Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/Z 6829-2008 General Requirements for Residual Current Operated Protective Devices; the following technical changes have been made with respect to GB/Z 6829-2008 (the previous edition):
——The paragraph "any standard for accessories, devices or equipment capable of completing only one or two of the above-mentioned three functions or failing to fully comply with all parts of this standard cannot be referred to as RCD standard, …" is added in the scope (see Chapter 1);
——Types of residual current devices type F are increased (see 4.7);
——Characteristic description for RCD type F is added (see 5.2.9.3);
——The characteristic description for RCD type B is modified (see 5.2.9.4; 5.2.9.3 of Edition 2008);
——Marking of RCD type F is added and that of RCD type B is modified (see Chapter 6);
——"Alternate current or pulsating direct residual current superimposition smooth direct current" is modified and the requirements for RCD type F and RCD type B are given respectively (see 8.3.1.3 and 8.3.1.4; 8.3.1.3 and 8.3.1.4 of Edition 2008);
——The requirements for combination frequency residual current are modified, and component values of different frequencies of test current and initial value (IΔ) for correct operation verification at the time the residual current stably increases in Table 11 as well as the range of action current of recombination residual current in Table 12 are added (see 8.3.1.5; 8.3.1.5 of Edition 2008);
——Two poles in the column of pole number corresponding smooth direct current are added in Table 14 (See Table 14);
——The possible load current and fault current in Annex B are modified (13 waveforms in the latest draft of IEC 60755 are adopted) (see Annex B; Annex B of Edition 2008);
——Annex C "Supplementary Requirements for Auto-reclosing RCD" is deleted.
This standard is modified in relation to IEC/TR 60755: 2008 General Requirements for Residual Current Operated Protective Devices.
Technical differences exist between this standard and IEC/TR 60755: 2008; these differences are marked with perpendicular single line (|) in the outside page margin of the provisions concerned, and the technical differences and their causes are as follows:
——For normative references, this standard adjusts technical differences so as to adapt to technical conditions in China, which is reflected in Chapter 2 "Normative References", and the specific adjustment is as follows:
? GB/T 156-2007 modified in relation to international standard is used to replace IEC 60038 (see 5.3);
? GB/T 16895.21-2011 identical to international standard is used to replace IEC 60364-4-41 (see 5.3);
? GB/T 16895.4-1997 identical to international standard is used to replace IEC 60364-5-53 (see Chapter 1);
? GB/T 13140.1-2008 identical to international standard is used to replace IEC 60998-1 (see Chapter 3 and 8.5);
? GB/T 17045-2008 identical to international standard is used to settle IEC 61140 (see Chapter 1).
——IEC/TR 60755: 2008 may be used as guidance for residual current devices with rated voltage not exceeding 1 000V a.c. while this standard for residual current devices with rated voltage not exceeding 1 200V a.c.;
——The paragraph "any standard for accessories, devices or equipment capable of completing only one or two of the above-mentioned three functions or failing to fully comply with all parts of this standard cannot be referred to as RCD standard, …" is added in the scope (see Chapter 1);
——The classification by actuation mode as well as the requirements "according to relevant product standards" specified in IEC/TR 60755: 2008 are added (see 4.1.1);
——Types of residual current devices type F are increased (see 4.7);
——The classification of delayed type is further detailed [see 4.9 b)];
——Classification by whether there is auto-reclosing is added (see 4.11);
——The characteristic description for RCD type F is added (see 5.2.9.3);
——Grades 220 V and 380 V are added for rated voltage priority value and Grade 800 A is added for rated current priority value (see 5.4.1 and 5.4.2);
——The requirements "time-delay type is only applicable to residual current devices with IΔn greater than 0.03 A" is explicitly specified in 5.4.12.2 of this standard, thus corresponding modifications are made to other relevant parts;
——Types, requirements and markings of RCD type F are added and the requirements and markings of Type B RCD are modified (see Chapter 6);
——"Alternate current or pulsating direct residual current superimposition smooth direct current" is modified and the requirements for RCD type F and RCD type B are given respectively (see 8.3.1.3 and 8.3.1.4);
——The requirements for combination frequency residual current are modified, and component values of different frequencies of test current and initial value (IΔ) for correct operation verification at the time the residual current stably increases in Table 11 as well as the range of action current of recombination residual current in Table 12 are added (see 8.3.1.5);
——The additional requirements for RCD functionally dependent on supply voltage are added in this standard; it is also specified that residual current devices for household and similar purposes with IΔn≤0.03A shall be capable of operating automatically in case of the residual current greater than or equal to the rated residual operating current while the supply voltage drops to 50V (phase-to-earth voltage) (see 8.3.3);
——Annex B "Possible Load Current and Fault Currents" is modified (see Annex B).
