DE102008031200A1 - Surge protection device for single or multi-core signal circuit, has base part fastened to mounting rail, and two plugging parts, each comprising two connecting terminals for respective electrical conductors - Google Patents

Abstract

Shown and described is an overvoltage protection device for protecting a multi-core signal circuit, with a on a support rail (2) latched base part (3) and at least one on the base part (3) attachable plug-in part (4), in which arranged at least one arrester protective circuit is.
In the surge protection device thereby an increase in the number of protection channels is simply and variably possible that the male part (4) has at least two terminals (6, 7) for at least one electrical conductor and that on the male part (4) a further male part (4 '. ), in which a protection circuit having at least one arrester is arranged, can be plugged on, wherein the further plug-in part (4 ') likewise has at least two connection terminals (6, 7) for at least one electrical conductor.

Description

The The invention relates to a surge protection device to protect a single or multi-core signal circuit, with a Mountable on a mounting rail base and with at least an attachable to the base part plug-in part in which a least a surge protective circuit is arranged.

interfaces in the field of measuring and control technology are against overvoltages far more sensitive than power systems. The sensitivity has thereby increased to the extent in which the use of electronic components, in particular transistors and thyristors increased in electrical equipment, systems and systems Has. Above all, they are increasingly in electrical and electronic Devices used integrated circuits to a large extent endangered by transient overvoltages.

electrical Circuits and electrical appliances work with the for they specified voltage, the rated voltage, normally trouble-free. This does not apply if surges occur. As overvoltages apply all voltages that are above the upper tolerance limit of Nominal voltage are. These include above all transient overvoltages, due to atmospheric discharges, as well occur due to switching operations or short circuits in power supply networks can and galvanic, inductive or capacitive in electronic Circuits can be coupled. To electric and electronic devices and the electricity and signal circuits, especially in the measurement, control and regulation, against Protecting transient overvoltages are overvoltage protection devices been developed to intercept overvoltage spikes or limit.

Such overvoltage protection devices for measuring, control and regulating technology have been marketed for many years by the applicant under the product name "PLUGTRAB" (cf. Phoenix Contact brochure "Surge protection TRABTECH 2007", pages 60 ff ). The known overvoltage protection devices are in particular designed as 2-channel or 4-channel devices, to which two or four signal conductors or one or two ground potential-operated signal circuits can be connected.

The known, under the product name "PLUGTRAB" sold overvoltage protection devices have been proven in practice for many years. Of the two-part construction, consisting of the base element and the plug, offers the user a high degree of maintenance comfort, since the base element, which contains all the terminals of the surge protection device always remains an integral part of the installation. In case of maintenance can thus easily the plug from the U-shaped base element pulled out and replaced with a new plug. In addition, the known surge protection devices thus particularly easy to different types of signal circuits connectable that a base element with optional different plugs can be combined.

A similar surge protection device is also from the DE 103 04 492 B4 known. In this overvoltage protection device, the modularity is further increased by not only the base part is designed for receiving the male part, but in addition a usable in the male part additional plug is provided. In this case, a part of the electrical components of the overvoltage protection circuit is arranged in the additional plug-in part. In the in the DE 103 04 492 B4 described embodiment, a spark gap as coarse protection and in the additional plug part a varistor is arranged as fine protection in the male part.

Both in the known from practice overvoltage protection devices as well as in the from DE 103 04 492 B4 known overvoltage protection device, the number of connectable to the surge protective device signal conductor or the number of signal circuits that can be protected with the surge protective device, limited by the number of existing in the base part terminals. If an overvoltage protection for more channels is required, two or more overvoltage protection devices are snapped next to each other on a mounting rail until the required number of terminals for the required number of channels is reached.

By the adjacent latching on the mounting rail are the respective overvoltage protection devices Although spatially summarized, an electrical Connection between the individual surge protective devices However, it does not automatically when snapped, but must by means of external Bridges are realized. Should be ensured that all surge protectors needed for an application have the same reference potential, so are additional Installation work required, which can lead to errors.

By juxtaposing several surge protectors to increase the number of connectable signal circuits always an increase in the space requirement in the width, ie in the longitudinal direction of the support rail, so that a subsequent Kanalalerhöhung is only possible if adjacent to an already on a mounting rail latched overvoltage protection device still has enough space available.

