing of relay output inbuilt contacts and with control of state of magnetic contactors power contacts in external circuit (the terminal 1 is used for sealing control, figure 3). If at least one contact is switched on («sealed»), PEF-319 will be blocked, the phase switching over is not performed, the red LED indicator ALARM is flickering and the green LED indicator shows the phase on which the sealing took place, and the digital display will for a short time show the code of alarm and number of relay (MS) of sealed phase (for example, code “2” means a sealed contact on phase L2). Unblocking of PEF-319 should be made by its de-energizing (switing off).

Model Number:PEF-319
Brand:NOVATEK-ELECTRO
Application:Automatic single phase selection from 3 phase input in terms of voltage, availability and priority.
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Additional Information:

  • Item Code: PEF-319
  • Port of Dispatch: New Delhi
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Automatic Phase Selector

Automatic Phase Selector
  • Automatic Phase Selector
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Product Details:

Voltage 220 - 240 V AC

PEF-301 universal automatic electronic phase switch is designed to supply industrial and household appliance single-phase 230V/50Hz loads from three-phase four-wire mains 3x230+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:

 

  • Loads of wattage up to 3 kW (up to 16A) get power supply directly from PEF-301
  • When wattage exceeds 3 kW (16A), PEF-301 phase switch will control the magnetic starters (MS) coils of corresponding wattage (MS can be supplied optionally)


Documentation for this device

 


Output Voltage:220 - 240 V AC

Application:Selection of best phase among 3 phase input, swichover to live phase in case of phase cut

Power Factor:1

Input Voltage:220 - 415 V AC

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Additional Information:

  • Item Code: PEF-301
  • Port of Dispatch: New Delhi
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Debashish Ghosh (Director)
C - 30, Patparganj Industrial Area F.I.E.
Delhi -110092,India


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