Electric motor analyzer
First Claim
1. An analyzer for performing high and low voltage tests on an electric induction machine having electric power input terminals, the analyzer comprising:
- (a) a high voltage testing circuit for performing high voltage tests on the induction machine;
(b) a low voltage testing circuit for performing low voltage tests on the induction machine;
(c) electrical terminals for electrical connection with the power input terminals of the induction machine;
(d) a plurality of switches electrically connecting the high voltage testing circuit and the low voltage testing circuit to the terminals, each switch having one or more control input terminals for receiving control signals for closing and opening the switch; and
(e) a controller having a first set of output terminals electrically connected to the control input terminals of the switches, the controller providing control signals to the switches to selectively open one or more of the switches and to selectively close one or more of the switches to;
(i) provide electrical conduction paths between the high voltage testing circuit and the induction machine through the closed switches, while electrically isolating the low voltage testing circuit from the high voltage testing circuit through the open switches; and
(ii) provide electrical conduction paths between the low voltage testing circuit and the conduction machine through the closed switches, while electrically isolating the high voltage testing circuit from the low voltage testing circuit through the open switches.
1 Assignment
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Accused Products
Abstract
An analyzer for performing high and low voltage tests on an electric induction machine having electric power input terminals. The analyzer comprises: (a) a high voltage testing circuit for performing high voltage tests on the induction machine; (b) a low voltage testing circuit for performing low voltage tests on the induction machine; (c) electrical terminals for electrical connection with the power input terminals of the induction machine; (d) a plurality of switches electrically connecting the high voltage testing circuit and the low voltage testing circuit to the terminals, each switch having one or more control input terminals for receiving control signals for closing and opening the switch; and (e) a controller having a first set of output terminals electrically connected to the control input terminals of the switches, the controller providing control signals to the switches to selectively open one or more of the switches and to selectively close one or more of the switches to: (i) provide electrical conduction paths between the high voltage testing circuit and the induction machine through the closed switches, while electrically isolating the low voltage testing circuit from the high voltage testing circuit through the open switches; and (ii) provide electrical conduction paths between the low voltage testing circuit and the conduction machine through the closed switches, while electrically isolating the high voltage testing circuit from the low voltage testing circuit through the open switches.
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Citations
19 Claims
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1. An analyzer for performing high and low voltage tests on an electric induction machine having electric power input terminals, the analyzer comprising:
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(a) a high voltage testing circuit for performing high voltage tests on the induction machine; (b) a low voltage testing circuit for performing low voltage tests on the induction machine; (c) electrical terminals for electrical connection with the power input terminals of the induction machine; (d) a plurality of switches electrically connecting the high voltage testing circuit and the low voltage testing circuit to the terminals, each switch having one or more control input terminals for receiving control signals for closing and opening the switch; and (e) a controller having a first set of output terminals electrically connected to the control input terminals of the switches, the controller providing control signals to the switches to selectively open one or more of the switches and to selectively close one or more of the switches to; (i) provide electrical conduction paths between the high voltage testing circuit and the induction machine through the closed switches, while electrically isolating the low voltage testing circuit from the high voltage testing circuit through the open switches; and (ii) provide electrical conduction paths between the low voltage testing circuit and the conduction machine through the closed switches, while electrically isolating the high voltage testing circuit from the low voltage testing circuit through the open switches. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An analyzer for performing high and low voltage tests on an electric induction machine having electric power input terminals, the analyzer comprising:
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(a) a high voltage testing circuit for performing high voltage tests on the induction machine, the high voltage testing circuit including an insulation resistance measurement circuit; (b) a low voltage testing circuit for performing low voltage tests on the induction machine, the low voltage testing circuit including a resistance measurement circuit and an impedance measurement circuit; (c) electrical terminals for electrical connection with the power input terminals of the induction machine; (d) a plurality of switches electrically connecting the high voltage testing circuit and the low voltage testing circuit to the terminals, each switch having one or more control input terminals for receiving control signals for closing and opening the switch, wherein the switches comprise one or more high voltage relay switches for providing electrical conduction paths between the high voltage testing circuit and the conduction machine, and one or more low voltage relay switches for providing electrical conduction paths between the low voltage testing circuit and the conduction machine; and (e) a controller having a first set of output terminals electrically connected to the control input terminals of the switches, the controller providing control signals to the switches to selectively open one or more of the switches and to selectively close one or more of the switches to; (i) provide electrical conduction paths between the high voltage testing circuit and the induction machine through the closed switches, while electrically isolating the low voltage testing circuit from the high voltage testing circuit through the open switches; and (ii) provide electrical conduction paths between the low voltage testing circuit and the conduction machine through the closed switches, while electrically isolating the high voltage testing circuit from the low voltage testing circuit through the open switches. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of performing high and low voltage tests on an electric induction machine having electric power input terminals, the method comprising the steps of:
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(a) providing an analyzer comprising; (i) a high voltage testing circuit for performing high voltage tests on the induction machine; (ii) a low voltage testing circuit for performing low voltage tests on the induction machine; (iii) electrical terminals for electrical connection with the power input terminals of the induction machine; (iv) a plurality of switches electrically connecting the high voltage testing circuit and the low voltage testing circuit to the terminals, each switch having one or more control input terminals for receiving control signals for closing and opening the switch; and (v) a controller having a first set of output terminals electrically connected to the control input terminals of the switches, the controller providing control signals to the switches to selectively open one or more of the switches and to selectively close one or more of the switches to; (1) provide electrical conduction paths between the high voltage testing circuit and the induction machine through the closed switches, while electrically isolating the low voltage testing circuit from the high voltage testing circuit through the open switches; and (2) provide electrical conduction paths between the low voltage testing circuit and the conduction machine through the closed switches, while electrically isolating the high voltage testing circuit from the low voltage testing circuit through the open switches; (b) electrically connecting the terminals of the analyzer to the power input terminals of the induction machine; (c) performing high voltage testing on the induction machine utilizing the analyzer; and (d) performing low voltage testing on the induction machine utilizing the analyzer. - View Dependent Claims (18, 19)
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Specification