Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T 5661 -1991
Terms of Appliance Switches
Published on 1992-06-16
Implementation by the Ministry of Machinery and Electronics Industry of the People's Republic of China on 1992-12-01
Mechanical Industry Standard of the People's Republic of China
Terms of Appliance Switches
1 Subject Content and Scope of Application
JB/T 5661 - 1991
This standard specifies the basic terminology of appliance switches, including general terms and terms related to switch types, components and operations. This standard is applicable to all types of appliance switches and the formulation of standards for appliance switches, the preparation of technical documents, the writing and translation of professional manuals, teaching materials or books and periodicals, and is used by personnel engaged in the production, scientific research, use and teaching of appliance switches. 2 Reference Standards
GB2900.1 Electrical Terminology
Basic Terminology
General Terms
Mechanical Switching Device Mechanical switching device A switching device that relies on the action of separable contacts to close and open one or more circuits. 3.2 Switch (mechanical) Switch (mechanical) A mechanical switching device that can connect, carry and disconnect current under normal circuit conditions (including specified overload operating conditions), and can also carry specified multiple currents under specified abnormal circuit conditions (such as short circuit). Note: The switch may be able to connect short-circuit currents, but cannot disconnect short-circuit currents. 3.3
Operation Operation
The moving contact is transferred from one position to the adjacent position. 3. 4
Pole (of a switch)
A switch component that is only connected to an independent conductive path in the switch, but does not include those components that fix all the poles together and enable the poles to operate.
If a switch has only one pole, it is called a single pole; if it has more than one pole and these poles are combined in a way that they act together, it is called a multi-pole (such as a two-pole, a three-pole, etc.). 3.5 Detachable part Detachable part The part that can be removed without tools after the switch is installed in normal use. 3.6 Tool Tool
Any object that can be used to move screws, nuts or similar fasteners, such as: screwdrivers, coins, etc. 3.7
Special purpose tool Special purpose tool
Tools that are unlikely to be easily obtained in ordinary households, such as wrenches for turning triangular head screws. Coins, screwdrivers and wrenches for turning square nuts or hexagonal nuts are not considered special tools. Normal use Normal use
The switch is used for the purpose and in the manner specified by the manufacturer. Ambient air temperature
Weekly air temperature
The temperature of the air around the switch measured under specified conditions after the switch is installed according to the manufacturer's regulations. 3.10 Proof tracking index (PTI) Proof tracking index (PTI) The withstand voltage value in V of an insulating material tested according to the specified method and subjected to 50 drops of specified liquid drops without failure due to tracking. Approved by the Ministry of Machinery and Electronics Industry on June 16, 1992 and implemented on December 1, 1992
JB/T 5661-1991
Special type mark (UT) Unique type reference 3.11
The identification mark on the switch. If the mark is provided to the switch manufacturer in its entirety, the manufacturer can provide a replacement that is completely interchangeable with the original switch in terms of electrical, mechanical, dimensional and functional parameters. 3.12 Common type mark (CT) Common type reference The identification mark on the switch. With this mark, the switch only needs to be marked with the marks for selection, installation and use specified in the appliance switch standard.
Cover or cover plate
Parts that are accessible and can be removed by tools after the switch is installed in normal use. 3.14
Signal indicator
A device connected to the switch and capable of displaying the state of the circuit. The device may or may not be controlled by the switch. Clearance
The shortest spatial distance between two conductive parts or between a conductive part and the metal foil covering the surface of an insulating accessible material. Creepage distance
The shortest distance along the surface of an insulating material between two conductive parts or between a conductive part and the metal foil covering the accessible surface of an insulating material.
4Terms for switch types
Incorporated switch
A switch assembled in or on an appliance that can be tested separately. Integrated switch Integrated switch
A switch that can only function when correctly installed and fixed in an appliance, and can only be tested when combined with the relevant parts of the appliance.
