CN2692682Y

CN2692682Y - Portable high-voltage phase sequence measurer

Info

Publication number: CN2692682Y
Application number: CN 03262589
Authority: CN
Inventors: 王学义; 段玉杰
Original assignee: FURUNDE ELECTRONIC SCIENCE AND TECHNOLOGY Co Ltd XI'AN
Current assignee: FURUNDE ELECTRONIC SCIENCE AND TECHNOLOGY Co Ltd XI'AN
Priority date: 2003-08-07
Filing date: 2003-08-07
Publication date: 2005-04-13
Anticipated expiration: 2013-08-07

Abstract

The utility model relates to a portable high-voltage phase sequence measurer, comprising a metal hook connected with a high-voltage insulating arm pipe, a high-voltage resistor connected in series in the pipe, a protecting arm pipe connected with the bottom end of the high-voltage insulating arm pipe and a low-voltage resistor connected in series in the protecting arm. The low-voltage resistor is connected with a ground line. The bottom end of the pipe is sequentially connected with a guard ring and a handle. The upper end of the high-voltage resistor is connected with the metal hook, and the lower end is sequentially connected with a phase of the phase sequence measurer and the low-voltage resistor. A side of the phase sequence measurer is also connected with a ground line. The phase sequence measurer comprises a voltage division voltage reduction processing circuit whose signal is divided into two paths and sent to a rectification filtering wave and a phase sequence signal processing circuit. The rectification filtering wave and the signal of the phase sequence signal processing circuit are sent to a phase sequence indicating and alarm circuit. The portable high-voltage phase sequence measurer directly measures the phase sequence at the high-voltage side of the high voltage wire. The portable high-voltage phase sequence measurer has the advantages of simple structure, convenient operation, high testing efficiency, protecting arm and a plurality of grounding connections provided, acousto-optic indicating, displayable positive sequence and negative sequence and lacking phase. The portable high-voltage phase sequence measurer is particularly suitable for various scenes.

Description

Portable high-pressure phase sequence tester

One, technical field

The utility model relates to the phase sequence tester of charged detection high-tension electricity, particularly a kind of portable high-pressure phase sequence tester.

Two, background technology

Install or after maintenance finishes at high voltage electric equipment, need all before sending electricity to check whether the phase sequence of three-phase high-voltage is consistent with the color of cable or line identification, in order to avoid the electrical equipment voltage inversion that has phase sequence to require causes the accident, existing way is to test phase sequence at the secondary side of voltage transformer (VT) with the low pressure phase-sequence meter, sometimes some scene does not have the mutual inductor that connects, just need to connect a voltage transformer (VT) in addition again and test phase sequence with the low pressure phase-sequence meter, there is low, the wasting manpower and material resources of operating efficiency in this method, the safety inadequately of constructing, and defective such as directly perceived inadequately again.

Three, summary of the invention

Goal of the invention of the present utility model provides a kind of portable high-pressure phase sequence tester of measuring phase sequence in the hi-line high-pressure side simple in structure, direct.

The technical scheme that realizes goal of the invention is to solve like this: portable high-pressure phase sequence tester; comprise tripod; its improvements of the present utility model are also to comprise that metal hook connects a High-Voltage Insulation arm pipe; high-tension resistive is connected in series in the High-Voltage Insulation arm pipe; the bottom of High-Voltage Insulation arm pipe also connects a protection arm pipe; in protection arm pipe, be connected in series with common low resistance; common low resistance is connected with ground wire; the bottom of protection arm pipe is connected with retaining ring and handle in turn; the be connected in series upper end of high-tension resistive is connected with metal hook or pin; wherein one being connected with low resistance mutually of lower end and phase sequence tester; in like manner; all the other two phase structures are the same also to be connected on the phase sequence tester; one side of above-mentioned said phase sequence tester also is connected with ground wire; the phase sequence tester is connected with tripod again; its phase sequence tester comprises that again the electric signal of a dividing potential drop step-down treatment circuit divides two-way to send into current rectifying and wave filtering circuit and phase sequence signal processing circuit, and current rectifying and wave filtering circuit and phase sequence signal processing circuit are together sent signal into the phase sequence indication; the alarm circuit.

The utility model compared with prior art need not tested phase sequence with the low pressure phase-sequence meter at the secondary side of voltage transformer (VT), directly measures phase sequence in the hi-line high-pressure side but adopt.Have simple in structure, easy to operate, the testing efficiency height; have protection arm and multiple earth and connect, the acousto-optic indication can show positive sequence, negative phase-sequence, phase shortage; suitable especially on-the-spot the use, and can form 6kv/1.4m, 6kv/2.4m; 10kv/1.4m; 10kv/2.4m, 6/10kv/1.4m, many specifications such as 6/10kv/2.4m product; meet the provisions of the relevant regulations issued by the State fully through detecting, certain economic and social benefit are arranged.

Four, description of drawings

Fig. 1 is the utility model knot synoptic diagram;

Fig. 2 is the phase sequence tester circuit block diagram of Fig. 1;

Fig. 3 is the circuit theory diagrams of Fig. 2.

