UL 1004-5 2009 pdf download – Fire Pump Motors.
9 Frame and Enclosure 9.1 A fire pump motor enclosure shall be rated a minimum of Type 2, Dripproof, or shall be provided with the instructions specified in 45.1 to indicate a Type designation required for the use environment. The Type designation shall be in accordance with the Standard for Enclosures for Electrical Equipment, UL 50. PERFORMANCE 29 General 29.1 The voltage of the test circuit for the performance tests shall be at rated voltage unless stated otherwise in the individual tests. 29.2 The tests are capable of being conducted in any order, as long as the Dielectric Voltage-Withstand Test, Section 36 of UL 1 004-1 , is conducted on a motor in a heated condition. 29.3 When a single motor sample is used for several or all tests, only one Dielectric Voltage-Withstand Test, Section 36 of UL 1 004-1 , shall be performed on the sample. It shall be performed after all other tests for that sample have been completed and the motor sample is in a heated condition. When a single motor sample is used for each test, the Dielectric Voltage-Withstand Test, Section 36 of UL 1 004-1 , shall be performed as required on each sample. 30 Variation From Rated Voltage Test 30.1 An induction fire pump motor shall operate when subjected to a voltage of 1 0 percent higher and 1 0 percent lower than the nameplate voltage for each voltage rating. For motors with a voltage range, the test specified in 30.2 shall be performed on the highest voltage for the 1 1 0 percent test and the lowest voltage for the 90 percent test.
30.2 One sample of a fire pump motor is to be connected to a source of supply and loaded to rated horsepower, times any rated service factor. The motor is to be operated at rated frequency and voltage. The voltage is then to be reduced to 90 percent of the rated voltage and operated for one minute. The voltage is then to be increased to 1 1 0 percent of the rated voltage and operated for one minute. 31 Temperature Test 31 .1 The Temperature Test specified in Section 31 of UL 1 004-1 is to be conducted with the machine under test delivering full rated mechanical output. This test is then to be repeated with the machine under test delivering full rated mechanical output, multiplied by any service factor if provided.