Of the present invention is therefore the object of an input described overvoltage protection device such to develop that as simple as possible and variable increase in the number of protection channels is possible.

These Task is with the above-described surge protection device initially solved by the fact that the male part at least two terminals for at least having an electrical conductor and that on the male part another plug-in part, in which at least one arrester having Protection circuit is arranged, can be plugged, with the other Plug-in part also at least two terminals for has at least one electrical conductor.

at the overvoltage protection device according to the invention is an increase in the number of protection channels thus achievable that on a support rail attachable, preferably latchable base part a plurality of plug-in parts one above the other can be stacked, with each additional Plug-in part in each case at least two terminals for has at least one electrical conductor. An increase The number of protection channels is thus not by a side by side of another - from one Base part and a plug-in part existing - overvoltage protection device, but by a horizontal plugging another plug-in part - on an already plugged on the base part plug - achieved. If several plug-in parts stacked on top of each other, so can the number of protection channels increased accordingly by a multiple become.

The Protective circuits of the individual plug-in parts each have a reference potential on, against which the surge protection can be constructed. has a surge protection device several plug-in parts It is necessary that the reference potentials of the individual plug-in parts are interconnected. According to one first preferred embodiment of the overvoltage protection device according to the invention Therefore, the base part has at least one connectable to reference potential Plug contact and the male part facing at its base Bottom at least one corresponding to the plug contact and to the reference potential of the protection circuit connected terminal plug contact on. The plug contact in the base part can, for example, here as a socket and the connector plug on the male part be designed as a pin. This ensures that the Attaching the male part to the base part automatically the reference potential of the male part with the reference potential of the base electrically is connected, wherein the reference potential of the base part in the Usually grounded via a connection to the mounting rail.

About that In addition, according to the advantageous embodiment the overvoltage protection device provided that the Plug-in part on its upper side facing away from the base at least one electrically connected to the connector plug Plug contact, in which a corresponding terminal plug contact another plug-in part can be inserted. This will achieve that also when plugging in another plug-in part the first, plugged on the base part plug-in part, the reference potential the further plug-in part connected to the reference potential of the base part becomes. When stacking the individual plug-in parts is thus automatically their reference potential from one male part to the next Plug-in part looped through and with the reference potential of the base part electrically connected. On the required in the prior art external bridging of the reference potentials of the individual overvoltage protection circuits can thus be dispensed with.

According to one Another advantageous embodiment provides that the Base part at least one terminal connected to the plug contact for a reference potential conductor. This can the reference potential of the base part led to the outside be, for example, via a reference potential conductor be connected to a second base part. Likewise also the plug-in part and the further plug-in part or the other plug-in parts in each case at least one connected to the connection plug contact Terminal for a reference potential conductor have, so that the reference potential of the individual Plug-in parts is accessible.

As known from the prior art, the base part of the overvoltage protection device according to the invention preferably also has a metallic mounting foot for fastening the overvoltage protection device to a mounting rail. About the mounting base while the reference potential of the base part and possibly provided in the base part terminal for the reference potential conductor can be connected to the grounded mounting rail. The prior art discloses two different types of base elements each having a different grounding capability. In the first variant, the reference potential of the base part and the terminal for the reference potential conductor are connected directly to the mounting rail via the metallic mounting base. In the second variant, the connection is made between with the mounting rail via a gas discharge. The user must, however, already in the selection of the base element for one of the two Er options to decide.

According to one advantageous embodiment of the overvoltage protection device according to the invention is arranged in the base part, a switching element, via that the reference potential or the terminal for the reference potential conductor either directly or indirectly over an arrester, in particular a gas-filled surge arrester, with the support rail are electrically connected. By the arrangement a mechanical or electrical switch, preferably one manually operable switch, such as a pushbutton, a rotary switch or a slide switch can thus optionally both grounding options with a base part be realized so that the user is not in advance decide for one of the two earthing options got to.