Five, embodiment

Accompanying drawing is the utility model specific embodiment

Below in conjunction with accompanying drawing content of the present utility model is described further

With reference to shown in Figure 1; comprise tripod 11; metal hook 1 connects a High-Voltage Insulation arm pipe 2; high-tension resistive 3 is connected in series in the High-Voltage Insulation arm pipe 2; the bottom of High-Voltage Insulation arm pipe 2 also connects a protection arm pipe 4; in protection arm pipe 4, be connected in series with common low resistance 6; common low resistance 6 is connected with ground wire 5; the bottom of protection arm pipe 4 is connected with retaining ring 7 and handle 8 in turn; the be connected in series upper end of high-tension resistive 3 is connected with metal hook 1; wherein one being connected with common low resistance 6 mutually of lower end and phase sequence tester 9; in like manner; all the other two phase structures are the same also to be connected on the phase sequence tester 9; one side of phase sequence tester 9 also is connected with ground wire 10, and phase sequence tester 9 is connected with tripod 11 again.At least two or more high-tension resistives 3 are connected in series in the High-Voltage Insulation arm pipe.One or two low resistance 6 is connected in series in the protection arm pipe.

Shown in Figure 2, its phase sequence tester 9 comprises that again the electric signal of a dividing potential drop step-down treatment circuit 12 divides two-way to send into current rectifying and wave filtering circuit 13 and phase sequence signal processing circuit 14, and current rectifying and wave filtering circuit 13 and phase sequence signal processing circuit 14 are together sent signal into phase sequence indication, alarm circuit 15.

Shown in Figure 3, resistance R 01, R001, R27, R24 and R14, capacitor C 8, R25, the dividing potential drop step-down treatment circuit 12 of the C phase of diode D15 composition diagram 2, the A phase, the dividing potential drop step-down treatment circuit of B phase is identical with the C circuitry phase, diode D3, D2, D6, D7, D12, D11 and D13, capacitor C 10, C9, C2, the current rectifying and wave filtering circuit 13 of C6 composition diagram 2, the reverser that current rectifying and wave filtering circuit 13 is given in the entire circuit, trigger, gate circuit and peripheral circuit power supply, U2A, U2B, U2C gate circuit and R12, R19, the phase sequence signal processing circuit 14 of R20 pie graph 2, U3A, the phase sequence indication of U3B flip-flop circuit and peripheral circuit composition diagram 2, the high-voltage signal that prompting inserted when the bright D8 of light emitting diode D5 went out is a positive sequence, the high-voltage signal that prompting inserted when the bright D5 of light emitting diode D8 went out is a negative phase-sequence, light emitting diode D2, D7, high pressure A is directly indicated in the D11 light on and off, B, the C three-phase has or not input, the alarm of U1 Nverter circuit and peripheral circuit and U2D gate circuit and hummer composition diagram 2, pulsed sound is the positive sequence indication during test, and sustained sound is the negative phase-sequence indication.

Claims

1; a kind of portable high-pressure phase sequence tester; comprise tripod (11); it is characterized in that also comprising that metal hook (1) connects a High-Voltage Insulation arm pipe (2); high-tension resistive (3) is connected in series in the High-Voltage Insulation arm pipe (2); the bottom of High-Voltage Insulation arm pipe (2) also connects a protection arm pipe (4); in protection arm pipe (4), be connected in series with common low resistance (6); common low resistance (6) is connected with ground wire (5); the bottom of protection arm pipe (4) is connected with retaining ring (7) and handle (8) in turn; the be connected in series upper end of high-tension resistive (3) is connected with metal hook (1); wherein one being connected with low resistance (6) mutually of lower end and phase sequence tester (9); in like manner; all the other two phase structures are the same also to be connected on the phase sequence tester (9); one side of above-mentioned said phase sequence tester (9) is connected with ground wire (10); phase sequence tester (9) is connected with tripod (11); its phase sequence tester (9) comprises that again the electric signal of a dividing potential drop step-down treatment circuit (12) divides two-way to send into current rectifying and wave filtering circuit (13) and phase sequence signal processing circuit (14), and current rectifying and wave filtering circuit (13) and phase sequence signal processing circuit (14) are together sent signal into the phase sequence indication; alarm circuit (15).

2, portable high-pressure phase sequence tester according to claim 1 is characterized in that two or more high-tension resistives that are connected in series at least in the High-Voltage Insulation arm pipe.

3, portable high-pressure phase sequence tester according to claim 1 is characterized in that protecting one or two low resistance that is connected in series in the arm pipe.

4, portable high-pressure phase sequence tester according to claim 1 is characterized in that said phase sequence tester is a high pressure bleeder circuit phase sequence tester.

5, portable high-pressure phase sequence tester according to claim 1 is characterized in that said protection arm connects for the many places multiple grounding.

6, portable high-pressure phase sequence tester according to claim 1 is characterized in that said phase sequence tester is acousto-optic indication, positive sequence, negative phase-sequence, phase shortage tester.