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Idiomas disponibles
Idiomas disponibles
13.3
Ex rating
13.3.1
Identification of Ex-rated pumps
13.3.2
Protection class
13.3.3
Intended use
Installation and operating instructions Wilo Motor T 12 ... 72 + EMU FA, Rexa SUPRA, Rexa SOLID
Appendix
▪ Use shielded power supply cables.
Summary
▪ Continuous duty up to rated frequency (50 Hz or 60 Hz), observing the minimum flow veloc-
ity.
▪ Observe additional measures with regard to EMC regulations (choice of frequency converter,
using filters, etc.).
▪ Never exceed the rated current or rated speed of the motor.
▪ It must be possible to connect the motor's own temperature monitor (bimetallic strip or PTC
sensor).
This section contains further information on the operation of the pump in an explosive at-
mosphere. All personnel must read this section. This section applies to Ex approval pumps
only!
For use in explosive atmospheres, the pump must be marked as follows on the rating plate:
▪ "Ex" symbol for the relevant approval
▪ Ex classification
▪ Certification number (depending on the approval)
The certification number, if required by the approval, is printed on the rating plate.
The motor's design version corresponds to the following protection classes:
▪ Flameproof enclosure (ATEX)
▪ Explosionproof (FM)
▪ Flameproof enclosures (CSA-EX)
In order to limit the surface temperature, the motor must be equipped with at least one
temperature limiter (1‑circuit temperature monitoring). A temperature controller (2‑circuit
temperature monitoring) is possible.
DANGER
Explosion due to pumping explosive fluids!
Pumping highly flammable and explosive fluids (benzene, kerosene etc.) in their pure
form is strictly forbidden. There is a risk of fatal injury due to explosion! The pumps are
not designed for these fluids.
ATEX approval
The pumps are suitable for operation in potentially explosive atmospheres:
▪ Device group: II
▪ Category: 2, zone 1 and zone 2
These pumps must not be used in zone 0!
FM approval
The pumps are suitable for operation in potentially explosive atmospheres:
▪ Protection class: Explosionproof
▪ Category: Class I, Division 1
Notice: If the cabling is carried out according to Division 1, installation in Class I, Division 2 is
also permitted.
CSA-Ex approval according to division (Motor T 12, T 13, T 17, T 17.2, T 20, T 34)
The pumps are suitable for operation in potentially explosive atmospheres:
▪ Protection class: Explosion-proof
▪ Category: Class 1Division 1
en-US
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