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
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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范圍
本文件適用于連接至主觸頭電路的額定電壓不超過交流1000V或直流1500V電路中的控制與保護開關電器(設備)CPS)。
本文件適用于下述控制與保護開關電器(設備)(CPS):為電路和電動機負載提供保護和控制功能;
控制功能由非手動操作實現:
能在過電流故障后連續運行;
能具有附加功能,例如隔離或通信功能。
本文件不適用于:
--由IEC60947-5-1規定的輔助觸頭:
用于變頻驅動器輸出端的CPS:
注:對用于變頻驅動器輸出端的CPS的附加要求正在考中。
-1EC60079(所有部分)規定的在爆炸性環境中使用產品的額外措施:
IECTR63201規定的嵌人式軟件設計規則:
--IECTS63208規定的網絡安全，
本文件的目的是規定:
-CPS的特性;
在操作性能、介電性能、外殼防護等級(當帶有外殼時)以及結構(針對電擊防護、火災防護和機械傷害防護)等方面CPS需要滿足的條件;
用來驗證滿足這些條件的試驗及所采用的試驗方法:標識在產品上的信息或由制造商提供的資料。
2規范性引用文件
下列文件中的內容通過文中的規范性引用而構成本文件必不可少的條款。其中,注目期的引用文件,僅該日期對應的版本適用于本文件;不注日期的引用文件,其最新版本(包括所有的修改單)適用于本文件。
GB/T 755-2019旋轉電機定額和性能(IEC60034-1:2017,IDT)
GB/T 17045-2020電擊防護裝置和設備的通用部分(IEC61140:2016,IDT)
GB/T 19334-2021低壓開關設備和控制設備的尺寸在開關設備和控制設備及其附件中作機械支承的標準安裝軌(IEC60715:2017.IDT)
ISO 3864-2圖形符號安全和安全標志第2部分:產品安全標簽的設計原則(Graphicalsymbols-Safety colours and safety signs Part 2;Design principles for produet safety labels)
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3 術語和定義
3.1 概述
IEC60947-1:2020界定的以及下列術語、定義、符號和縮略語適用于本文件。ISO和IEC的術語數據庫通過下述網址訪問:
EC:hitp://www.eleetropedia.org
1S0:http:www.iso.org/obp
3.2 有關控制與保護開關電器(CPS)
3.2.1
控制與保護開關電器(設備)controland protective switching device:CPS具有控制功能的機械開關電器,其控制功能由非手動操作實現,帶或不帶就地人力操作裝置。其能夠:
接通、承載和分斷正常條件下的電流;
接通、在規定時間內承載過載條件下的電流:
分斷規定的非正常條件下的電流,如短路電流:
在短路條件下連續運行。
注1:定義中“其控制功能由非手動操作實現"指設備用一個或多個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單一的電器組成,但總被認為是一個整體(或單元)，配合可能是內在固有的,也可
能是遵照制造商的規定經正確選取脫扣器而獲得的。
3.2.2
直接型CPS direet-on-line CPS
將線電壓直接加到電動機接線端子上的CPS。
3.2.3
可逆型CPS reversing CPs
用于起動電動機。在電動機非運行狀態下,反接電動機先前電路接線使其反向運行的CPS注:電動機運行狀態下反接電動機接線的應用稱為反接制動與反向。
3.2.4
電子控制電磁鐵eleetronically controlled eleetromagnet
線圈由帶有有源電子元件的電路激勵的電磁鐵。
[來源:GB/T 14048.4-2020.3.2.8]
3.2.5
專用接線配件dedicated wiring aceessory
專門用于規定的開關設備或控制設備的預制接線系統，
注1:專用接線配件可以內置于開關設備或控制設備,或單獨提供
注2:連接排是專用接線配件的典型示例。
來源:GB/T14048.4-2020,3.3.32
3.2.6
斷相檢測繼電器或脫扣器phase-loss sensitive relay or release
(電機保護)按規定的要求,在斷相時動作的保護電動機用的多極繼電器或脫扣器
3.2.7
欠電流繼電器或脫扣器under-current relay or release
當通過繼電器或脫扣器的電流低于整定值時自動動作的繼電器或脫扣器。
3.2.8
欠電壓繼電器或脫扣器under-voltage relay or release
當施加于繼電器或脫扣器的電壓低于整定值時自動動作的繼電器或脫扣器。
3.2.9
堵轉繼電器或脫扣器stallrelay or release
根據相關要求,起動過程中如果電流在規定時間內沒有減小到預定值以下,或當繼電器或脫扣器接收到的輸入信號表明電動機在規定時間過后沒有旋轉,在上述任何一種情況下均會動作的電子式過載繼電器或脫扣器。
注1:堵轉指的是轉子在起動過程中被鎮定。
注2:通過適當調整電流和起動時間,這種維電器或脫扣器能用于檢測起動超時
3.2.10
阻塞繼電器或脫扣器jamrelayorrelease
根據相關要求,如果發生過載或運行過程中電流超過規定值達到一定時間,在上述任何一種情況下均會動作的電子式過載繼電器或脫扣器。
注:阻塞指的是起動完成以后發生了很大的過載,使電流達到了被控電動機的轉子堵轉電流。3.2.11
禁止保護時間inhibit time
繼電器的保護動作被限制的一段延時時間(可以調節)。
來源:GB/T 14048.4-2020,3.3.29
3.3有關特性量
3.3.1
連續運行continuity of service
<控制和保護開關電器>在受控電路發生過電流故障(包括CPS的額定運行短路分斷能力I及以下的所有電流)后恢復運行的能力。
3.3.2
吸持功率holding power
維持電磁鐵運行所需的功率，
來源:GB/T14048.4-2020,3.2.9,有修改
3.3.3
吸合功率pick-up power
使設備從斷電狀態動作至通電狀態所需的功率，
來源:GB/T14048.4-2020.3.2.10,有修改
3.3.4
分斷操作
O
(操作)短路電流下設備的分斷動作
3.3.5
閉合-分斷操作
CO
(操作)在短路情況下接通操作后經一適當的時間間隔緊接著一次分斷操作。
