Low-voltage switchgear and controlgear - Part 6-2: Multiple function equipment - Control and protective switching devices (or equipment) (CPS)
1 Scope
This document applies to control and protective switching devices (or equipment) (CPS), the main contacts of which are intended to be connected to circuits of rated voltage not exceeding 1 000 V AC or 1 500 V DC.
It covers control and protective switching device (CPS):
——which provides protective and control functions for circuits and motors;
——where its control function is operated exclusively otherwise than by hand;
——which provides continuity of service after over-current conditions; and
——which can have additional functions, such as isolation or communication.
This document does not apply to:
——auxiliary contacts, covered by IEC 60947-5-1 ;
——CPS used downstream to frequency drive;
Note: Additional requirements for CPS used downstream to frequency drive are under consideration for the next maintenance cycle.
——the use of the product with additional measure within explosive atmospheres, covered by IEC 60079 (all parts);
——embedded software design rules, covered by IEC TR 63201 ;
——cyber security aspects, covered by IEC TS 63208.
The object of this document is to state:
——the characteristics of CPS's;
——the conditions with which CPS's are complying with reference to their operation and
behaviour, their dielectric properties, the degree of protection provided by their enclosure
where applicable, its construction including safety measures against electric shock, fire
hazard and mechanical hazard;
——the tests intended to verify that these conditions have been met, and the methods to be adopted for these tests;
——the information to be marked on or given with the CPS's.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 755-2019 Rotating electrical machines-Rating and performance (IEC 60034-1:2017, IDT)
GB/T 17045-2020 Protection against electric shock - Common aspects for installations and equipment (IEC 61140:2016, IDT)
GB/T 19334-2021 Dimensions of low-voltage switchgear and controlgear - Standardized mounting on rails for mechanical support of switchgear, controlgear and accessories (IEC 60715:2017, IDT)
ISO 3864-2 Graphical symbols - Safety colours and safety signs - Part 2: Design principles for product safety labels
......
3 Terms and definitions
3.1 General
For the purposes of this document, the terms and definitions of IEC 60947-1:2020, as well as the following terms, definitions, symbol and abbreviations apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
——IEC Electropedia: available at http://www.electropedia.org/
——ISO Online browsing platform: available at http://www.iso.org/obp
3.2 Terms and definitions related to control and protective switching device (CPS)
3.2.1
control and protective switching device; CPS
mechanical switching device with a control function operated otherwise than by hand capable of:
——making, carrying and breaking currents under normal conditions;
——making, carrying for a specified time in overload condition;
——breaking currents under specified abnormal operating condition such as those of short-circuits;
——continuity of service, with or without local manual operating means
Note 1: The term "with a control function operated otherwise than by hand" means that the device is intended to be controlled and kept in working position from one or more external controls.
Note 2: A CPS can consist of a single device but is always rated as a unit. Coordination can be either inherent or obtained by correct selection of releases in accordance with the manufacturer's instructions.
3.2.2
direct-on-line CPS
CPS which connects the line voltage across the motor terminals in one step
3.2.3
reversing CPS
CPS for starting a motor, intended to cause a motor to reverse the direction of rotation by
reversing the motor primary connections when the motor is not running
Note 1: An application where reversing the motor primary connections while the motor is running is called plugging.
3.2.4
electronically controlled electromagnet
electromagnet in which the coil is controlled by a circuit with active electronic elements
[SOURCE: GB/T 14048.4-2020, 3.2.8]
3.2.5
dedicated wiring accessory
prefabricated connection wiring system specifically intended for identified switchgear or
controlgear
Note 1: A dedicated wiring accessory can be integrated in the switchgear or controlgear or delivered separately.
Note 2: A typical dedicated wiring accessory is for example a connection link.