This standard was proposed by China Electrical Equipment Industry Association.
This standard is under the jurisdiction of SAC/TC 189 National Technical Committee on Low-voltage Apparatus of Standardization Administration of China.
The previous editions of this standard are as follows:
——GB 6829-1986, GB 6829-1995 and GB/Z 6829-2008.
Introduction
Residual current devices are primarily intended to give protection against the risk of dangerous, and possibly lethal, electric shocks and to provide protection against fire hazards due to a persistent earth fault current.
This standard specifies the operational characteristics for these devices; details of how they should be installed to provide the desired level of protection are specified in the various parts of GB 16895.
This standard is intended for use by technical committees and relevant organizations in the preparation of standards for residual current devices. It is not intended to be used as a stand-alone standard, for example, for certification.
It has been prepared in accordance with its pilot function for residual current devices.
There are two basic conditions of protection against the risk of electric shock: fault protection (indirect contact) and basic protection (direct contact).
Fault protection implies that the device is used to prevent dangerous voltages persisting on accessible installation metalwork, which are earthed but become live under earth fault conditions.
Under such conditions, the risk arises not from the user making direct contact with a live conductive part but from making contact with earthed metalwork, which itself is in contact with a live conductive part.
The primary or basic function of residual current devices is to give fault protection, but, with devices of adequate sensitivity (i.e., units having operating residual currents not exceeding 30 mA), there is the additional benefit that, should other methods of protection fail, the device will give a high degree of protection to a user making direct contact with a live conductive part.
The operating characteristics given in this standard are therefore based on requirements, which themselves are based on the information contained in GB/T 13870 Effects of Current on Human Beings and Livestock.
These devices also provide protection against the risk of fire resulting from earth fault currents which can persist for lengthy periods without operating the overcurrent protective device.
General Requirements for Residual Current Operated Protective Devices
1 Scope
The requirements of this standard apply to residual current operated protective devices (hereinafter referred to as “residual current devices” (RCD)) for rated voltages not exceeding 440 V a.c., intended primarily for protection against shock hazard. They are intended to be used by technical committees and relevant organizations when drafting product standards and apply only if they are incorporated or are referred to in the relevant standards. This standard is not intended to be used as a stand-alone standard, for example, for certification.
Note 1: This standard may also be used as a guide for residual current devices of rated voltages up to 1 200 V, a.c., the performance of which shall be determined through negotiation between the manufacturer and the user when the standard for relevant products are prepared.
It applies to
——a single device which detects a residual current (see 3.3.2), compares it to a reference value (see 3.3.3) and opens the protected circuit when the residual current exceeds this reference value (see 3.3.4);
——an association of devices, each one of them performing separately one or two of the above-mentioned functions, but acting together in order to accomplish all three functions. Particular requirements may be necessary for devices intended for accomplishing only one or two of the above three functions.
Any standard for accessories, devices or equipment capable of completing only one or two of the above-mentioned three functions or failing to fully comply with all parts of this standard cannot be referred to as RCD standard, or refer to "RCD", either abbreviation or full name "residual current device". "RCD" shall not be marked on products of such accessories, devices or equipment or in their technical documents.
This standard applies for conditions as stated in Chapter 7. For other conditions, additional requirements may be necessary.
Residual current devices are intended to protect persons and livestock against harmful effects of electric shock due to contact with exposed conductive parts by automatic disconnection of supply in accordance with GB/T 17045-2008 and GB/T 16895.21-2011.
Note 2: In this context “harmful effects” include the risk of occurrence of heart fibrillation.
In accordance with GB/T 16895.4-1997, residual current devices with a rated residual operating current not exceeding 300 mA may also be used to provide protection against fire hazards due to a persistent earth fault current.
In accordance with GB/T 16895.21-2011, residual current devices with a rated residual operating current not exceeding 30 mA may also be used for additional protection in case of failure of the basic protective provisions or carelessness of the user of the installation or equipment.
For residual current devices performing additional functions, this standard applies together with the relevant standard covering the additional functions; for example, when residual current devices incorporate a circuit-breaker it should comply with the relevant circuit-breaker standard.
Supplementary or particular requirements may be necessary, for example, for
——residual current devices intended for use by uninstructed persons;
——socket-outlets, plugs, adapters and couplers incorporating residual current devices.
