CN86204485U

CN86204485U - Low-voltage distributor equipped with electricity devices

Info

Publication number: CN86204485U
Application number: CN 86204485
Authority: CN
Inventors: 李安录
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-07-04
Filing date: 1986-07-04
Publication date: 1987-09-30

Abstract

The utility model relates to a low-voltage distributor equipped with electricity devices, belonging to an A.C. low-voltage switch cabinet. The utility model is provided with an anti-electricity stealing box, an anti-electricity stealing device and a detecting current mutual inductor and can avoid electricity stealing on an electric meter and electricity stealing on the quadric wire connecting terminal of a measuring mutual inductor; the electricity stealing before the electric meter can record the time of electricity stealing; the electricity stealing of the voltage wire of an open circuit electric meter can record the time of electricity stealing and the electric quantity of electricity stealing.

Description

Low-voltage distributor equipped with electricity devices

Anti-electricity-theft low-voltage distribution panel belongs to AC low voltage power switch box.

Because the special shape that electric energy is sold directly contacts consumer's (power consumer) with commodity (electric energy), this just makes stealing compared with the theft commodity the extremely convenient difficult again convenience of being found by the people be arranged.The stealing electricity method of having found can reduce four big classes: for example shunt current coil of, on kilowatt-hour meter, making an issue of, put magnet, and dial register, transposing zero line and phase line etc.Two, the pressure-wire of open circuit kilowatt-hour meter.Three, open circuit, half-open road or short circuit current instrument transformer secondary connection terminal.Four, the metering instrument transformer before promptly the table before stealing.These methods can both make kilowatt-hour meter not change or slow-speed.Reduce enterprise's electricity charge expenditure, cause electric industry department electric quantity loss, influence state revenue up to 30% sometimes.

The DTG type low-temperature measurement cabinet that Changchun power communication instrument factory is produced also belongs to anti-fraudulent use of electricity type.This product is that three (except that panels) of cabinet are added lead sealing, the protection type that the user can't be touched with the sealing of iron net.When user's switch, fuse etc. broke down, repairing can break a seal after must notifying the relevant personnel of electric industry department to show up.Promptly influence the workload that the user produces increases electric industry department again.Through WPI(world patent document) storehouse 63-83 and the discovery invention identical of WPI patent documentation (hand inspection) 84,85 retrievals with this utility model.

The objective of the invention is: accomplish planned supply for national electric energy, rationally use, make the bigger economic and social benefit of effective electric energy performance.Restriction and the supervision electricity filching behavior of electric unit.Overcome simultaneously the shortcoming of existing anti-fraudulent use of electricity type power distribution cabinet again.Invented the anti-electricity-theft low-voltage distribution panel of utility model hereby.

Design concept of the present utility model is: set up Box for avoiding fraudulent use of electricity in current containing in the low-voltage distribution cabinet dynamic, that illumination is measured of generally using, in kilowatt-hour meter is enclosed in, avoided stealing on kilowatt-hour meter.Power, illumination anti-electricity-theft device have been set up, the electric weight of record open circuit watt-hour meter voltage line stealing and stealing time, stealing fate.Set up power, the inlet of lighting loop, outlet detection current transformer, detected the electric current of the preceding stealing of table, through the stealing time before certain circuit form record sheet, stealing fate before showing.Owing to detect current transformer and former metering current mulual inductor in the special arrangement of installing, can avoid open circuit, half-open road or the stealing of short circuit metering current mulual inductor secondary connection terminal.

This novel anti-electricity-theft low-voltage distribution panel is an open type.Switch, fuse etc. are open.User's operation is used and keeps in repair than closed DTG type anti-fraudulent use of electricity type low-temperature measurement cabinet to make things convenient for, and saves time.Can prevent user's stealing and in the stealing of metering current mulual inductor secondary connection terminal on kilowatt-hour meter.Even open circuit watt-hour meter voltage line and stealing before table also can be write down the stealing time, power-steeling quantity how much.Be the reasonable use of electric energy, scientific management provides foundation.

Description of drawings:

Fig. 1: anti-electricity-theft low-voltage distribution panel structure chart ()

Fig. 2: anti-electricity-theft device floor plan

Fig. 3: monitoring voltage, time memory, fate memory principle figure

Fig. 4: dynamic measurement voltage circuit schematic diagram

Fig. 5: dynamic measurement current circuit schematic diagram

Fig. 6: stealing time, fate schematic diagram before the record sheet

Fig. 7: stealing kilowatt-hour meter schematic diagram

Fig. 8: anti-electricity-theft low-voltage distribution panel structure chart (two)

Fig. 9: anti-electricity-theft low-voltage distribution panel panel figure

The utility model embodiment

The skeleton of anti-electricity-theft low-voltage distribution panel, panel, material is made, the installation of electric equipment, instrument on the panel plate, outfit of signal lamp etc. and whole production technologies are identical with JB617-65 " low-voltage distribution panel " technical conditions no longer repeats.With the anti-electricity-theft principle of dynamic measurement part, the structure performance is an example below, (partly identical heavy summary of illumination).

