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NOVATEK-ELECTRO
PEF-305
Rated output voltage
230 V AC
Voltage hysteresis
10 V AC
Priority phase
L1
Maximum load capacity of the output
16 Afor devices of classAC1
Relative error of voltage measurement, %, less than
1
Switching threshold voltageL1,L2,L3, V AC, less than
180
Rated power consumption
1.7 W/3.8 VAin three phases
Electric shock protection class
II
Overvoltage category
II
Permissible contamination level
II
Position in space
arbitrary
Overall dimensions, mm
90x35x66
Weight
0.14 kg
Terminals of the device allow connecting wires to them with a cross section of 0.2 to 2.5 mm
2
Installation on a standard 35 mm DIN rail
The device meets the requirements of:
EN 60669-1, EN 60669-2-1, EN 61000-4-2,3,4,5,6,11
Harmful substances in quantities exceeding the maximum permissible concentration are absent.
3
DESIGN AND PRINCIPLE OF OPERATION
3.1 Design
The device is made in a plastic case designed for mounting on a 35 mm DIN-rail, 2 modules are of type S. The
case is made of impact-resistant, self-extinguishing plastic. A sketch of the case with overall and mounting
dimensions is shown in Fig. 1.
3.2 Principle of operation of PEF-305
The
electronic
phase
switch
PEF-305
is
a
microprocessor-based digital device.
After the supply voltage PEF-305 is ready for
operation. If the value of the voltage on phase L1 is
greater than 180 V AC, it will automatically switch to
phase L2 within less than 150 ms. Similarly, if the voltage
of phase L2 drops below 180 V AC, it will automatically
switch to phase L3.
A voltage drop in phase L3 below 180 V AC will cause
the power supply to the load connected to the output to
be turned off. If this phase shuts down due to a decrease
in voltage below 180 V AC, it will turn on again at a value
of more than 190 V AC (10 V hysteresis). The priority is
the L1 phase. If the parameters of phase L1 are normal,
the load will always be powered from this phase.
Example:
- If the load is powered from phase L3 and the normal
parameters of phase L1 are restored, the automatic
switching to phase L1 will occur. If the voltage on this
phase is more than 180 V AC, the corresponding LED
lights up. Voltage values below 180 V AC are indicated
by the LED off. Time for this phase off and on is the same
and is 150 ms.
Fig. 2-
Connection diagram
4 PREPARATION FOR OPERATION AND INSTRUCTIONS FOR OPERATION
4.1 General instructions
Prepare cables for connecting the device to the power source and external devices. To ensure the reliability of
electrical connections, it is recommended to use copper wires, the ends of which should be carefully cleaned to 5
±0.5 mm before connecting. Stripping of cable cores should be done so that their bare ends do not protrude beyond
the terminal block after connecting to the device. Recommended wire size is 0.2 - 2.5 mm².
An error during installation can damage the device and the devices connected to it.
Fastening of wires should exclude mechanical damage, twisting and wearing wire insulation.
The relay is manufactured completely ready for operation and does not require special preparations for
operation. In connection with the use of digital technology, the settings in the relay are precisely adjusted; therefore,