Switch of microgap construction 4.3
A switch whose gap between the moving and static contacts meets the requirements of micro disconnection. Rotary switch Rotary switch
The operating part of the switch is a rotating shaft. If the contact state needs to be changed, the operating part must be rotated to one or several specified positions. The operating part can be rotated arbitrarily, or it may be restricted to rotate in a certain direction. 4.5
Lever switch Lever$witch
To change the contact state, the operating part must be pulled to one or several specified positions. The operating part of the switch is a lever.
Rockor switch
The operating part of the switch is a low-looking lever (kneeler). If the contact state needs to be changed, the operating part must be turned to one or several specified positions.
Push-button switch
The operating part of the switch is a button. If the contact state needs to be changed, the button must be pressed. The switch can have one or more buttons. 4.8Cord operated switchThe operating part of the switch is a cord. If the contact state needs to be changed, the cord must be pulled. 4.9Push-pull switch
The operating part of the switch is a rod. If the contact state needs to be changed, the rod must be pushed or pulled to one or several specified positions. Automatic reset switchBiased switch
After being operated, if the external force acting on the operating part is released, the contacts and the operating part will automatically return to the switch in the preset positionCord switch
A switch that is independently packaged and connected to a power supply or an appliance through a flexible cord. The switch can be connected to one end of the flexible cord or in the middle of the flexible cord, and operated by hand, foot or similar human movements. Mainswitch
A switch used to isolate or connect the power supply.
5 Operation terms
Direct actuation
Move the operating member of the switch by hand, foot or other human movements. Indirect actuation
Move the operating member of the switch indirectly by a part (such as a door) on the appliance or equipment equipped with the switch. Transmission mechanism
Actuatingmeans
Part between the operating member and the contact mechanism to realize the contact movement. Actuating member
A part of the switch, which causes the switch to produce an operation by pulling, pushing, rotating or other means of movement. Operating cycle
Continuous operation of switching from one position to another → position and then returning to the starting position. If there are multiple positions, all other positions must be passed through successively.
Note: Continuous operations that do not constitute an operating cycle are called operating sequences. 5.6 Operating sequence Operating sequence The order in which the contacts that control each circuit in a multi-way switch are "closed" and "opened". 5.7 Full-disconnection Except for the grounding electrode, the contact distance of all poles can ensure that the power supply and the parts to be disconnected meet the requirements of basic insulation.
FMicro-disconnection
Micro-disconnection
The contact distance of at least one pole is sufficient to ensure reliable function. There are only dielectric strength requirements but no size requirements for the contact distance. Note: Micro-disconnection ensures that the disconnection function is reliable. 6 Connection terms
6.1 External conductor
External conductor
Any cable, cord, core wire or conductor with a part outside the switch or outside the appliance equipped with the switch. The external conductor may be a power supply lead, or a connection between separate parts of the appliance, or it may be part of the fixed wiring. Integrated conductor
A conductor inside the switch or used as a permanent internal interconnection between the terminals (or ends) of the switch. 3 Internal conductor
Any cable, cord, core wire or conductor inside an appliance or equipment, neither an external wire nor an internal wire. 6.4 Conductor with special preparation Conductor with special preparation at the end. Special preparation includes soldering of stranded conductors, use of cable lugs, formation of end rings, etc., but does not include shaping of the conductor before insertion into the terminal or twisting of the separated core wires. 5 Type X attachment
A connection method that can replace the original flexible cable or cord with a flexible cable or cord that does not require special preparation without using special tools.
Type mattagment
6.6 Type M attachment
A connection method that can replace the original flexible cable or cord with a specially prepared flexible cable or cord (for example, with a cord sheath or with a crimped end) without using special tools. 3
6.7Y-type connection TypeYattachment
JB/T5661-1991
A connection method in which the cable or cord can be replaced only with special tools that are usually only available in the manufacturer and its agent. Note: This connection method can use a flexible cable or cord, or a specially prepared electric wire or wire or cord. 6.8Z-type connection TypeZattachment
A connection method in which the switch must be destroyed to replace the wire. 7Terminals and end terms
7.1 (Wiring) Terminal
A reusable conductive part used for electrical connection in a switch. No special tools or special operations are required for electrical connection.