[SOURCE: GB/T 14048.4-2020, 3.3.32]
3.2.6
phase-loss sensitive relay or release
(motor protection) multipole relay or release for motor protection which operates in case of loss of phase in accordance with specified requirements
3.2.7
under-current relay or release
relay or release which operates automatically when the current through it is reduced below a predetermined value
3.2.8
under-voltage relay or release
relay or release which operates automatically when the voltage applied to it is reduced below a predetermined value
3.2.9
stall relay or release
electronic overload relay or release which operates when the current has not decreased below a predetermined value for a specific period of time during start-up or when the relay or the release receives the input indicating there is no rotation of the motor after a predetermined time in accordance with specified requirements
Note 1: Explanation of stall: rotor locked during start.
Note 2: With appropriate adjustment of the current and starting time settings, such relay or release can be used to detect starts requiring longer than specified times.
3.2.10
jam relay or release
electronic overload relay or release which operates in the case of overload and also when the current has increased above a predetermined value for a specific period of time during operation in accordance with specified requirements
Note 1: A jam is a high overload occurring after the completion of starting which causes the current to reach the locked rotor current value of the motor being controlled.
3.2.11
inhibit time
time-delay period during which the tripping function of the relay is inhibited (may be adjustable)
[SOURCE: GB/T 14048.4-2020, 3.3.29]
3.3 Terms and definitions concerning characteristic quantities
3.3.1
continuity of service
capability to return into service after occurrence of an over-current fault in the circuit under control at all current up to the rated service short-circuit breaking capacity I CS of the control and protective switching device
3.3.2
holding power
power needed to maintain the operation of the electromagnet
[SOURCE: GB/T 14048.4-2020, 3.2.9, modified.]
3.3.3
pick-up power
power needed to operate the device from the de-energized state
[SOURCE: GB/T 14048.4-2020, 3.2.10, modified.]
3.3.4
O
breaking operation by the device under short-circuit current
3.3.5
CO
making operation under short-circuit current followed, after the appropriate opening time, by a breaking operation
1范围
本文件适用于连接至主触头电路的额定电压不超过交流1000V或直流1500V电路中的控制与保护开关电器(设备)CPS)。
本文件适用于下述控制与保护开关电器(设备)(CPS):为电路和电动机负载提供保护和控制功能;
控制功能由非手动操作实现:
能在过电流故障后连续运行;
能具有附加功能,例如隔离或通信功能。
