Anti- four line money drawing plat electricity box of arrearage low voltage three-phase
Technical field
The present invention relates to four line money drawing plat electricity box of a kind of money drawing plat electricity box more particularly to a kind of anti-arrearage low voltage three-phase, fit
Installation and protection for electricity market three-phase four-wire system money drawing plat.
Background technique
Currently, the low voltage three-phase four-wire system money drawing plat electricity box that scene uses are broadly divided into two major classes, one kind is opened for early stage nothing
Case intelligence trip avoidance function electricity box, using the time limit in 10-15, another kind was intelligent trip avoidance function electricity box of unpacking, on a left side in 2006
It is right to start to apply.The card electricity box technology relative maturity now applied, but with the growth of the application time limit, the application of intelligent meter is sudden and violent
Expose many in installation, the problems in maintenance process, brings no small maintenance cost to the metrological personnel of work on the spot.Mainly
Problem is as follows:
1. current arrearage breaking coil power supply connects at on-load switch, load side chamber door cannot be latched, since user's private connects
Load line and malicious owing fee can arbitrarily disconnect breaking coil wiring, cause subscriber arrearage that can not trip, and seriously affect the electricity charge and return
Receive quality.
2. original door lock device is that upper and lower bar is locked a door, door lock loss, well damage can not close the door and seal up.Electricity box are by external force
It squeezes, box deformation causes chamber door that can not lock and unlock, or causes chamber door to deform after prying open by force.Measure seal and door lock
It is the security protection of sale of electricity end and anti-electricity-theft last barrier, lockset is once destroyed, caused to power supply safety and market order
Larger threat.
3. after dress table connects electricity, electricity box IC card mouth can not be docked with IC mouthfuls of electric energy meter dislocation.Electric energy meter during the installation process without
Method moves up and down, and the mode for destroying glass window can only be taken just to can be carried out plug-in card purchase when metrological personnel encounters problems at the scene
Electricity.And often occur in the real work of problems scene.
4. power supply indicator, load indicator light protrusion are excessive, there is damage phenomenon when in carrying, installation process, and consume energy
It is larger.
5. using cartridge fuse fuse protection, fuse protection to the protection of breaking coil and work light in current electricity box
Metering class personnel on site needs to change new cartridge fuse afterwards, replaces larger workload.Skill can be used in low-tension fuse pipe completely at present
The air switch of art maturation is substituted.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, provides a kind of four line money drawing plat table of anti-arrearage low voltage three-phase
Case solves the problems, such as arbitrarily disconnect breaking coil wiring in the prior art.
Technical scheme is as follows:
Anti- four line money drawing plat electricity box of arrearage low voltage three-phase, including cabinet, electric card table skeleton, money drawing plat, current transformer, table
Preceding combined floodgate indicator light and load combined floodgate indicator light, money drawing plat connected load side line bank, ground protection line bank and air switch,
Air switch connects trip switch of unpacking, and unpacking breaking coil and arrearage breaking coil are arranged on air switch, power switch
Two contacts connect unpacking breaking coil and arrearage breaking coil respectively;Current transformer connect with three-phase conducting wire and electricity is arranged in
The top of card table.
Fuse protection is carried out using low capacity air switch in the cabinet.
Combined floodgate indicator light and load combined floodgate indicator light are inserted LED light before the table.
Fastening-type bolt is set between the cabinet and chamber door, and bolt is equipped with and seals up hole.
The electric card table skeleton includes support plate, support rod, transverse shifting slot and longitudinal movement slot, one end of support rod
It is fixed that the other end activity of support rod is arranged on the supporting plate, the upper and lower part of support plate be respectively equipped with transverse shifting slot and
Vertically move slot.
The support rod is V-shaped, is hingedly formed by two single poles.
The longitudinal movement slot and transverse shifting slot intersecting vertical is arranged.
The longitudinal movement slot is respectively provided at least one in the upper and lower part of support plate.
Advantages of the present invention effect is as follows:
1, two power supply contacts on power supply air switch are connect into unpacking breaking coil and arrearage breaking coil respectively, so i.e.
Guarantee that two control coils obtain electricity box protection, and save an air switch, reduce costs, makes to be laid out more adduction in electricity box
Reason.
