Certificate history:
Ex e px IIC T3 Gb
This certificate is issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with the IEC Standard list below and that the manufacturer's quality system, relating to the Ex products covered by this certificate, was assessed and found to comply with the IECEx Quality system requirements. This certificate is granted subject to the conditions as set out in IECEx Scheme Rules, IECEx 02 and Operational Documents as amended.
This Unit verification certificate is issued as verification that the Apparatus identified on page 1, was assessed and tested and found to comply with the IEC Standard list below. This certificate is granted subject to the conditions as set out in IECEx Scheme Rules, IECEx 02 and Operational Documents as amended.
STANDARDS: The electrical apparatus and any acceptable variations to it specified in the schedule of this certificate and the identified documents, was found to comply with the following standards:
As this is a Unit Verification Certificate, no QAR is applicable as this certificate is specific to the items listed by serial number or other unique identification.
Conditions of Certification continued4. The pressurisation and purging system attached to the enclosures shall be subjected to a test to demonstrate effective operation under the following conditions:-a. Underpressure - The low pressure switch is to operate if the enclosure overpressure falls below the minimum specified above (e.g. if an inspection panel is opened).b. Purge flow failure - The purging system (including the timer) is to reset to the beginning of the purge cycle if the purging air flow rate (measured at the outlet) falls below the minimum specified above (e.g. the supply restricted during purge).c. Supply pressure failure -The low pressure switch is to operate when or before the enclosure overpressure falls below the minimum specified above (e.g. the supply restricted after purge).5. For correct operation the on-site pressurising air supply must be capable of providing a minimum of 500 l/min (0.5 m3/min) for leakage compensation.6. The heating element supply circuit is to be interlocked such that the heaters cannot be energised whilst the motor is running, and this supply circuit is to include a suitable protection device as detailed in IEC 60079-7.7. The resistance temperature detectors included in the stator windings on this machine are to be separately protected (i.e. by connection to an intrinsic safety circuit), or automatically disconnected in the event of a purge/pressurisation failure. 8. Precautions shall be taken to guard against danger from high temperature and voltage in the secondary circuit of the current transformers in the event that the secondary circuit, external to the pressurised enclosure, becomes open-circuit. 9. This motor is supplied with bearing insulation, the user is responsible for checking the effectiveness of such installations at appropriate intervals, e.g. by the use of a 100V insulation tester and by visual inspection to ensure that no unpainted, unearthed metal can be shorted to earth.10. The minimum specified cooling water flow rate is 440 l/min at a maximum temperature of 33°C.11. The attention of the user is drawn to the need to ensure that certified ancillaries are appropriate for the conditions of use and are interconnected in accordance with IEC 60079-14. The Conditions of Certification, or Schedule of Limitations as appropriate for individually certified units (equipment or component), remain applicable to the units fitted to this motor.
