CN2528103Y

CN2528103Y - Earth leakage breaker

Info

Publication number: CN2528103Y
Application number: CN 02218999
Authority: CN
Inventors: 周圣博
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-19
Filing date: 2002-02-19
Publication date: 2002-12-25
Anticipated expiration: 2012-02-19

Abstract

The utility model relates to a bipolar current leakage circuit breaker. The close and open of a moving and a static contacts are controlled by a bimetallic piece in a handle and an over-load protection mechanism and an iron core in a short-circuit protection mechanism through an operating mechanism; a wire of an incoming line terminal is connected with the moving contact through the bimetallic piece; the static contact is connected with one end of a winding of the short-circuit protection mechanism; wires of every poles that are connected with the other end of the winding of the short-circuit protection mechanism pass through a zero sequence transformer and then are connected with an outgoing line terminal; the zero sequence transformer is communicated with a current leakage release; one end of a core rod of the current leakage release and a pin lift of the short-circuit protection mechanism coordinate with the linkage operating mechanism. The utility model overcomes the weaknesses of the prior art of complicated structure, large size, complex assemble and low reliability. The whole size is reduced through integral design. The utility model has the advantages of simple and compact structure, convenient installation, saving the cost of current leakage circuit breaker and a matched case of the circuit breaker, and higher operating reliability.

Description

Piece together utmost point residual current circuit breaker

The utility model relates to a kind of assembly utmost point residual current circuit breaker.

Traditional assembly utmost point residual current circuit breaker; all be to set up a leakage protection module in the side of circuit breaker; both are for the absolute construction of split; middle by other related part connection interlock; comprise zero-sequence transformer, circuit board and release in the leakage protection module, the transition lead that the leading-out terminal of circuit breaker is drawn passes the zero-sequence transformer in the leakage protection module, and electric leakage signal is after circuit board is handled; release lever in the release is stirred the snap close action in the circuit breaker, makes the circuit breaker disjunction.Obviously, above-mentioned bipolar residual current circuit breaker exists complex structure, volume is big, assembling is loaded down with trivial details, reliability is lower defective.

The purpose of this utility model is to solve existing assembly utmost point residual current circuit breaker to have complex structure, volume is big, assembling is loaded down with trivial details, reliability is lower problem.The utility model comprises housing; handle; snap close; operating mechanism; moving; fixed contact; overload protecting mechanism and short current protective mechanism; handle; bimetal leaf in the overload protecting mechanism and the iron core in the short current protective mechanism are moving by operating mechanism control respectively; fixed contact deciliter; the lead of input terminal is connected on the moving contact by bimetal leaf; fixed contact connects an end of short current protective mechanism winding; after all passing zero-sequence transformer, the lead of each utmost point connection short current protective mechanism winding other end connects outlet terminal; zero-sequence transformer is communicated with leakage tripping device by electron plate, and core bar one end in the leakage tripping device cooperates the interlock operating mechanism with the push rod in the short current protective mechanism.

The utility model is by above-mentioned specific design; circuit breaker and residual current protective unit can be assemblied in the same housing of touching numberization; volume when having dwindled assembling greatly has cost, functional reliability advantage of higher simple and compact for structure, easy for installation, that save residual current circuit breaker itself and supporting casing thereof.

Below in conjunction with drawings and Examples detailed content of the present utility model is described.

Accompanying drawing is the structural representation in the right chamber of the utility model housing;

As shown in the figure; the utility model comprises housing 1; handle 2; snap close 17; operating mechanism 3; moving; fixed contact 4; 5; overload protecting mechanism and short current protective mechanism 6; handle 2; bimetal leaf 7 in the overload protecting mechanism and the push rod 8 in the short current protective mechanism 6 are moving by operating mechanism 3 controls respectively; fixed contact 4; 5 deciliter; the lead 9 of input terminal 16 is connected on the moving contact 4 by bimetal leaf 7; fixed contact 5 connects an end of short current protective mechanism 6 windings; the lead 10 that each utmost point connects the short current protective mechanism 6 winding other ends all passes zero-sequence transformer 11 back connection outlet terminals 12; zero-sequence transformer 11 is communicated with leakage tripping device 14 by electron plate 13, and core bar 15 1 ends in the leakage tripping device 14 cooperate interlock operating mechanism 3 with the push rod 8 in the short current protective mechanism 6.Overload protection of the present utility model and short-circuit protection all adopt traditional operation principle, under overload, and bimetal leaf 7 bendings in the overload protecting mechanism, behind link rod 16 pulling snap closes 17, operating mechanism 3 actuating mechanisms are threaded off; During short circuit, the winding work in the short current protective mechanism 6, push rod 8 ejects, and directly touches snap close 17 mechanism is threaded off; And under the electric leakage state; after by zero-sequence transformer 11 detected electric leakage signal being delivered to electron plate 13 processing and amplifying, restart the core bar 15 in the leakage tripping device 14, the push rod 8 in the core bar 15 1 ends interlock short current protective mechanism 6; make snap close 17 actions, finish electric leakage dropout process.

Claims

1; a kind of assembly utmost point residual current circuit breaker; comprise housing; handle; snap close; operating mechanism; moving; fixed contact; overload protecting mechanism and short current protective mechanism; handle; bimetal leaf in the overload protecting mechanism and the iron core in the short current protective mechanism are moving by operating mechanism control respectively; fixed contact deciliter; the lead of input terminal is connected on the moving contact by bimetal leaf; fixed contact connects an end of short current protective mechanism winding; it is characterized in that: the lead (10) that each utmost point connects short current protective mechanism (6) the winding other end all passes zero-sequence transformer (11) back connection outlet terminal (12); zero-sequence transformer (11) is communicated with leakage tripping device (14) by electron plate (13), and core bar (15) one ends in the leakage tripping device (14) cooperate interlock operating mechanism (3) with the push rod (8) in the short current protective mechanism (6).