To a further development of the overvoltage protection device according to the invention has this next to the base part and at least one plug-in part In addition, another attachable to the top plug-in part Status module on. The status module has an evaluation unit for detecting the state of the arrester of the protective circuit of the male part or the plug-in parts and a remote signaling contact for remote signaling and / or an optical status display to indicate the state of the arresters the protective circuit of the male part or the male parts. is the surge protection device from several plug-in parts composed, the status module serves as a collection status module for all plug-in parts of the surge protective device. Since the status module is plugged onto the top plug-in part, forms it at the same time the upper conclusion of from the base part and the individual plug-in parts constructed surge protection device. This makes it particularly easy to have an optical in the status module Status display for indicating the state of the overvoltage arresters form, wherein the optical state display, for example, by a green and a red LED can be realized.

advantageously, the connection of the individual status message signals also takes place individual plug-in parts without an external Wiring or external bridging is necessary. For this is provided that each male part at its top at least one status plug contact and at least one at its bottom one connected to the status plug contact and to the status plug contact having corresponding status connector plug. When juxtaposing the individual plug-in parts is thus not only the reference potential but also the status message signal looped through by a male part to the next male part. In addition, the status module has at its the plug-in part facing bottom at least one status connector plug on, which is electrically connected to the evaluation unit and in the corresponding status plug contact at the top of a Plug-in part is inserted. This gives the status message signals the individual plug-in parts automatically when plugging in the status module on the male part to the evaluation unit.

According to one Another advantageous embodiment of the invention, the base module at least two additional terminals for at least one electrical conductor over which the surge protector with an external source of energy, especially for the Remote indication and indication of the state of the overvoltage protection device, can be connected. The connection of the base part over the other terminals supplied auxiliary power with the individual plug-in parts and the status module takes place also - as the connection of the individual status message signals the individual plug-in parts - without that external wiring or external bridging necessary is.

For this is provided that the base part at its top two Having auxiliary power plug contacts connected to the other terminals. In addition, each male part has two at its bottom Auxiliary power connector and at its top two, connected to the auxiliary power connectors and corresponding to the auxiliary power connector pins Power supply plug contacts on. In addition, the status module indicates At its the plug-in part facing the bottom auxiliary power connection plug contacts on, which are electrically connected to the evaluation unit and in the corresponding auxiliary power plug contacts on the top a plug-in part can be inserted. This will get the auxiliary power when juxtaposing the individual plug-in parts automatically from Base part to the individual plug-in parts and the status module.

in the individual there are now a variety of ways the overvoltage protection device according to the invention to design and develop. Reference is made to both to the claims subordinate to claim 1, as also to the following description of two preferred embodiments in conjunction with the drawings. In the drawings show

1 a first embodiment of an overvoltage protection device consisting of a base part, a plug-in part and a status module, in the mounted state,

2 the surge protective device according to 1 , when not yet mounted, diagonally from below,

3 a further perspective view of the overvoltage protection device according to 1 , in the unassembled state,

4 A second embodiment of an overvoltage protection device consisting of a base part, two plug-in parts and a status module, in the mounted state,

5 the surge protective device according to 4 , when not yet mounted, diagonally from below,

6 a further perspective view of the overvoltage protection device according to 4 , in the unassembled state,

7 a perspective view of a base module of an overvoltage protection device according to the invention.

1 shows an embodiment of an overvoltage protection device 1 with one on a mounting rail 2 ratcheted base part 3 , one on the base part 3 plugged plug part 4 and one on the plug part 4 plugged status module 16 as the upper termination of the surge protective device 1 , While 1 the surge protection device 1 shows in the assembled state is in the 2 and 3 the same surge protection device 1 shown in the not yet assembled state, ie there is only the base part 3 on a mounting rail 2 snapped on, but neither the male part 4 on the base part 3 still the status module 16 on the male part 4 attached.

The 4 to 6 show a further embodiment of an overvoltage protection device 1 , this overvoltage protection device 1 two plug-in parts 4 . 4 ' having. In addition, other variants of the surge protection device 1 possible, which differs from the surge protection devices shown in the figures 1 especially distinguish them by having more plug-in parts 4 ' , For example, three or four plug-in parts 4 ' , exhibit. Likewise, an overvoltage protection device 1 even just a base part 3 and a plug part 4 or several plug-in parts 4 . 4 ' have, ie without a status module 16 be educated.