(Fig. 8) the anti-electricity-theft casing size of FD 960 * 885 * 200mm welds together with cold rolling iron plate Wei system and the switchboard front column (Fig. 8) 1 of thick 2mm, in kilowatt-hour meter, anti-electricity-theft device can being enclosed in when pass face door and when adding lead sealing.Be the supervisory relay J in record open circuit watt-hour meter voltage line stealing (Fig. 2) electricity filching device ₁J ₂J ₃Its coil is connected on the pressure-wire of going to kilowatt-hour meter, the having or not of monitor voltage.(Fig. 4) when open circuit watt-hour meter voltage line, loss of voltage, supervisory relay dead electricity, (Fig. 3) contact J _1-1, J _2-1, J _3-1As long as a disconnection is arranged, relay J ₄Dead electricity, contact J _4-1Closure, relay J ₅Must be electric, contact J _5-1Adhesive, time memory, device quartz clock SG got electric startup timing.When timing to 24 hour contact SG-1 adhesive, fate memory storage counter TG gets electric enabling counting.Advance one in ten days and remember 99999 days automatic clears.J ₄Dead electricity (Fig. 7) contact J _4-2Disconnect J _4-3Adhesive, J _4-4Disconnect (Fig. 5) stealing kilowatt-hour meter FQD logging stealing electric weight.

The stealing kilowatt-hour meter FQD here changes a social system with the DD282-4A single-phase watt-hour meter.The primary voltage coil is dismantled, directly be the high-strength enamelled wire two-wire of 1.56～1.6mm again with line and constitute (Fig. 7), L around 35 circles with its skeleton ₁L ₂With kilowatt-hour meter primary current coil L ₃The end of a thread 1.2 is connected to the current terminal of former kilowatt-hour meter, accepts metering transducer signal (load current).3,4 be connected to other line terminals, 5 are connected to voltage terminal.Utilize the mutual inductance principle, the load current that flows through the stealing kilowatt-hour meter also produces " voltage " magnetic field except that producing current field, and two magnetic fields are synthetic to have produced a turning moment, the work of stealing kilowatt-hour meter.

Realized the preceding stealing time of recording kilo-watthour meter table in the anti-electricity-theft device, needed to detect earlier have or not stealing.With a certain be example mutually, normal power load electric current detects instrument transformer 1LH through (Fig. 6) inlet and also detects instrument transformer 2LH and metering instrument transformer 3LH through outlet.If stealing before the table, according to the Ke Xikefu law, the detected electric current of 1LH and 2LH difference occurred and has been the stealing electric current.By current-to-voltage converter BH the stealing electric current is become voltage.Time memory device quartz clock SG 1.2 volts of operating voltages, operating current 2.7mA.For the sensitivity channel that improves quartz clock has increased given voltage V _AbIt is 0.84 volt.Deactivation device time memory SG again, fate register TG(Fig. 6).

(Fig. 2) iron core of three current-to-voltage converter BH is the E font, net sectional area 5.06mm ²Directly be that the high-strength enamelled wire of 0.44mm is around 120 circles once with 4 strands.Secondary line footpath 0.17mm is around 1700 circles, then the dipping lacquer drying.Power transformer BK ₂The core type shape, net sectional area is identical with BH.Primary line directly be 0.31mm around 1460 circles, secondary line directly is 0.17mm coiled 37 circles respectively, two groups of coils of 84 circles.Given voltage transformer BK ₁Be outsourcing finished product XD ₇-220V sign lighting transformer.

Other resistor-capacitor unit diodes, relay J ₅After being welded on the printed circuit board (PCB) Deng electric device, use m4 * 60 screws to be installed in the anti-electricity-theft device again.

Three inlet detection instrument transformer (Fig. 1) 1LH detect instrument transformers (left side) with three illuminations and become one to arrange on the upper mounting plate A of fixing and skeleton welding.Three outlets detect instrument transformer 2LH and overlay 3 metering instrument transformer 3LH upward (lighting loop is identical) respectively, and its secondary connection terminal is covered.Be fixed on again on the lower installation board B.This mounting structural mode can prevent open circuit, half-open road or the stealing of short circuit metering current mulual inductor 3LH secondary connection terminal.

Anti-electricity-theft device (Fig. 2) is with the thick cold rolling Tie Ban Wei system of 1.2mm, is fixed in the Box for avoiding fraudulent use of electricity with m4 * 6.Current-to-voltage converter BH, transformer BK ₁, BK ₂, relay J ₁, J ₂, J ₃, J ₄, power-steeling preventing electric meter FQD, quartz clock SG, register TG is fixed in the anti-electricity-theft device by the screw of m4 * 5.