2, using fastening-type bolt and nut model GB/T45-M5, while the hole 2mm is opened in bolt upper section, is sealed for seal
Table.Fastening-type bolt facilitates durable, and structure is simple, low in cost.The present invention uses fastening-type bolt lock, passes through stringent seal
Management can be such that three-phase and four-line electric card electricity box exclude because connecting rod door lock damages the destruction caused by electricity box.
3, electric energy dial framework can make electric energy meter arbitrarily adjust orientation up and down, occur other situations during being easily installed
And electric energy meter position is adjusted, so that meter IC card mouth is matched with electricity box bayonet.It avoids and destroys showing for electricity box window
As.
4, electricity box power supply indicator is more original saving energy 75% after the LED light that power is 1W, service life about ten
Ten thousand hours.
5, cartridge fuse is changed to air switch, electric elements is made to receive better protection, while reducing processing event
Spare unit element when barrier saves maintenance cost.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is electricity box lockset schematic diagram of the present invention.
Fig. 3 a, 3b are electric energy meter dial framework base schematic diagram of the present invention.
In figure, 1, close a floodgate before table indicator light, 2, load combined floodgate indicator light, 3, power switch, 4, current transformer, 5, unpack
Breaking coil, 6, arrearage breaking coil, 7, air switch, 8, load side line bank, 9, low capacity air switch, 10, ground connection guarantor
Protect line bank, 11, trip switch of unpacking;12, cabinet, 13, chamber door, 14, fastening-type bolt, 15, seal up hole;16, support plate,
17, support rod, 18, transverse shifting slot, 19, longitudinal movement slot, 20, money drawing plat.
Specific embodiment
Referring to the drawings, in conjunction with specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1-3, anti-four line money drawing plat electricity box of arrearage low voltage three-phase, including cabinet, electric card table skeleton, money drawing plat
20, combined floodgate indicator light 1 and load combined floodgate indicator light 2 before current transformer 4, table, money drawing plat connected load side line bank 8, ground connection
Line bank 10 and air switch 7 are protected, air switch connects trip switch 11 of unpacking, unpack breaking coil 5 and arrearage tripping line
Circle 6 is arranged on air switch, and two contacts of power switch connect unpacking breaking coil and arrearage breaking coil respectively;Electric current is mutual
Sensor 4 connect with three-phase conducting wire and the top of money drawing plat 20 is arranged in.
Fuse protection is carried out using low capacity air switch 9 in the cabinet.
Combined floodgate indicator light 1 and load combined floodgate indicator light 2 are inserted 1W ultra-thin LED indicator light before the table;And
Electricity box protrusion is less than 0.5CM.
Fastening-type bolt 14 is set between the cabinet 12 and chamber door 13, and bolt is equipped with 2mm diameter and seals up hole 15;Root
Double bolts can also be used according to needs.
The electric card table skeleton includes support plate 16, support rod 17, transverse shifting slot 18 and vertically moves slot 19, described
Support rod be V-shaped, hingedly formed by two single poles, one end of support rod is fixed on the supporting plate, the other end of support rod
Activity setting, the upper and lower part of support plate are respectively equipped with transverse shifting slot and longitudinal movement slot;It vertically moves slot and laterally moves
Dynamic slot intersecting vertical setting;It vertically moves slot and is respectively provided at least one in the upper and lower part of support plate.
In the design of whole electricity box, former load side switch is eliminated, line bank is used instead, facilitates user to draw load line, together
When original connect to the arrearage for drawing in load side switch trip conducting wire, connect in source-side switches, protected by electricity box.Current transformer is set
It sets in the top of money drawing plat, charge electric energy meter still can after unpack tripping and arrearage adjustment, improve acquisition success rate.Electricity
Energy table can finely tune up and down on dial framework, need to only adjust screw.After the completion of the built-in table of electricity box connects electricity work, by six rib spiral shells
Mother is fastened on bolt, seals up in bolt and passes through seal joint sealing at hole.Metering devices all in this way and other conducting wires will be by
The protection of electricity box, user side leave behind terminal connections row, as user needs wiring power failure only to need the power switch that stops.