This in 7 separately shown base part 3 has a terminal on one end face 5 for connecting a reference potential conductor. In addition, even on the second end face nor a terminal 5 be provided for connecting a reference potential conductor. The plug-in part 4 , in which a protective circuit is arranged with at least one arrester, in the illustrated embodiment, in each case two terminals on the two end faces 6 . 7 for two electrical conductors and one between the two terminals 6 . 7 arranged another terminal 8th for a reference potential conductor. The individual terminals 5 . 6 . 7 For example, they may be designed as screw terminals or as Zugfederanschlußklemmen; In addition, however, other connection techniques are possible.

Like from the 2 and 3 as well as the 5 and 6 it can be seen has the base part 3 on its top 9 one with the terminal 5 connected, designed as a plug socket plug contact 10 or with the terminals 5 connected, designed as sockets plug contacts 10 on. Corresponding to this are on the plug part 4 at the base part 3 facing bottom 11 designed as plug pins connection plug contacts 12 formed with the reference potential of the protection circuit and the terminals 8th are electrically connected to the reference potential conductor. When attaching the male part 4 on the base part 3 become the connection plug contacts 12 of the male part 4 into the plug contacts 10 of the base part 3 inserted, so that the reference potential of the plug-in part 4 arranged protection circuit with the reference potential of the base part 3 connected and thereby the reference potential of the male part 4 over the base part 3 and the mounting rail 2 can be grounded.

At its the base part 3 opposite top 13 has the plug part 4 at least one with the connector plug 12 electrically connected plug contact 14 on, in a corresponding terminal plug contact 12 ' another plug-in part 4 ' is pluggable. In the embodiment according to the 4 - 6 , in which on both end faces a terminal 8th provided and at the bottom 11 two connection plug contacts 12 are formed, are also on the top 13 two plug contacts 14 formed, in the two terminal connectors 12 ' another plug-in part 4 ' are pluggable.

Regardless of whether one or two port connectors 12 and one or two plug contacts 14 are formed is when plugging a male part 4 ' on a plug-in part 4 the reference potential of the protective circuit of the male part 4 ' automatically with the reference potential of the protective circuit of the male part 4 connected so that through the connection between the Anschlußsteckkontakt 12 ' and the plug contact 14 or between the connection plug contacts 12 ' and the plug contacts 14 and the electrical connection between the connector plug 12 and the plug contact 10 or between the connection plug contacts 12 and the plug contacts 10 in the base part 3 the reference potential of the male part 4 ' over the male part 4 to the base part 3 is looped through.

In particular from 7 it can be seen that in the base part 3 a trained example as a rotary switch switch 15 is arranged, over which the base part 3 or the terminal 5 optionally directly or indirectly via a - not shown here - arrester, in particular a gas-filled surge arrester, with the mounting rail 2 is electrically connectable. A user of the overvoltage protection device according to the invention 1 Thus, depending on the application between one of the two known from the prior art grounding possibilities of the base part 3 by appropriate actuation of the switch 15 choose.

Like, for example 1 is apparent, the status module indicates 16 on its top 17 an optical status display 18 on, which in the present case is formed by two LEDs. With the help of the optical status display 18 can the state or the status of the surge protective device 1 be displayed directly on the spot. Thus in the evaluation unit in the status module 16 the status of the individual arresters or protective circuits of the individual plug-in parts 4 . 4 ' can be evaluated, the evaluation needs a corresponding status message signal of each plug-in parts 4 . 4 ' , For looping through the individual status message signals of the individual plug-in parts 4 . 4 ' have the plug-in parts 4 . 4 ' at its top 13 . 13 ' designed as a plug socket status plug contact 19 . 19 ' and at their bottom 11 . 11 ' one with the status plug contact 19 . 19 ' connected corresponding, designed as a pin status connector plug 20 . 20 ' on. In addition, the status module indicates 16 at its the plug-in part 4 ' facing bottom 21 also designed as a pin status connector plug 22 on, which is electrically connected to the evaluation unit and in the corresponding status plug contact 19 ' in the plug part 4 ' is pluggable.

For remote indication of the state of the overvoltage protection device 1 indicates the status module 16 at its two end faces in each case two terminals 23 . 24 on with the evaluation unit in the status module 16 are electrically connected. In addition, in the top 17 of the status module 16 a functional shaft 25 arranged, for example, serves to receive a preferably multi-pole bridge, so that the state of the overvoltage protection device 1 about one in the function shaft 25 inserted bridge to an adjacent surge protection device 1 can be transferred.