7.2Screwless terminalScrewless terminal that uses a non-threaded method to directly or indirectly connect wires or connect multiple wires to each other, and can be disconnected from the wire after connection.
Note: The following devices are not considered as screwless terminals: terminals that require special accessories before the wires can be connected, such as quick-connect plug terminals; terminals that require the wires to be coiled, such as coiled joints; terminals that use edges or tips to pierce the insulation layer and directly touch the conductor. 7.3 Screw-type terminals Screwtypeterminals are terminals that use screws or nuts to directly or indirectly connect wires or connect multiple wires to each other, and the wires can be disconnected after connection. 7.4 Screwterminals Screwterminal
A type of screw-type terminal. The wire is clamped under the screw head, and the clamping force can be applied directly by the screw head, or through intermediary parts such as heat rings, pressure plates, or anti-loose parts.
7.5 Studterminal
A type of screw-type terminal. The wire is clamped under the nut, and the clamping force can be applied directly by a nut with an appropriate shape, or through intermediary parts such as washers, pressure plates, or anti-loose parts. 7.6 Pillar terminal
A type of screw terminal. The wire is inserted into a hole or cavity and clamped under the screw rod. The clamping force can be applied directly by the screw rod or by the screw rod through an intermediate clamping piece. Saddle terminal
A type of screw terminal. The wire is clamped under the saddle pressure plate with two or more screws or nuts. 7.8 Lug terminal
A type of screw terminal. The cable lug or busbar is clamped directly or indirectly with screws or nuts. 7.9 Sleeve terminal
Mantie terminal
A type of screw terminal. The wire is clamped to the bottom of the groove on the threaded bolt with a nut. The wire can be pressed to the bottom of the groove by a washers of appropriate shape placed under the nut, or by the core column in the middle of the nut if the nut is a cap nut, or by an equivalent member to transmit pressure from the nut to the wire in the groove. 7.10 Termination
A connector between two or more conductive parts that can only be connected or replaced by special tools or specific operations. 7.11
Flat quick-connect terminationAn electrical connector that includes a plug and a socket that can be quickly plugged in and out without tools. SocketFemnleconnector
The part of the flat quick-connect terminal that is pushed onto the plug. 7.13 Tabterminal
JB/T 5661 -1991
The part of the flat quick-connect terminal that is inserted into the socket, as a part of the switch and combined with the switch. 7.14
Solderterminal
A conductive component of a switch that can be formed into a terminal by soldering. 8 Pollution Terminology
8.1 Pollution
Pollusion
Any foreign solid, liquid or gaseous impurity that may cause a permanent reduction in the dielectric strength or surface resistivity. Temporary free gases are not considered pollutants. NOTE,
MicroenvironmentMicro-environment
The environmental conditions immediately surrounding the considered clearances and creepage distances, excluding the pollutants generated by the switch itself during normal operation. Pollution degree of the microenvironment
CleansituationCleansituation
No pollution or only non-conductive pollutants are present, which have no effect. NormalsituationNormalsituation
Normally only non-conductive pollutants are present, but it must be expected that temporary conductivity may occasionally occur due to condensation. Dirtysituation
The presence of conductive dirt, or the presence of dry, non-conductive pollutants that are expected to become conductive due to condensation. 9 Insulation terms
Basic insulation
Basic insulation
Insulation on live parts that provides basic protection against electric shock. 9.2
Supplementary insulation
Supplementary insulation
Independent insulation used outside basic insulation to prevent electric shock in the event of damage to basic insulation. tDouble insulation
Double insulation
Insulation that has both basic insulation and supplementary insulation, 9.4 Reinforced insulation Reinforcedinsulation A separate insulating structure on live parts that has the same degree of protection as double insulation. Note: The term insulation structure does not mean that the insulation must be a homogeneous piece, it can be composed of several insulating layers that cannot be tested separately like supplementary insulation or basic insulation.