本文件不适用于:
--由IEC60947-5-1规定的辅助触头:
用于变频驱动器输出端的CPS:
注:对用于变频驱动器输出端的CPS的附加要求正在考中。
-1EC60079(所有部分)规定的在爆炸性环境中使用产品的额外措施:
IECTR63201规定的嵌人式软件设计规则:
--IECTS63208规定的网络安全，
本文件的目的是规定:
-CPS的特性;
在操作性能、介电性能、外壳防护等级(当带有外壳时)以及结构(针对电击防护、火灾防护和机械伤害防护)等方面CPS需要满足的条件;
用来验证满足这些条件的试验及所采用的试验方法:标识在产品上的信息或由制造商提供的资料。
2规范性引用文件
下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中,注目期的引用文件,仅该日期对应的版本适用于本文件;不注日期的引用文件,其最新版本(包括所有的修改单)适用于本文件。
GB/T 755-2019旋转电机定额和性能(IEC60034-1:2017,IDT)
GB/T 17045-2020电击防护装置和设备的通用部分(IEC61140:2016,IDT)
GB/T 19334-2021低压开关设备和控制设备的尺寸在开关设备和控制设备及其附件中作机械支承的标准安装轨(IEC60715:2017.IDT)
ISO 3864-2图形符号安全和安全标志第2部分:产品安全标签的设计原则(Graphicalsymbols-Safety colours and safety signs Part 2;Design principles for produet safety labels)
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3 术语和定义
3.1 概述
IEC60947-1:2020界定的以及下列术语、定义、符号和缩略语适用于本文件。ISO和IEC的术语数据库通过下述网址访问:
EC:hitp://www.eleetropedia.org
1S0:http:www.iso.org/obp
3.2 有关控制与保护开关电器(CPS)
3.2.1
控制与保护开关电器(设备)controland protective switching device:CPS具有控制功能的机械开关电器,其控制功能由非手动操作实现,带或不带就地人力操作装置。其能够:
接通、承载和分断正常条件下的电流;
接通、在规定时间内承载过载条件下的电流:
分断规定的非正常条件下的电流,如短路电流:
在短路条件下连续运行。
注1:定义中“其控制功能由非手动操作实现"指设备用一个或多个外部能源控制并保持在工作位置上。
注2:CPS可能是也可能不是由单一的电器组成,但总被认为是一个整体(或单元)，配合可能是内在固有的,也可
能是遵照制造商的规定经正确选取脱扣器而获得的。
3.2.2
直接型CPS direet-on-line CPS
将线电压直接加到电动机接线端子上的CPS。
3.2.3
可逆型CPS reversing CPs
用于起动电动机。在电动机非运行状态下,反接电动机先前电路接线使其反向运行的CPS注:电动机运行状态下反接电动机接线的应用称为反接制动与反向。
3.2.4
电子控制电磁铁eleetronically controlled eleetromagnet
线圈由带有有源电子元件的电路激励的电磁铁。
[来源:GB/T 14048.4-2020.3.2.8]
3.2.5
专用接线配件dedicated wiring aceessory
专门用于规定的开关设备或控制设备的预制接线系统，
注1:专用接线配件可以内置于开关设备或控制设备,或单独提供
注2:连接排是专用接线配件的典型示例。
来源:GB/T14048.4-2020,3.3.32
3.2.6
断相检测继电器或脱扣器phase-loss sensitive relay or release
(电机保护)按规定的要求,在断相时动作的保护电动机用的多极继电器或脱扣器
3.2.7
欠电流继电器或脱扣器under-current relay or release
当通过继电器或脱扣器的电流低于整定值时自动动作的继电器或脱扣器。
3.2.8
欠电压继电器或脱扣器under-voltage relay or release
当施加于继电器或脱扣器的电压低于整定值时自动动作的继电器或脱扣器。
3.2.9
堵转继电器或脱扣器stallrelay or release
根据相关要求,起动过程中如果电流在规定时间内没有减小到预定值以下,或当继电器或脱扣器接收到的输入信号表明电动机在规定时间过后没有旋转,在上述任何一种情况下均会动作的电子式过载继电器或脱扣器。
注1:堵转指的是转子在起动过程中被镇定。
注2:通过适当调整电流和起动时间,这种维电器或脱扣器能用于检测起动超时
3.2.10
阻塞继电器或脱扣器jamrelayorrelease
根据相关要求,如果发生过载或运行过程中电流超过规定值达到一定时间,在上述任何一种情况下均会动作的电子式过载继电器或脱扣器。
注:阻塞指的是起动完成以后发生了很大的过载,使电流达到了被控电动机的转子堵转电流。3.2.11
禁止保护时间inhibit time
继电器的保护动作被限制的一段延时时间(可以调节)。
来源:GB/T 14048.4-2020,3.3.29
3.3有关特性量
3.3.1
连续运行continuity of service
<控制和保护开关电器>在受控电路发生过电流故障(包括CPS的额定运行短路分断能力I及以下的所有电流)后恢复运行的能力。
3.3.2
吸持功率holding power
维持电磁铁运行所需的功率，
来源:GB/T14048.4-2020,3.2.9,有修改
3.3.3
吸合功率pick-up power
使设备从断电状态动作至通电状态所需的功率，
来源:GB/T14048.4-2020.3.2.10,有修改
3.3.4
分断操作
O
(操作)短路电流下设备的分断动作
3.3.5
闭合-分断操作
CO
(操作)在短路情况下接通操作后经一适当的时间间隔紧接着一次分断操作。