The base part 3 points next to the two terminals 5 for a reference potential conductor on both ends two more terminals 26 . 27 on, over which the surge protection device 1 with an external power source, in particular for remote signaling and indication of the state of the overvoltage protection device 1 , can be connected. To the from the external power source to the terminals 26 . 27 applied auxiliary power to the individual plug-in parts 4 . 4 ' and the status module 16 to provide, has the base part 3 at its top 9 two with the other terminals 26 . 27 connected auxiliary power plug contacts 28 . 29 on. Also, at the bottom 11 . 11 ' the plug-in parts 4 . 4 ' two auxiliary power connection plug contacts each 30 . 31 respectively. 30 ' . 31 ' and at the top 13 . 13 ' the plug-in parts 4 . 4 ' two each, with the auxiliary power connector pins 30 . 31 respectively. 30 ' . 31 ' connected and to the auxiliary power connector contacts 30 . 31 respectively. 30 ' . 31 ' corresponding auxiliary power plug contacts 32 . 33 respectively. 32 ' . 33 ' educated.

Like from the 2 and 5 The status module can also be seen 16 at its the plug-in part 4 ' facing bottom 21 two auxiliary power connection plug contacts 34 . 35 on, which are electrically connected to the evaluation and in the corresponding auxiliary power plug contacts 32 . 33 at the top 13 of the male part 4 or in the auxiliary power plug contacts 32 ' . 33 ' at the top 13 ' of the male part 4 ' are pluggable. As a result, the auxiliary energy passes when plugging the individual plug-in parts 4 . 4 ' automatically from the base part 3 to the individual plug-in parts 4 . 4 ' and to the status module 16 ,

Besides, it is also in the top 9 of the base part 3 a functional shaft 36 formed, in which also a bridge can be inserted, so that the base part 3 via the terminals 26 . 27 supplied auxiliary power via a in the function shaft 36 inserted bridge to adjacent surge protection devices 1 also on the mounting rail 2 are locked on, can be forwarded.

In particular from the 1 and 4 it can be seen that the base part 3 , the plug-in part 4 or the plug-in parts 4 . 4 ' and the status module 16 all have the same width and the same length. In addition, from a comparison of 1 and 4 it can be seen that in the overvoltage protection device according to the invention 1 An increase in the number of protective channels does not lead to an increase in the width but only to an increase in the height.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10304492 B4 [0006, 0006, 0007]

Cited non-patent literature

• - Phoenix Contact brochure "Surge protection TRABTECH 2007", pages 60 ff [0004]

Claims (15)