9.5 Working insulation Opertinal insulation Insulation between live parts with different potentials that is necessary to ensure the correct operation of the switch during its service life. 9.Class 60 appliances Clas0appliance
Appliance that relies on basic insulation for protection against electric shock. There is no connection measure between the accessible conductive parts (if any) and the protective conductor in the fixed installation and wiring. In the event of damage to the basic insulation, protection must be provided in accordance with the surrounding environment. Class I appliances ClassIappliance
Not only rely on basic insulation for protection against electric shock, but also include an additional safety measure, that is, the accessible conductive parts (non-live parts) are connected to the protective (grounding) conductor in the fixed installation and wiring, so that the accessible conductive parts will not become live parts even when the basic insulation fails. Class II appliances ClassⅡappliance
Equipment that not only relies on basic insulation for protection against electric shock, but also provides additional safety measures such as double insulation or reinforced insulation, without protective grounding measures and does not rely on equipment conditions. 9.9 ClassⅡappliance ClassⅡappliance
Appliance that relies on safety extra-low voltage power supply for protection against electric shock, and the voltage generated inside will not be higher than the safety extra-low voltage. 5
Push button switch
Saddle terminal
Flat quick-connect terminal
Actuator
Operation sequence
Operation cycle
Transmission mechanism·
Electrical clearance
Power switch
Class I appliance
Supplementary insulation
Attached switch
Cover, cover plate·
Lever switch
Working insulation
Basic insulation
Mechanical switch
Reinforced insulation
Indirect operation…
JB/T 5661 - 1991
Terminal lug,
Connection terminal
(switch) pole
Switch (mechanical):
Removable (parts)
Pull-cord switch:
Class 0 appliances
Screw terminal…
Screw-type terminal.
Screw terminal
M type connection
Resistant tracking index
Internal wiring
Internal wire
Creep distance
Split switch
Plate switch,
Clean state
Soft wire switch
Class II appliances
Double insulation
Sleeve simple terminal
General model
Push-pull switch
External wiring
Complete disconnection
Micro environment,
Micro gap structure switch
Micro disconnection
Screwless terminal.
Solder terminal
Signal indicator
X-type connection
rotary switch
JB/T5661-1991
[Class appliances.
Y-type connection
C050808158058000500500000
dirty state·
normal use
normal state
automatic reset switch
direct operation
surrounding air temperature·
pillar terminal,
Z-type connection
specially prepared wire
special tool·
special model
.........
actuating means
actuating member
ambient air temperature
basic insulation
biased switch
class 0 appliance
class I appliance
class I appliance
class I appliance **..
clean situation
++++++++++o++++++
clearance ...
commenttypere ference
conductorwithspccial preparationcord opcrated switch
cord switch .....
cover or covcrplate *.....creepage distance
detachable part
direct actuation
dirty situation
double insulation
external conductor
female connector
flat quick-connect terminationfull-disconnection
incorporated switch
JB/T5661-1991
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*****8.3.3
indirect actuatio
integrated conductor
integrated switch ....
internal conductor
levers witch
lugterminal
main switch ..
mantle terminal
mechanical switching divice
micro-disconnection
micro-environment
normal situation
normaluse
operating cycle
operating sequcnce
operation
operationinsulation
pillar terminal
pole(of a switch)
pollution
proof tracking index(PTI)...push-button switch
push-pull switch
reinforced insulation
rocker switch
rotary switch
saddle terminal|| tt||screwless terminal
screw terminal
JB/T 5661 - 1991
screw type terminal
signal indicator
soider terminal
special purpose tool
stud terminal .....
supplementary insulation
switch(mechanical)
switchofmicro-gapconstructiontab terminal
terminal
termination
tool ....
type M attachment
type 1
10..0.0000...00.0.0.a.01
. 7.1010109 Class Ⅱ appliances Class Ⅱ appliances
Apparatus that relies on extra-low voltage for protection against electric shock and whose internal voltage does not exceed the extra-low voltage. 5
Push button switch
Saddle terminal
Flat quick-connect terminal
Actuator
Operation sequence
Operation cycle
Transmission mechanism·
Electrical clearance
Power switch
Class I appliances
Supplementary insulation
Attached switch
Cover, cover plate·
Lever switch
Working insulation
Basic insulation
Mechanical switch and electrical appliance
Reinforced insulation
Indirect operation…
JB/T 5661 - 1991
Terminal lug,
Connection terminal
(switch) pole
Switch (mechanical):
Removable (parts)
Pull-cord switch:
Class 0 appliances
Screw terminal…
Screw-type terminal.
