CN209784498U

CN209784498U - AC/DC switch electronic release calibrator

Info

Publication number: CN209784498U
Application number: CN201920174757.0U
Authority: CN
Inventors: 高嵬; 张校贵; 周斌华; 饶凡; 高键鑫
Original assignee: Naval University of Engineering PLA
Current assignee: Naval University of Engineering PLA
Priority date: 2019-01-31
Filing date: 2019-01-31
Publication date: 2019-12-13
Anticipated expiration: 2029-01-31

Abstract

The utility model discloses an AC/DC switch electronic release calibrator, which comprises a selection calibration unit, a zero clearing circuit, a transformer, a first rectifier bridge and a direct electronic release which are connected in sequence, wherein the selection calibration unit is connected with an AC220V power supply; and the second rectifier bridge and the alternating current electronic release are sequentially connected, the second rectifier bridge is connected with a timer, the timer is connected with a zero clearing circuit, the alternating current electronic release is connected with a transformer, and the second rectifier bridge is connected with an alternating current 220V power supply. The tester overcomes the defects that the existing tester has low setting precision and does not have the functions of monitoring, displaying and networking communication. The utility model has the advantages of the check gauge precision is high, and the error is little, easy operation, in the aspect of the use, the panel is succinct, is fit for warship in with laboratory field debugging.

Description

AC/DC switch electronic release calibrator

Technical Field

The utility model relates to a components and parts check-up field, concretely relates to alternating current-direct current switch electronic release check-up appearance.

Background

The initial tripper is an electromagnetic tripper, which has simple function but low precision, and sends a tripping signal by the bending deformation of a bimetallic strip caused by heating, and after a large current or mechanical collision, the bimetallic strip can generate permanent deformation, so that the tripper cannot stably work. In the last 70 th century, electronic tripper has appeared, which utilizes the charge-discharge regulation action time of resistance-capacitance loop and sets the action current setting value by regulating potentiometer, when the line has electric leakage or human body electric shock, the vector sum of the current passing through zero sequence current transformer is not equal to zero, and two sides of secondary coil of transformer generate voltage, and the voltage is amplified by integrated circuit, when the setting value is reached, the power supply is cut off in short time by leakage tripper, so as to play the role of electric shock and leakage protection. Which greatly improves the protection performance of the circuit breaker.

The electronic release is divided into an alternating current electronic release and a direct current release according to different access power supplies, and the check meter of the electronic release is also divided into an alternating current type and a direct current type, but generally has low check precision and larger volume.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned prior art, the to-be-solved technical problem of the utility model is to overcome the not enough of prior art existence, provided an alternating current-direct current switch electronic release check gauge.

The purpose of the utility model is achieved by the following measures: alternating current-direct current switch electronic release check gauge, its characterized in that: the direct electronic trip device comprises a selection checking unit, a zero clearing circuit, a transformer, a first rectifier bridge and a direct electronic trip which are connected in sequence, wherein the selection checking unit is connected with an alternating current 220V power supply; and the second rectifier bridge and the alternating current electronic release are sequentially connected, the second rectifier bridge is connected with a timer, the timer is connected with a zero clearing circuit, the alternating current electronic release is connected with a transformer, and the second rectifier bridge is connected with an alternating current 220V power supply.

In the above technical solution, the selection checking unit is a direct long and short delayer and an alternating current short delayer connected in parallel.

In the above technical solution, the direct electronic release is externally connected with an ac220V power supply.

In the above technical solution, the fan further comprises an axial flow fan for heat dissipation.

The utility model discloses AC/DC switch electronic release check gauge has following advantage:

(1) The utility model discloses with integrated together such as rectifier bridge and transformer, reduced the volume of whole device, realized miniaturization, the convenience of check gauge.

(2) The calibrator has complete functions, can realize the setting of overload long-delay current and time, the setting of short-circuit instantaneous current and time, the setting of pre-alarm current and time, and the manual reset function.

(3) The utility model is simple in operation, suitability are strong, and input power is exchanging 220V50Hz, can check up exchanging release, direct current release respectively.

