CN2896639Y

CN2896639Y - Intelligent surge protector

Info

Publication number: CN2896639Y
Application number: CN 200620100164
Authority: CN
Inventors: 王文杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-03
Filing date: 2006-01-03
Publication date: 2007-05-02
Anticipated expiration: 2016-01-03

Abstract

A smart surge protection device comprises an enclosure and built in protection circuit, all phases are connected with a resistor sensitive to voltage, the lead in of the resistor sensitive to voltage adds a zero sequence current relay, the lead out is connected with a tripping device of a resistor sensitive to voltage, the tripping device of resistor sensitive to voltage is connected with lead entry port of the circuit breaker, the zero sequence current relay is connected with type VG54123 IC, the type VG54123 IC integrated circuit is connected with the rectifying circuit and the rectifying circuit is connected with the tripping device of the circuit breaker. The zero sequence current relay is also connected with another type CD4026 IC and the latter is connected with a LCD. This surge protection device both protects successive equipments and also protects the resistor sensitive to voltage so as to avoid self explosion of the resistor sensitive to voltage while indicate the user which resistor sensitive to voltage is damaged and numbers of lighting strikes.

Description

Intelligent surge protector

One, affiliated technical field

The utility model relates to a kind of Surge Protector (SPD).

Two, background technology

At present, all use piezo-resistance in the surge protection circuit of Surge Protector.As Chinese patent disclosed " supply socket Surge Protector " (ZL01258046.5, the day for announcing: 2002.11.20), it comprise housing and in the protective circuit of establishing, wherein thickness is much smaller than the housing waist centre position of plug slice length, be provided with the through hole that shape, size, distribution and figure place with plug slice match, the through hole edge of corresponding live wire and zero line is equipped with the metal contact respectively and places A, the B of the protective circuit in the protector head to be connected at 2; In the protective circuit, piezo-resistance MOV is connected with the A point with the common ends of resistance R, and the other end of resistance R is connected with the negative pole of luminous tube LED, and luminous tube LED positive pole is connected with the B point with the common ends of the other end of piezo-resistance MOV.But because piezo-resistance has unsettled leakage current, after the piezo-resistance of poor-performing was used a period of time, due to leakage current was revealed than conference.

Three, utility model content

The purpose of this utility model is to provide a kind of intelligent surge protector, and it not only can protect back level equipment, and can protect piezo-resistance effectively, avoids piezo-resistance that the self-destruction phenomenon takes place, and can inform that also which phase piezo-resistance of user is damaged and the thunderbolt number of times.

For achieving the above object; the solution that the utility model is taked is: a kind of intelligent surge protector; comprise housing and in the protective circuit of establishing; each all is connected to piezo-resistance mutually in the protective circuit; the piezo-resistance inlet wire increases zero-sequence transformer, an outlet and connects the piezo-resistance trip gear, and the piezo-resistance trip gear connects the circuit breaker end of incoming cables, and it is the VG54123 integrated circuit that zero-sequence transformer connects model; model connects rectification circuit for the VG54123 integrated circuit, and rectification circuit connects the circuit breaker tripping device.

It is the CD4026 integrated circuit that zero-sequence transformer also connects another model, and this model connects LCD for the CD4026 integrated circuit.

When leakage current during greater than specified leakage current; detecting signal by zero-sequence transformer, to give model be the VG54123 integrated circuit; amplify for the VG54123 integrated circuit and the rectification circuit rectification outputs to the circuit breaker tripping device through model; make the work of circuit breaker tripping device; deenergization, protection back level equipment.

When thunder-strike current during less than rated maximum current, lightning current discharges over the ground, and the circuit breaker tripping device can not worked.When thunder-strike current during more than or equal to rated maximum current; lightning current discharges over the ground; and detecting signal by zero-sequence transformer, to give model be the VG54123 integrated circuit; amplify for the VG54123 integrated circuit and the rectification circuit rectification outputs to the circuit breaker tripping device through model; make the work of circuit breaker tripping device; deenergization, protection back level equipment.When the secondary lightning current is arranged, can be effectively to discharging lightning current, protection equipment.

Because the piezo-resistance outlet connects the piezo-resistance trip gear, when the piezo-resistance temperature rise reached uniform temperature, the piezo-resistance trip gear was threaded off, and protects piezo-resistance effectively, avoided piezo-resistance that the self-destruction phenomenon takes place.

When piezo-resistance is damaged, pass through zero-sequence transformer when having leakage current over the ground, zero-sequence transformer detects signal, during greater than rated value, it is that the CD4026 integrated circuit is given LCD through internal conversion that detected signal is issued another model, send sound and light alarm, and which damages mutually to inform the user.When thunder-strike current during more than or equal to rated maximum current, detecting signal by zero-sequence transformer, to give another model be that the CD4026 integrated circuit is handled, counting once, by liquid crystal display displays.

Four, description of drawings

Fig. 1 is the electrical schematic diagram of present embodiment.

Five, embodiment

Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.

