Electrical Machine Design: the Design And Specification of Direct And ...
Electrical Machine Design: the Design And Specification of Direct And ...
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by thermometer on any part of the machine, and, immediately after the full-load heat run, shall carry 25 per cent, overload for 2 hours, at the same voltage, speed and power factor, with a temperature rise that shall not exceed 55^ C. by thermometer on any part of the machine.
The temperature rise of the bearings shall not exceed 40® C.
as measured by a thermometer in the oil well, either at normal load or at the overload.
No compromise heat run, other than one at normal voltage, zero power fac...tor, and with the armature current for which the guarantee is made, will be accepted. If the manufacturer cannot load the machine, a heat run will be made within 3 months after its erection to find out if it meets the heating guarantee; the test to be made by the alternator builder who shall supply the necessary men and instruments.
Overload Capacity. — The machine must be able to carry at least 50 per cent, overload at 80 per cent, power factor with the normal exciter voltage of 120.
The machine shall be capable of standing an instantaneous short-circuit when operating at normal voltage, normal speed, and no-load, and must be able to carry this short-circuit for 10 seconds without injury.
What to read after Electrical Machine Design: the Design And Specification of Direct And ...?
You can find similar books in the "Read Also" column, or choose other free books by Alexander Gray to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
by thermometer on any part of the machine, and, immediately after the full-load heat run, shall carry 25 per cent, overload for 2 hours, at the same voltage, speed and power factor, with a temperature rise that shall not exceed 55^ C. by thermometer on any part of the machine.
The temperature rise of the bearings shall not exceed 40® C.
as measured by a thermometer in the oil well, either at normal load or at the overload.
No compromise heat run, other than one at normal voltage, zero power fac...tor, and with the armature current for which the guarantee is made, will be accepted. If the manufacturer cannot load the machine, a heat run will be made within 3 months after its erection to find out if it meets the heating guarantee; the test to be made by the alternator builder who shall supply the necessary men and instruments.
Overload Capacity. — The machine must be able to carry at least 50 per cent, overload at 80 per cent, power factor with the normal exciter voltage of 120.
The machine shall be capable of standing an instantaneous short-circuit when operating at normal voltage, normal speed, and no-load, and must be able to carry this short-circuit for 10 seconds without injury.
What to read after Electrical Machine Design: the Design And Specification of Direct And ...?
You can find similar books in the "Read Also" column, or choose other free books by Alexander Gray to read onlineMoreLess
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