Anti-electricity-theft low-voltage distribution panel door (Fig. 9) is made up of powered door 1 and illumination door 2.The panel door is with 2mm thick cold rolling Tie Ban Wei system, all is disassembles from top to bottom.(Fig. 8) between two and the switchboard front column 1 by iron door-hinge (Fig. 8) 2 hinges.On the door windowpane (Fig. 9) 3 is housed and is convenient to check meter, close behind the door with kilowatt-hour meter, in anti-electricity-theft device is encapsulated in.When door is opened, be a kilowatt-hour meter test easily, maintenance platform.

Debug behind the assembling distribution: adjusting given voltage is 0.84 volt; (analogue value quartz clock 2.5～3A) time memory starts, and remembers into one to 24 hours fates to feed the stealing electric current; During outage kilsyth basalt pressure-wire, time, fate memory storage start stealing kilowatt-hour meter logging stealing electric weight.

Claims

1, a kind of anti-electricity-theft low-voltage distribution panel that includes power, illumination metering is characterized in that the power of this low-voltage distribution panel, inlet, the outlet of all having set up stealing current detecting before the table to be come out of throwing light on detect current transformer (Fig. 1) 1LH, 2LH.The power of stealing fate, illumination anti-electricity-theft device (Fig. 2) and can avoid mounting structure before stealing time, the record sheet before the record sheet have been set up with Box for avoiding fraudulent use of electricity (Fig. 8) FD of kilowatt-hour meter in being encapsulated in and electric weight, record stealing time, record stealing fate that can the stealing of electricity-measuring meter pressure-wire in open circuit or the stealing of short circuit metering current mulual inductor secondary connection terminal.

2, low-voltage distribution panel as claimed in claim 1 in it is characterized in that electric degree to be encapsulated in, prevents cold rolling Tie Ban Wei system and switchboard front column (Fig. 8) 1 welding of Box for avoiding fraudulent use of electricity (Fig. 8) FD of stealing on kilowatt-hour meter with thick 2mm.

3, low-voltage distribution panel as claimed in claim 1 is characterized in that in the anti-electricity-theft device, is used for relay (Fig. 2) J that monitor voltage has or not ₁J ₂J ₃Coil be connected on (Fig. 4) on the pressure-wire of going to kilowatt-hour meter.When open circuit watt-hour meter voltage line, supervisory relay dead electricity, contact (Fig. 3) J _1-1J _2-1J _3-1Disconnect.Relay J ₄Dead electricity, contact J _4-1Closure, relay J ₅Must be electric, contact J _5-1Adhesive, time memory, device quartz clock SG got electric startup timing, and when timing to 24 hour contact SG-1 closure, fate memory storage register TG gets electric enabling counting.Advance one in ten days, and write 99999 days automatic clears all over.Because of relay J ₄Dead electricity (Fig. 7) contact J _4-2Disconnect J _4-3Adhesive, J _4-4Disconnect stealing kilowatt-hour meter (Fig. 5) FQD rotation record stealing electric weight.

4, low-voltage distribution panel as claimed in claim 1, it is characterized in that the device of stealing time before the record sheet in the anti-electricity-theft device is that difference between current (stealing electric current) by (Fig. 6) two detection current transformers 1LH and 2LH is through current-to-voltage converter BH, the stealing electric current is become voltage, directly start quartz clock SG and register TG.For the sensitivity that improves quartz clock has increased a given voltage V again _AbIt is 0.84 volt.

5,, it is characterized in that outlet detection current transformer (Fig. 1) 2LH overlays the mounting structure above the metering current mulual inductor 3LH, covers the metering current mulual inductor binding post as the described low-voltage distribution panel of claim 1.4.

6, as the described low-voltage distribution panel of claim 1.3, it is characterized in that measuring stealing kilowatt-hour meter (Fig. 5) FQD is with the transformation of the way of DD282-4A single-phase watt-hour meter.Potential winding wherein dismantled use its skeleton, directly be the high-strength enamelled wire two-wire of 1.56～1.6mm again with line and constitute (Fig. 7) L around 35 circles ₁L ₂With kilowatt-hour meter primary current coil L ₃The end of a thread 1.2 is connected to the current terminal of former kilowatt-hour meter, accepts metering transducer signal (load current).3.4 be connected to zero terminal, 5 are connected to voltage terminal.Utilize the feasible load current that flows through the stealing kilowatt-hour meter of mutual inductance principle except that producing current field, also to produce " voltage " magnetic field, turning moment of two synthetic generations in magnetic fields, the stealing kilowatt-hour meter is worked.

7, low-voltage distribution panel as claimed in claim 1 is characterized in that it can being a kilowatt-hour meter test easily, maintenance platform when opening the door.Face door (Fig. 9) is by powered door 1, and illumination door 2 is formed.All are disassembles from top to bottom, are provided with the windowpane 3 that conveniently to check meter.