ETI EPF-43, EPF-44 Manual

Table of Contents

Contents

1 DESCRIPTION
2 OPERATING PRINCIPLE
3 ASSEMBLY
- 3.1 TECHNICAL SPECIFICATION
- 3.2 CONNECTING DIAGRAM
4 WARRANTY CONDITIONS
5 MARKS
6 Documents / Resources
- 6.1 References
- 6.2 Download manual

DESCRIPTION

Automatic phase switches are designed to ensure continuity of the work of single-phase receivers (using three-phase network or three different voltage supplies with common zero „N") and protect them against undesirable voltage drops.

EPF series switches are equipped with micro-switch to set the priority of phase L1 („1" – priority on; „0" – priority off), LED diodes that inform which phase is currently chosen (meaning: which phase is used to power the receiver). EPF-44 is additionally equipped with threshold adjustment knob.

OPERATING PRINCIPLE

Automatic phase switches control the voltage on the particular phases. In case of voltage disappearance or decline (below the set threshold) at the phase that is currently used to power the receiver, EPF automatically switches the load on a phase with correct parameters.

L1 PRIORITY MODE (micro-switch position „1"): L1 phase is regarded as the basic and the other two as a reserve. Load is switched on reserve phase only temporary. The load is switched back to L1 phase automatically every time it has the correct parameters.
L1 PRIORITY SWITCHED OFF (micro-switch position „0"): The receiver will be powered from any phase until its voltage drops below the set threshold or totaly disappears. This working mode allows to limit the switching frequency.

ASSEMBLY

Assembly should be done by a qualified electrician.

Turn off the power.
Mount EPF switch on the TH 35 rail in the switchboard (after assembly is finished terminals of the appliance shouldn't be easily accessible).
Connect the cables with the terminals according to connecting diagram.
Turn on the power.
For EPF-44 – set the threshold using the adjustment knob located at the front panel of the appliance.
Check proper operation of automatic phase switch: turn off phase L1, next – phase L2 and then turn on phase L2 and finally phase L1.

TECHNICAL SPECIFICATION

Power supply	3 x 400/230 V ~ + N or 3 x 230 V~ + N
Output supply	230 V~
Direct load current	≤ 16 A 250 V~ AC1*
Activation threshold	EPF-43: approx. 180 V (factory setting)
Activation threshold	EPF-44: approx. 180 ÷ 210 V (smooth adjustment)
Hysteresis	approx. 10 V
Dwell time switching	approx. 150 ms
L1 priority adjustment	1/0 - micro-switch (1 - ON / 0 - OFF)
Section of connecting cable	0,5 ÷ 2,5 mm² **
Torque	max. 0,5 Nm
Working temperature	-15°C ÷ +45°C
Dimensions	3 modules (52,5 x 90 x 65 mm)
Mounting	at TH 35 rail (PN-EN 60715)
Protection class	IP 20
Weight	133 g

* EPF-44: For receivers current > 16 A using external contactors with appropriate contact load is necessary. ** Connecting two wires f section ≥ 2,5 mm² with one terminal is not possible.

DIMENSIONS

CONNECTING DIAGRAM

Direct power supply for one-phase receiver

B1 - appropriate for a given load (max 16A)
External contactors controlling

B1 - appropriate for the coil

WARRANTY CONDITIONS

Warranty does not cover damages:

arose during shipment;
caused by mounting and/or operating not in accordance with the instruction manual;
caused by unauthorized modifications in the product done by user or by third party;
caused by a random event, that producer is not responsible for.

MARKS

This symbol on the device means that used equipment can not be disposed of with other waste from the household. The used equipment needs to be delivered to one of the designated electrowaste collection points or returned to the store at the time of purchase of new equipment. Improper disposal of electrowaste threatens the environment and human health.
Product compatibility with: the Low Voltage Directive LVD 2014/35/EU, the Electromagnetic Compatibility Directive EMC 2014/30/EU, the Restriction of Hazardous Substances Directive RoHS 2 2011/65/EU.

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