Screw terminal
M type connection
Resistant tracking index
Internal wiring
Internal wire
Creep distance
Split switch
Plate switch,
Clean state
Soft wire switch
Class II appliances
Double insulationbzxZ.net
Sleeve simple terminal
General model
Push-pull switch
External wiring
Complete disconnection
Micro environment,
Micro gap structure switch
Micro disconnection
Screwless terminal.
Solder terminal
Signal indicator
X-type connection
rotary switch
JB/T5661-1991
[Class appliances.
Y-type connection
C050808158058000500500000
dirty state·
normal use
normal state
automatic reset switch
direct operation
surrounding air temperature·
pillar terminal,
Z-type connection
specially prepared wire
special tool·
special model
.........
actuating means
actuating member
ambient air temperature
basic insulation
biased switch
class 0 appliance
class I appliance
class I appliance
class I appliance **..
clean situation
++++++++++o++++++
clearance ...
commenttypere ference
conductorwithspccial preparationcord opcrated switch
cord switch .....
cover or covcrplate *.....creepage distance
detachable part
direct actuation
dirty situation
double insulation
external conductor
female connector
flat quick-connect terminationfull-disconnection
incorporated switch
JB/T5661-1991
0a0aa000000e.e00.
*****8.3.3
indirect actuatio
integrated conductor
integrated switch ....
internal conductor
levers witch
lugterminal
main switch ..
mantle terminal
mechanical switching divice
micro-disconnection
micro-environment
normal situation
normaluse
operating cycle
operating sequcnce
operation
operationinsulation
pillar terminal
pole(of a switch)
pollution
proof tracking index(PTI)...push-button switch
push-pull switch
reinforced insulation
rocker switch
rotary switch
saddle terminal|| tt||screwless terminal
screw terminal
JB/T 5661 - 1991
screw type terminal
signal indicator
soider terminal
special purpose tool
stud terminal .....
supplementary insulation
switch(mechanical)
switchofmicro-gapconstructiontab terminal
terminal
termination
tool ....
type M attachment
type 1
10..0.0000...00.0.0.a.01
. 7.109 Class Ⅱ appliances Class Ⅱ appliances
Apparatus that relies on safety extra-low voltage for power supply to protect against electric shock and whose internal voltage will not exceed the safety extra-low voltage. 5
Push button switch
Saddle terminal
Flat quick-connect terminal
Actuator
Operation sequence
Operation cycle
Transmission mechanism·
Electrical clearance
Power switch
Class I appliances
Supplementary insulation
Attached switch
Cover, cover plate·
Lever switch
Working insulation
Basic insulation
Mechanical switch and electrical appliance
Reinforced insulation
Indirect operation…
JB/T 5661 - 1991
Terminal lug,
Connection terminal
(switch) pole
Switch (mechanical):
Removable (parts)
Pull-cord switch:
Class 0 appliances
Screw terminal…
Screw-type terminal.
Screw terminal
M type connection
Resistant tracking index
Internal wiring·
Internal wire
Creep distance
Split switch·
Plate switch,
Clean state
Soft wire switch
Class II appliances
Double insulation
Sleeve simple terminal
General model
Push-pull switch·
External wiring
Complete disconnection
Micro environment,
Micro gap structure switch
Micro disconnection
Screwless terminal.
Solder terminal
Signal indicator
X-type connection
rotary switch
JB/T5661-1991
[Class appliances.
Y-type connection
C050808158058000500500000
dirty state·
normal use
normal state
automatic reset switch
direct operation
surrounding air temperature·
pillar terminal,
Z-type connection
specially prepared wire
special tool·
special model
.........
actuating means
actuating member
ambient air temperature
basic insulation
biased switch
class 0 appliance
class I appliance
class I appliance
class I appliance **..
clean situation
++++++++++o++++++
clearance ...
commenttypere ference
conductorwithspccial preparationcord opcrated switch
cord switch .....
cover or covcrplate *.....creepage distance
detachable part
direct actuation
dirty situation
double insulation
external conductor
female connector
flat quick-connect terminationfull-disconnection
incorporated switch
JB/T5661-1991
0a0aa000000e.e00.