(4) The calibrator has high precision and small error, the rated output of alternating current is 0-50A, the minimum resolution is 0.01A, and the precision is +/-5%; the direct current signal output is 0-320 mV and is adjustable; the timer is 0-99.9s, the minimum resolution is 0.001s, and the precision is +/-0.2%.

(5) The utility model is simple in operation, in the aspect of the use, the panel is succinct, is fit for warship interior and laboratory field debugging.

Drawings

Fig. 1 is a schematic diagram of the utility model of an ac/dc switch electronic release calibrator.

Fig. 2 is a circuit diagram of fig. 1.

Kc, n, TP, TN and SP in the figure are the wiring numbers of the AC electronic release.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting of the invention.

With reference to the accompanying drawings: the utility model discloses alternating current-direct current switch electronic release check gauge, its characterized in that: the direct electronic trip device comprises a selection checking unit, a zero clearing circuit, a transformer, a first rectifier bridge and a direct electronic trip which are connected in sequence, wherein the selection checking unit is connected with an alternating current 220V power supply; and the second rectifier bridge and the alternating current electronic release are sequentially connected, the second rectifier bridge is connected with a timer, the timer is connected with a zero clearing circuit, the alternating current electronic release is connected with a transformer, and the second rectifier bridge is connected with an alternating current 220V power supply.

The selective checking unit is a direct long-short delayer and an alternating current short delayer which are connected in parallel.

The direct electronic release is externally connected with an alternating current 220V power supply.

The utility model discloses still including being used for radiating axial fan.

Fig. 1 is a schematic diagram of the present invention, and fig. 2 is a circuit diagram of fig. 1; the utility model discloses alternating current-direct current switch electronic release check gauge's power supply is the 220V alternating current, selects the check switch to select alternating current electronic release or direct current electronic release, and establishes ties with relay K1 separately, and the parallel structure is examined with the direct current to alternating current inspection, selects as required during the inspection. The zero clearing circuit can achieve the zero clearing function of the timer, and the solid state relay VT can achieve direct current control alternating current. The voltage regulating transformer is 220V alternating current input, and the low-voltage side is two 6V outputs which are respectively connected with the direct current electronic release and the alternating current electronic release.

1. Alternating current long and short delay current, time setting or alarm current time setting method

Firstly, the voltage regulator SB knob is adjusted to the zero position, then the power switch QK is switched on, the check selection switch SA1 is arranged at the closed position, the voltage regulator SB knob is clockwise rotated according to the overload analog current value of the circuit breaker, the digits of an ammeter are observed, the overload analog current value is reached, the check selection switch SA1 is rotated to the ' off position, the ' zero clearing ' button SB2 is pressed, the timer is enabled to return to zero, the silicon controlled VT is switched off, the red indicator lamp HD2 is extinguished, and the check selection switch SA1 can be arranged at the ' alternating current long and short delay ' position to test the delay time and the overload current value.

and if the current and the time are larger than or smaller than the setting value, adjusting the resistance value of the corresponding potentiometer of the electronic release control board. And in short time delay, manually pressing a current presetting button SB1, rapidly rotating a knob of a voltage regulator SB clockwise, observing numbers on an ammeter to achieve a short time delay analog current value, loosening a current presetting button SB1 button, turning a check selection switch SA1 to an 'off' position, pressing a 'zero clearing' button SB2, turning the check selection switch SA1 to an on position, starting timing, and if the current and the time are greater than or less than a setting value, adjusting the resistance value of a corresponding potentiometer of the control panel of the electronic release.

2. Method for adjusting length delay of electronic release of direct-current switch

According to the tested release model and the corresponding adapting cable, the aviation plug of the ZGL2-01 type electronic release adapting cable is marked with Y27F-1610 TKL; an aviation socket of the ZGL2-02 type electronic release adapting cable is marked with Y27F-2019 TKL; the aviation socket of the ZGL 2-03-07 type electronic release adapting cable is marked with Y27F-1814 TKL. According to electronic release setting and shunt specification on distribution board (ZCL)₂1500A/75mV for 03, 3000A/75mV for 01, 04 and 05, and 4000A/75mV for 02, 06 and 07), and the millivolt signals are customized according to the length delay and the time delay.

