White Outdoor 778 Instrukcja Obsługi Pobierz pdf (Strona 60)

33 Input Test

33.1 The ampere input to a pump shall not exceed 110 percent of the rated value when the pump is

operated under the conditions of maximum normal load as described in 34.2.1 while connected to a

branch circuit of maximum rated voltage and rated frequency. Maximum rated voltages are determined as

follows:

a) For a pump with a single DC voltage rating or a single AC rating not within the ranges of

110 – 120, 200– 208, 220 – 240, 440 – 480, or 550 – 600 volts, rated voltage is that single

voltage.

b) For a pump with a single AC voltage rating that falls within one of the ranges given in (a),

the rated voltage is considered to be the highest voltage in the range.

c) For a pump marked with a range of voltages, the highest voltage in the marked range is to

be considered as if it were a single voltage rating in (a) or (b).

33.2 A pump having a single frequency rating is to be tested at that frequency. A pump rated AC-DC,

DC-60 hertz, or DC-25– 60 hertz, is to be tested either on direct current or at 60 hertz, whichever results

in the higher temperatures. A pump rated 25 – 60 hertz or 50 – 60 hertz is to be tested at 60 hertz.

34 Temperature Test

34.1 General

34.1.1 While loaded as described in 34.2.1, a pump shall not attain a temperature at any point sufficiently

high to constitute a risk of ﬁre, to damage any materials or parts used in the pump, or to exceed the

temperature rises speciﬁed in Table 34.1.

34.1.2 All values of temperature rise in Table 34.1 are based on an assumed room ambient temperature

of 25°C (77°F). The temperature test is to be conducted at any room temperature within the range of 10

– 40°C (50 – 104°F).

Exception No. 1: The temperature rise for a submersible pump intended for use with unheated water shall

not exceed the maximum temperature measured minus the water temperature. The tank shall have

enough capacity or be otherwise arranged so that the heat from the pump has a negligible effect on

overall ambient water temperature.

Exception No. 2: A submersible sump or deep-well pump is to be tested with water maintained at a

temperature in the range of 15 – 25°C (59 – 77°F).

Exception No. 3: A submersible pump intended for use with heated water or assigned a maximum water

temperature by the manufacturer is to be tested at the maximum water temperature. The temperature

rises speciﬁed in Table 34.1 are to be reduced by the amount equal to the difference between the

maximum water temperature and 25°C.

34.1.2 revised March 29, 1999

SEPTEMBER 28, 2000MOTOR-OPERATED WATER PUMPS - UL 77842B

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White Outdoor 778 Instrukcja Obsługi Strona 60