Surge protection device for protecting a single or multi-core signal circuit, with one on a mounting rail ( 2 ) attachable base part ( 3 ) and with at least one on the base part ( 3 ) attachable plug-in part ( 4 ), in which a protective circuit having at least one arrester is arranged, characterized in that the plug-in part ( 4 ) at least two terminals ( 6 . 7 ) has for at least one electrical conductor and that on the male part ( 4 ) another plug-in part ( 4 ' ), in which a protective circuit having at least one arrester is arranged, can be plugged on, wherein the further plug-in part ( 4 ' ) also at least two terminals ( 6 ' . 7 ' ) for at least one electrical conductor. Overvoltage protection device according to claim 1, characterized in that the base part ( 3 ) at least one connectable with reference potential plug contact ( 10 ) and the male part ( 4 ) at its the base part ( 3 ) facing the underside ( 11 ) at least one to the plug contact ( 10 ) and connected to the reference potential of the protective circuit terminal plug contact ( 12 ) and that the male part ( 4 ) at its the base part ( 3 ) facing away from the top ( 13 ) at least one with the connection plug contact ( 12 ) electrically connected plug contact ( 14 ), in which a corresponding terminal plug contact ( 12 ' ) of another plug-in part ( 4 ' ) can be inserted. Overvoltage protection device according to claim 2, characterized in that the base part ( 3 ) at least one with the plug contact ( 10 ) connected terminal ( 5 ) for a reference potential conductor. Overvoltage protection device according to claim 2 or 3, characterized in that the plug-in part ( 4 ) at least one with the connection plug contact ( 12 ) connected terminal ( 8th ) for a reference potential conductor. Overvoltage protection device according to one of claims 2 to 4, characterized in that the connection plug contact ( 12 ' ) of the further plug-in part ( 4 ' ) is connected to the reference potential of the protective circuit and that the further plug-in part ( 4 ' ) at least one with the connection plug contact ( 12 ' ) connected terminal ( 8th ) for a reference potential conductor. Overvoltage protection device according to one of Claims 3 to 5, characterized in that in the base part ( 3 ) a switching element ( 15 ) is arranged, via which the at least one terminal ( 5 ) for the reference potential conductor either directly or indirectly via an arrester, in particular a gas-filled surge arrester, with the mounting rail ( 2 ) is electrically connected. Overvoltage protection device according to one of Claims 1 to 6, characterized in that a status module ( 16 ) on the top plug-in part ( 4 ' ), the status module ( 16 ) an evaluation unit for detecting the state of the arresters of the protective circuit of the male part ( 4 ) or the plug-in parts ( 4 . 4 ' ) and a remote signaling contact for remote signaling and / or a visual status indication ( 18 ) for indicating the state of the arresters of the protective circuit of the male part ( 4 ) or the plug-in parts ( 4 . 4 ' ) having. Overvoltage protection device according to claim 7, characterized in that the plug-in part ( 4 . 4 ' ) on its upper side ( 13 . 13 ' ) at least one status port contact ( 19 . 19 ' ) and on its underside ( 11 . 11 ' ) at least one, with the status port contact ( 19 . 19 ' ) and to the status port contact ( 19 . 19 ' ) corresponding status connector plug ( 20 . 20 ' ) having. Overvoltage protection device according to claim 8, characterized in that the status module ( 16 ) at its the plug-in part ( 4 ' ) facing the underside ( 21 ) at least one, with the evaluation unit electrically connected Statusanschlusssteckkontakt ( 22 ) connected to the corresponding status terminal contact ( 19 ' ) of the male part ( 4 ' ) can be inserted. Overvoltage protection device according to one of Claims 7 to 9, characterized in that the status module ( 16 ) at least one electrically connected to the evaluation unit terminal ( 23 . 24 ) for at least one electrical conductor for remote signaling of the state of the arresters of the protective circuit of the male part ( 4 ) or the plug-in parts ( 4 . 4 ' ) having. Overvoltage protection device according to one of Claims 7 to 10, characterized in that in the status module ( 16 ) at least one electrically connected to the evaluation unit functional shaft ( 25 ) is formed for receiving a bridge. Overvoltage protection device according to one of Claims 1 to 11, characterized in that the base module ( 3 ) at least two additional terminals ( 26 . 27 ) for at least one electrical conductor. Overvoltage protection device according to claim 12, characterized in that the base part ( 3 ) on its upper side ( 9 ) two with the other terminals ( 26 . 27 ) auxiliary power plug contacts ( 28 . 29 ), that the male part ( 4 . 4 ' ) on its underside ( 11 . 11 ' ) two auxiliary power connectors ( 30 . 30 ' . 31 . 31 ' ) and at its top ( 13 . 13 ' ) two, with the auxiliary power connection plug contacts ( 30 . 30 ' . 31 . 31 ' ) and to the auxiliary power connectors ( 30 . 30 ' . 31 . 31 ' ) corresponding auxiliary power plug contacts ( 32 . 32 ' . 33 . 33 ' ) and that the status module ( 16 ) at its the plug-in part ( 4 . 4 ' ) facing the underside ( 21 ) two auxiliary power connectors ( 34 . 35 ), which are electrically connected to the evaluation unit and in the corresponding auxiliary power plug contacts ( 32 . 32 ' . 33 . 33 ' ) at the top ( 13 . 13 ' ) of a male part ( 4 . 4 ' ) are plugged. Overvoltage protection device according to claim 12 or 13, characterized in that in the base module ( 3 ) at least one with the terminals ( 26 . 27 ) electrically connected functional shaft ( 36 ) is formed for receiving a bridge. Surge protection device with a base part ( 3 ), at least one on the base part ( 3 ) inserted plug-in part ( 4 ) and one on the top plug-in part ( 4 ' ) plugged status module ( 16 ), according to one of claims 1 to 14, characterized in that the base part ( 3 ), the male part ( 4 ) or the plug-in parts ( 4 . 4 ' ) and the status module ( 16 ) all have the same width and the same length.