UL 1004-9 -2016 pdf download – Form Wound and Medium Voltage Rotating Electrical Machines.
9.2 The applied potential is to be gradually increased until the required test value is reached. 9.3 Accessory devices (such as space heaters, thermostats, thermocouples, thermistors, RTDs, ETDs, and the like) in contact with the winding but supplied from a separate circuit, are to be connected to the frame or core during machine winding high-potential tests. 9.4 During the accessory testing, all other machine windings and components shall be connected together and to the frame or core. 10 Temperature Test 10.1 The Temperature Test is to be conducted with the machine under test supplied with rated voltage and delivering full rated output power multiplied by any service factor. Exception No. 1: Alternatively, the machine may be tested using any ofthe test methods described in IEC 60034-29, Rotating electrical machines – Part 29: Equivalent Loading and Superposition Techniques – Indirect Testing, or test methods under the Temperature Test of IEEE 112, Standard Test Procedure for Polyphase Induction Machines and Generators. Exception No. 2: Formotors greaterthan 500 hp where the test cannot be conducted at rated output, the tests can be conducted at points below rated load to extrapolate a calculated temperature rise at rated output. Exception No. 3: Othermethods ofloading the machine and measuring temperatures may be employed if found to yield equivalent results. 10.2 The Temperature Test is to be conducted until thermal stabilization is attained. Following stabilization, the temperatures on the windings shall not exceed the maximum temperatures specified in Table 10.1. Temperatures may be measured using the thermocouple, RTD/ETD, or the change-of- resistance method.
12 General
12.1 A machine shall be marked to indicate:
a) Manufacturer’s name or identification;
b) Machine catalog or model number;
c) Rated voltage;
d) Full-load amperes, watts or kilowatts, or both;
e) Rated speed;
f) Rated output;
g) Rated ambient temperature, if other than 40°C (104°F);
h) Rated frequency – expressed in one of the following terms: hertz, Hz, ac-dc, (frequency in Hz)/dc (for example, 60 Hz/dc), or ac only – or direct current; and, for a machine intended for use on a polyphase circuit, number of phases;
i) If greater than 1, number of phases;
j) The altitude if designed to operate at greater than 1000 m (3,280 feet); and
k) Class of insulation system.