Tester for high voltage measuring apparatus
First Claim
1. A portable tester for a high-voltage measuring apparatus which includes two electrically conductive probes for electrical coupling respectively to points in a high-voltage circuit between which the potential is to be measured, with at least one of the probes being disposed at a probe end of an elongated electrically insulating pole, and a voltmeter connected across the probes, said tester comprising:
- housing means including an elongated tubular socket formed of electrically insulating material and having an open outer end and a closed inner end and dimensioned to receive the probe end of the pole, generating means disposed in said housing means and having a pair of output terminals and generating a high-voltage test signal across said output terminals, and two contact terminals respectively connected to said output terminals and respectively disposed for electrical connection to the probes, one of said contact terminals being disposed at the inner end of said tubular socket for electrical contact with the probe end of the pole when it is inserted in the socket.
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Accused Products
Abstract
A tester applies a high-voltage test signal across the probes of a high-voltage measuring apparatus, wherein at least one of the probes is mounted at a probe end of an elongated insulated pole. The tester includes a battery-powered generator for generating the test signal which is applied across two contact terminals, respectively adapted for connection to the probes. One of the contact terminals is disposed at the bottom of an elongated tubular socket which receives the probe end of the pole, the contact terminal including two conductive members spring-biased apart until the pole is inserted in the socket. The generator is energized through a switch which may be mounted on the generator housing. In one embodiment the other contact terminal is an alligator clip and in a second embodiment the other contact terminal is disposed in a second socket.
26 Citations
19 Claims
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1. A portable tester for a high-voltage measuring apparatus which includes two electrically conductive probes for electrical coupling respectively to points in a high-voltage circuit between which the potential is to be measured, with at least one of the probes being disposed at a probe end of an elongated electrically insulating pole, and a voltmeter connected across the probes, said tester comprising:
- housing means including an elongated tubular socket formed of electrically insulating material and having an open outer end and a closed inner end and dimensioned to receive the probe end of the pole, generating means disposed in said housing means and having a pair of output terminals and generating a high-voltage test signal across said output terminals, and two contact terminals respectively connected to said output terminals and respectively disposed for electrical connection to the probes, one of said contact terminals being disposed at the inner end of said tubular socket for electrical contact with the probe end of the pole when it is inserted in the socket.
- View Dependent Claims (2, 3, 4, 8, 9, 10)
- 5. The tester of claim wherein said one contact terminal includes a first conductive member connected to the corresponding one of the output terminals and a second conductive member normally spaced from said first conductive member and engageable with the probe end of the pole, and means mounting said second conductive member for movement into electrical contact with said first conductive member in response to insertion of the probe end of the pole in said socket for establishing electrical connection between the probe and said generating means.
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7. The tester of claim wherein said socket has a length such that a human finger inserted in the socket cannot reach said one of said contact terminals.
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11. A portable tester for a high-voltage measuring apparatus which includes two elongated electrically insulating poles each having an electrically conductive probe end, the probe ends being adapted for electrical coupling respectively to points in a high-voltage circuit between which the potential is to be measured, and a voltmeter connected across the probes, said tester comprising:
- housing means including two elongated tubular sockets formed of electrically insulating material and each having an open outer end and a closed inner end, said sockets being respectively dimensioned to receive the probe ends of the poles, generating means disposed in said housing means and having a pair of output terminals and generating a high-voltage test signal across said output terminals, two contact terminals respectively disposed at the inner ends of said tubular sockets and adapted to be electrically connected to the probe ends when they are disposed in said sockets, and means connecting said contact terminals respectively to said output terminals.
- View Dependent Claims (14, 15, 16, 17, 18, 19)
- 12. The tester of claim and further comprising activating means for selectively energizing said generating means.
Specification