IG-273-EN version 03; 05/08/2020
9
General instructions
cpg.0 ENA range
General description
1.4. Voltage presence indicator
The voltage presence-absence indicator installed in the
cpg.0 cubicles is designed and built in accordance with the
recommendations set out in Standard IEC 61243-5, within
the integrated detectors without auxiliary power supply
category.
The unit has three light signals corresponding to phases
L1, L2 and L3. On the front of the indicator, a test point is
accessible for each of the phases and earth, which is used
to test the balance of all phases. We recommend use of any
universal phase comparator which complies with standard
IEC 61243-5. As an option, the detection unit has a free
auxiliary contact for remote indication of voltage presence/
absence.
The device indication complies with the requirements laid
down in standard IEC61243-5:
• ABSENCE OF VOLTAGE: U (*) < 10 % U
r
**
• UNCERTAINTY: 10 % U
r
< U < 45 % U
r
• VOLTAGE PRESENCE: U> 45 % U
r
(*) U = phase-to-earth voltage
** U
r
= rated operating voltage
The presence of voltage is indicated by activation of the
LEDs for each of the phases. If the presence of voltage is not
detected, the LEDs for each of the phases remain unlit.
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