Referring to Fig. 1; a kind of intelligent surge protector; comprise housing and in the protective circuit of establishing; each phase N in the protective circuit; A '; B '; C ' is connected to piezo-resistance R1; R2; R3; R4; piezo-resistance R1; R2; R3; the R4 inlet wire increases a zero-sequence transformer L1; L2; L3; L4; outlet meets piezo-resistance trip gear K1; K2; K3; K4; piezo-resistance trip gear K1; K2; K3; K4 connects circuit breaker DZ end of incoming cables; zero-sequence transformer L1; L2 connects 2 pin that model is a VG54123 integrated circuit (IC) 2; zero-sequence transformer L3; L4 connects 1 pin that model is a VG54123 integrated circuit (IC) 2; model is 8 pin of VG54123 integrated circuit (IC) 2 meet rectification circuit D1-D4 by resistance R 5 a input; the input of rectification circuit D1-D4 also connects the positive pole of controllable silicon VG; the control utmost point of controllable silicon VG connects 7 pin and the capacitor C 1 that model is a VG54123 integrated circuit (IC) 2; model is that 6 pin of VG54123 integrated circuit (IC) 2 connect capacitor C 2; the negative pole of another input termination controllable silicon VG of rectification circuit D1-D4; capacitor C 1 other end; capacitor C 2 other ends and model are 3 pin of VG54123 integrated circuit (IC) 2; model is that 5 pin of VG54123 integrated circuit (IC) 2 connect the 4 pin ground connection that model is a VG54123 integrated circuit (IC) 2, the output termination circuit breaker tripping device J of rectification circuit D1-D4.

Referring to Fig. 1, zero-sequence transformer L1, L2 connect 1 pin that model is a CD4026 integrated circuit (IC) 1, and zero-sequence transformer L3, L4 connect 2 pin that model is a CD4026 integrated circuit (IC) 1, and model is that CD4026 integrated circuit (IC) 1 meets LCD LCD.

Referring to Fig. 1, during use, equipment or other load LODA connect the leading-out terminal of circuit breaker DZ.

Referring to Fig. 1,, detect 1 and 2 bipods that signal is given integrated circuit (IC) 2 by zero-sequence transformer L1, L2, L3, L4 when leakage current during greater than 4mA; output to circuit breaker tripping device J through E, F end; make circuit breaker tripping device J work, deenergization, protection back level equipment.When thunder-strike current during less than the Imax of SPD, lightning current discharges over the ground, and circuit breaker tripping device J can not work.When thunder-strike current during more than or equal to the Imax of SPD; lightning current discharges over the ground; and detect signal by zero-sequence transformer L1, L2, L3, L4 and give 1 and 2 bipods that model is a VG54123 integrated circuit (IC) 2; output to circuit breaker tripping device J through E, F end; make circuit breaker tripping device J work; deenergization, protection back level equipment.Because piezo-resistance R1, R2, R3, R4 outlet meet piezo-resistance trip gear K1, K2, K3, K4; as piezo-resistance R1, R2, R3, when the R4 temperature rise reaches uniform temperature; piezo-resistance trip gear K1, K2, K3, K4 thread off; protect piezo-resistance R1, R2, R3, R4 effectively, avoid piezo-resistance R1, R2, R3, R4 that the self-destruction phenomenon takes place.As piezo-resistance R1, R2, when R3, R4 damage, pass through zero-sequence transformer L1, L2, L3, L4 when having leakage current over the ground, zero-sequence transformer inspection L1, L2, L3, L4 measure signal, during greater than 3mA, detected signal is issued 1 and 2 pin that model is a CD4026 integrated circuit (IC) 1 (A, B two ends), give LCD LCD through internal conversion, send sound and light alarm, and which damages mutually to inform the user.When thunder-strike current during more than or equal to 4mA, detecting signal by zero-sequence transformer L1, L2, L3, L4, to give model be that CD4026 integrated circuit (IC) 1 is handled, and counting is once shown by LCD LCD.

Claims

1; a kind of intelligent surge protector; comprise housing and in the protective circuit of establishing; each phase (N in the protective circuit; A '; B '; C ') all is connected to piezo-resistance (R1; R2; R3; R4); it is characterized in that: piezo-resistance (R1; R2; R3; R4) inlet wire increases a zero-sequence transformer (L1; L2; L3; L4); outlet meets piezo-resistance trip gear (K1; K2; K3; K4); piezo-resistance trip gear (K1; K2; K3; K4) connect circuit breaker (DZ) end of incoming cables; zero-sequence transformer (L1; L2 L3; L4) connecing model is VG54123 integrated circuit (IC2); model is that VG54123 integrated circuit (IC2) connects rectification circuit (D1-D4), and rectification circuit (D1-D4) connects circuit breaker tripping device (J).

2, a kind of intelligent surge protector according to claim 1; it is characterized in that: it is CD4026 integrated circuit (IC1) that zero-sequence transformer (L1, L2, L3, L4) also connects another model, and model is that CD4026 integrated circuit (IC1) connects LCD (LCD).

3; a kind of intelligent surge protector according to claim 1; it is characterized in that: model is 8 pin of VG54123 integrated circuit (IC2) meet rectification circuit (D1-D4) by resistance (R5) a input; the input of rectification circuit (D1-D4) also connects the positive pole of controllable silicon (VG); the control utmost point of controllable silicon (VG) connects 7 pin and the electric capacity (C1) that model is a VG54123 integrated circuit (IC2); model is that 6 pin of VG54123 integrated circuit (IC2) connect electric capacity (C2); the negative pole of another input termination controllable silicon (VG) of rectification circuit (D1-D4); electric capacity (C1) other end; electric capacity (C2) other end and model are 3 pin of VG54123 integrated circuit (IC2), and model is that 5 pin of VG54123 integrated circuit (IC2) connect the 4 pin ground connection that model is a VG54123 integrated circuit (IC2).