*****8.3.3
indirect actuatio
integrated conductor
integrated switch ....
internal conductor
levers witch
lugterminal
main switch ..
mantle terminal
mechanical switching divice
micro-disconnection
micro-environment
normal situation
normaluse
operating cycle
operating sequcnce
operation
operationinsulation
pillar terminal
pole(of a switch)
pollution
proof tracking index(PTI)...push-button switch
push-pull switch
reinforced insulation
rocker switch
rotary switch
saddle terminal|| tt||screwless terminal
screw terminal
JB/T 5661 - 1991
screw type terminal
signal indicator
soider terminal
special purpose tool
stud terminal .....
supplementary insulation
switch(mechanical)
switchofmicro-gapconstructiontab terminal
terminal
termination
tool ....
type M attachment
type 1
10..0.0000...00.0.0.a.01
. 7.101010
commentypereference
conductorwithspccial preparationcord opcrated switch
cord switch .....
cover or covcrplate *.....creepage distance
detachable part
direct actuation
dirty situation
double insulation
external conductor
female connector
flat quick-connect terminationfull-disconnection| |tt||incorporated switch
JB/T5661-1991
0a0aa000000e.e00.
*****8.3.3
indirect actuatio
integrated conductor
integrated switch ....
internal conductor
leverswitch
lugterminal
main switch ..
mantle terminal
mechanical switching divice
micro-disconnection
micro-environment
normal situation
normaluse
operating cycle
operating sequcnce
operation
operationinsulation
pillar terminal| |tt||pole(of a switch)
pollution
proof tracking index(PTI)...push-button switch
push-pull switch
reinforced insulation
rocker switch
rotary switch
saddle terminal
screwless terminal
screw terminal
JB/T 5661 - 1991
screw type terminal
signal indicator
soider terminal
special purpose tool| |tt||stud terminal .....
supplementary insulation
switch(mechanical)
switchofmicro-gapconstructiontab terminal
terminal
termination|| tt||tool ....
type M attachment
type X attachment
type Yattachment
type Z attachment
uniquetype reference||tt| |JB/T 5661 -1991
10..0.0000...00.0.0.a.01
. 7.10
commentypereference
conductorwithspccial preparationcord opcrated switch
cord switch .....
cover or covcrplate *.....creepage distance
detachable part
direct actuation
dirty situation
double insulation
external conductor
female connector
flat quick-connect terminationfull-disconnection| |tt||incorporated switch
JB/T5661-1991
0a0aa000000e.e00.
*****8.3.3
indirect actuatio
integrated conductor
integrated switch ....
internal conductor
leverswitch
lugterminal
main switch ..
mantle terminal
mechanical switching divice
micro-disconnection
micro-environment
normal situation
normaluse
operating cycle
operating sequcnce
operation
operationinsulation
pillar terminal| |tt||pole(of a switch)
pollution
proof tracking index(PTI)...push-button switch
push-pull switch
reinforced insulation
rocker switch
rotary switch
saddle terminal
screwless terminal
screw terminal
JB/T 5661 - 1991
screw type terminal
signal indicator
soider terminal
special purpose tool| |tt||stud terminal .....
supplementary insulation
switch(mechanical)
switchofmicro-gapconstructiontab terminal
terminal
termination|| tt||tool ....
type M attachment
type X attachment
type Yattachment
type Z attachment
uniquetype reference||tt| |JB/T 5661 -1991
10..0.0000...00.0.0.a.01
. 7.10
type M attachment
type X attachment
type Yattachment
type Z attachment
uniquetype reference
|tt||10..0.0000...00.0.0.a.01
. 7.10
type M attachment
type X attachment
type Yattachment
type Z attachment
uniquetype reference
|tt||10..0.0000...00.0.0.a.01
. 7.10
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