This standard states
——the definitions and terms used for residual current devices (Chapter 3) ;
——the classification of residual current devices (Chapter 4);
——the characteristics of residual current devices (Chapter 5);
——the preferred values of the operating and influencing quantities (5.4);
——the marking and information to be provided for residual current devices (Chapter 6);
——the standard conditions for installation and operation in service (Chapter 7);
——the requirements for construction and operation (Chapter 8);
——the list of minimum requirements to be tested (Chapter 9).
Note 3: Devices having a residual current function for specific purposes other than those mentioned above (for example, motor protection) are not covered by this standard.
2 Normative References
The following referenced documents are indispensable for the application 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 156-2007 Standard Voltages (IEC 60038: 2002, MOD)
GB/T 2900.8-2009 International Electrotechnical Vocabulary – Insulators (IEC 60050-471: 2007, IDT)
GB/T 2900.25-2008 International Electrotechnical Vocabulary – Rotating Machines (IEC 60050-411: 1996, IDT)
GB/T 2900.35-2008 International Electrotechnical Vocabulary – Electrical Apparatus for Explosive Atmospheres (IEC 60050-426: 2008, IDT)
GB/T 2900.70-2008 International Electrotechnical Vocabulary – Electrical Accessories (IEC 60050-442: 1998, IDT)
GB/T 13140.1-2008 Connecting Devices for Low-voltage Circuits for Household and Similar Purposes – Part 1: General Requirements (IEC 60998-1: 2002, IDT)
GB/T 16895.4-1997 Electrical Installations of Buildings – Part 5: Selection and Erection of Electrical Equipment – Chapter 53: Switching and Control (IEC 60364-5-53: 1994, IDT)
GB/T 16895.21-2011 Low-voltage Electrical Installations – Part 4-41: Protection for Safety – Protection Against Electric Shock (IEC 60364-4-41: 2005, IDT)
GB/T 17045-2008 Protection against Electric Shock – Common Aspects for Installation and Equipment (IEC 61140: 2001, IDT)
IEC 60050-441: 1984 International Electrotechnical Vocabulary - Part 441: Switchgear, Controlgear and Fuses
3 Terms and Definitions
For the purposes of this document, definitions given in GB/T 2900.8-2009, GB/T 2900.25-2008, GB/T 2900.35-2008, GB/T 2900.70-2008 and IEC 60050-441: 1984, as well as the following, apply.
3.1 Definitions relating to currents flowing from live parts to earth
3.1.1
earth fault current
current flowing to earth due to an insulation fault
3.1.2
earth leakage current
current flowing from the live parts of the installation to earth in the absence of an insulation fault
3.1.3
pulsating direct current
current of pulsating wave form which assumes, in each period of the rated power frequency, the value 0 or a value not exceeding 0.006 A d.c. during one single interval of time, expressed in angular measure, of at least 150°
3.1.4
current delay angle
α
time, expressed in angular measure, by which the starting instant of the current conduction is delayed by phase control
3.1.5
smooth direct current
direct current which is ripple-free
Note: A current is considered to be ripple-free when the coefficient of ripple is below 10 %.
3.2 Definitions relating to the energization of a residual current device
3.2.1
residual current
IΔ
vector sum of the instantaneous values of the current flowing in the main circuit of the residual current device (expressed as r.m.s. value)
3.2.2
residual operating current
value of residual current which causes the residual current device to operate under specified conditions
3.2.3
residual non-operating current
value of residual current at which and below which the residual current device does not operate under specified conditions
3.3 Definitions relating to the operation and to the functions of the residual current device
3.3.1
residual current device; RCD
mechanical switching device or association of devices designed to make, carry and break currents under normal service conditions and to cause the opening of the contacts when the residual current attains a given value under specified conditions
3.3.2
detection
function consisting in sensing the presence of a residual current
3.3.3
evaluation
function consisting in giving to the residual current device the possibility to operate, when the detected residual current exceeds a specified reference value
3.3.4
interruption
function consisting in bringing automatically the main contacts of the residual current device from the closed position into the open position, thereby interrupting the current(s) flowing through them
3.3.5
switching device
device designed to make or to break the current in one or more electric circuits
3.3.6
trip-free mechanism of a residual current device
mechanism, the moving contacts of which return to and remain in the open position when the opening operation is initiated after the initiation of the closing operation, even if the closing command is maintained
Note: To ensure proper breaking of the current which may have been established, it may be necessary that the contacts momentarily reach the closed position.
