What is BS EN IEC 63052 about?
BS EN IEC 63052 applies to devices for power frequency overvoltage protection referred as "POP" for household and similar uses, with a rated frequency of 50 Hz, 60 Hz or 50/60 Hz, with rated voltage not exceeding 230 V AC (between phase and neutral), and with rated current not exceeding 63 A. It consists of a functional unit in combination with a main protective device (MPD), or as one single device having opening means able to open the protected circuit in specified conditions.
POPs according to BS EN IEC 63052 are suitable for use in an IT system provided all active conductors are switched. BS EN IEC 63052 are intended for use in an environment with pollution degree2 and advantage category3.
Note 1: BS EN IEC 63052 does not apply to protection against common mode overvoltage's.
Note 2: BS EN IEC 63052 does not apply to surge protective devices.
Note 3: BS EN IEC 63052 are intended for use in an environment with pollution degree2 and advantage category3.
Note 4: BS EN IEC 63052 suits for use in an IT system provided in all active conductors are switched and are suitable for isolation.
Who is BS EN IEC 63052 for?
BS EN IEC 63052 on power frequency overvoltage protective devices is use in:
- Manufactures of electronic devices for power frequency/circuit breakers
- Service providers and installers for electronic device in power frequency /circuit breakers
- Suppliers and dealers of electronic device for power frequency /circuit breakers
- Retailers and distributors of electronic device in power frequency /circuit breakers
Why should you use BS EN IEC 63052?
Power frequency overvoltage is a transient overvoltage generally caused by bad connections or breakage of the neutral conductor., which may affect conductor, electric transmission line It is considered as POP when there is increase in voltage range above threshold value of the effective normal value for a longer period.
According to BS EN IEC 63052 POPs can be designed as a POP unit assembled to or integrated in a main protective device by the manufacturer or as an assembly of a main protective device mechanically or electrically coupled on site with the POP unit, or as one single POP having opening means able to open the protected circuit in specified conditions.
POP as per BS EN IEC 63052 is intended to mitigate the effects of power frequency overvoltage's between a phase and neutral conductor for downstream equipment by opening the protected circuit when an overvoltage between phase and neutral is detected.
BS EN IEC 63052 is intended for monitoring one line-to-neutral conductor voltage that can be used between two-phase conductors in a phase-to-phase electrical supply system not exceeding 230 V if both conductors are switched and declared as such by the manufacturer.
What’s changed since the last update?
BS EN IEC 63052:2021 supersedes BS EN 50550:2011+A1:2014, which will be withdrawn.