And according to the converted fixed value, switching on the power switch and the calibration selection switch, placing the power switch and the calibration selection switch at the direct-current long-short delay position, adjusting a knob of a voltage regulator SB, observing the number on the millivoltmeter, and switching off the calibration selection switch when the fixed value is reached. The check meter selection switch is arranged at a direct current long-short delay position, the electronic release enters a working state, and after the release acts, the release indicator lamp is lighted. If the time is longer than or shorter than the fixed value, the box cover of the electronic release is opened, the long delay potentiometer is adjusted, and the adjustment is repeated for several times until the fixed value is reached.

The utility model discloses main device includes: a 0.5kVA voltage regulator, a current transformer, a high-current relay, a rectifier bridge, a check selection switch and the like. The check meter is powered by a 220V and 50Hz alternating current power supply and can be assembled with an 18W TYP4850N AC220V axial flow fan for heat dissipation.

The selection of the check switch can select the alternating current release or the direct current release, the alternating current release or the direct current release is respectively connected with the relay in series, the alternating current check and the direct current check form a parallel structure, and the selection is carried out according to the requirement during the check. The HD2 indicator light is connected with AC220V and controlled by a relay K1, the relay K1 is connected with a resistor R2 in parallel for current limiting protection, and the relay K1 is connected with a zero clearing button SB2 and a solid state relay VT. The voltage regulator SB with the iron core is also connected to the AC220V, the secondary side and the tertiary side are both 6V, but the secondary side is connected to the direct electronic release through a rectifier bridge, and the tertiary side is directly connected to the alternating current electronic release. An LC filter circuit is connected in series with the secondary winding for reducing the influence of harmonic waves, and a 75mV/5A shunt is connected in parallel; the tertiary winding is connected with a ZF5135-AC5A digital ammeter for measuring the current magnitude, and the loop is controlled by a relay K2. The alternating current 220V is converted into direct current through a rectifier bridge Z2, and a 220 muF capacitor C, NHCAC380V indicator lamp HD3 is connected in parallel on the direct current side and is connected to No. 1 and No. 3 terminals of the direct current release.

Connect an alternating current-direct current conversion module from AC220V, the module input is 220V alternating current promptly, and delivery outlet 1 is 5V direct current for +/-5V, and connect XL5155S-3(DC5V) digital timer, this timer total 10 terminals, the utility model discloses in adopt wherein five terminals, divide into and be: 1. 2, 4, 9 and 10, when the terminals 1 and 2 are short-circuited, the timer starts to time, and the time is ended when the terminals are disconnected; the relay K5 is connected with the relay K2' in parallel and then connected with the relay K1 in series to jointly control the start and the end of the timer; 2. the zero clearing operation of the timer can be realized by short circuit of the No. 4 terminal, and the zero clearing button SB2 can control the connection state of the No. 2 and No. 4 terminals, namely the zero clearing function; 9. no. 10 terminal is a power supply terminal, No. 10 is connected with the positive pole, and No. 9 is connected with the negative pole. The TP and TN of the AC electronic release are respectively the output "+" and "-" of the AC electronic release, are connected with the TP and TN of the check meter, and are controlled by a button SB 3. The output port 2 of the rectifying module is direct current of +/-24V and is connected with SP and SN of the electronic release.

Other details not described are prior art.

Claims

1. Alternating current-direct current switch electronic release check gauge, its characterized in that: the direct electronic trip device comprises a selection checking unit, a zero clearing circuit, a transformer, a first rectifier bridge and a direct electronic trip which are connected in sequence, wherein the selection checking unit is connected with an alternating current 220V power supply; and the second rectifier bridge and the alternating current electronic release are sequentially connected, the second rectifier bridge is connected with a timer, the timer is connected with a zero clearing circuit, the alternating current electronic release is connected with a transformer, and the second rectifier bridge is connected with an alternating current 220V power supply.

2. The ac-dc switch electronic release calibrator of claim 1, wherein: the selective checking unit is a direct long-short delayer and an alternating current short delayer which are connected in parallel.

3. The ac-dc switch electronic release calibrator of claim 1, wherein: the direct electronic release is externally connected with an alternating current 220V power supply.

4. The ac-dc switch electronic release calibrator according to any one of claims 1-3, wherein: the fan also comprises an axial flow fan for heat dissipation.