3.3.7
residual current device without integral overcurrent protection
residual current device not designed to perform the functions of protection against overloads and/or short circuits
3.3.8
residual current device with integral overcurrent protection
residual current device designed to perform the functions of protection against overloads and/or short circuits
Note: This definition includes residual current devices intended to be coupled to a circuit breaker (r.c. units, see 3.3.9)
3.3.9
r.c.unit
device performing simultaneously the functions of detection of the residual current and of comparison of the value of this current with the residual operating value and incorporating the means of operating the tripping mechanism of a circuit-breaker with which it is designed to be assembled or associated
3.3.10
break time of a residual current device
time which elapses between the instant the residual operating current is attained and the instant of arc extinction in all poles
3.3.11
limiting non-actuating time
maximum time during which the residual operating current can be applied to the residual current device without causing it to operate
3.3.12
time-delay residual current device
residual current device specially designed to attain a predetermined value of limiting non-actuating time, corresponding to a given value of residual current
3.3.13
reset residual current device
residual current device which should be intentionally reset prior to reclosing by a means different from the operation means to be able to be reclosed and to operate again
3.3.14
test device
device incorporated in the residual current device simulating the residual current conditions for the operation of the residual current device under specified conditions
3.4 Definitions relating to values and ranges of energizing quantities
3.4.1
non-operating overcurrents
3.4.1.1
limiting value of the non-operating over-current in the case of a single-phase load
maximum value of a single-phase overcurrent which, in the absence of a residual current, can flow through a residual current device (whatever the number of poles) without causing it to operate
Notes:
1 In the case of an overcurrent in the main circuit, unwanted tripping may occur in the absence of residual current, due to asymmetry existing in the detecting device itself.
2 In the case of a residual current device with integral overcurrent protection, the limiting value of the non-operating current may be determined by the overcurrent protection means.
3.4.1.2
limiting value of the non-operating current in the case of a balanced load
maximum value of the current which, in the absence of a residual current, can flow through a residual current device with a balanced load (whatever the number of poles) without causing it to operate
Notes:
1 In the case of an overcurrent in the main circuit, unwanted tripping may occur in the absence of residual current, due to asymmetry existing in the detecting device itself.
2 In the case of a residual current device with integral overcurrent protection, the limiting value of the non-operating current may be determined by the overcurrent protection means.
3.4.2
residual short-circuit withstand current
maximum value of the residual current for which the operation of the residual current device is assured under specified conditions and above which that device may undergo irreversible alterations
3.4.3
limiting thermal value of the short-time current
highest value of current (r.m.s.) which the device is capable of carrying for a specified short period and under specified conditions without undergoing, by heating effect, permanent deterioration of its characteristics
3.4.4
prospective current
current that would flow in the circuit, if each main current path of the residual current device and of the overcurrent protective device (if any) were replaced by a conductor of negligible impedance
Note: The prospective current may be qualified in the same manner as an actual current, for example, prospective breaking current, prospective peak current, prospective residual current, etc.
3.4.5
making capacity
value of the a.c. component of a prospective current that a residual current device is capable of making at a stated voltage under prescribed conditions of use and behaviour
3.4.6
breaking capacity
value of the a.c. component of a prospective current that a residual current device is capable of breaking at a stated voltage under prescribed conditions of use and behaviour
3.4.7
residual making and breaking capacity
value of the a.c. component of a residual prospective current which a residual current device can make, carry for its opening time and break under specified conditions of use and behaviour
3.4.8
conditional short-circuit current
value of the a.c. component of a prospective current, which a residual current device without integral short-circuit protection, but protected by a suitable short-circuit protective device (hereafter referred to as an SCPD) in series, can withstand under specified conditions of use and behaviour
3.4.9
conditional residual short-circuit current
value of the a.c. component of a residual prospective current which a residual current device, without integral short-circuit protection but protected by a suitable SCPD in series, can withstand under specified conditions of use and behaviour
3.4.10
I2t (Joule integral)
integral of the square of the current, over a given time interval (t0, t1):
3.4.11
recovery voltage
voltage which appears across the supply terminals of the residual current device after the breaking of the current
Note: This voltage may be considered as comprising two successive intervals of time, one during which a transient voltage exists, followed by a second one during which power-frequency recovery voltage alone exists.
Foreword i
Introduction iv
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification
5 Characteristics of Residual Current Devices
6 Marking and Other Product Information
7 Standard Conditions for Operation in Service and for Installation
8 Conditions for Construction and Operation
9 Guidance for Type Tests
Annex A (Informative) Recommended Diagram for Short-circuit Tests
Annex B (Informative) Possible Load and Fault Currents
Bibliography
Figure A.1 Diagram for All the Short-circuit Tests
Figure A.2 Detail of Impedance Z or Z
Figure B.1 Possible Load and Fault Currents according to the Different Electronic Circuits
Table 1 Standard Values of Maximum Break Time of Non-time-delay Type RCDs for a.c. Residual Current
Table 2 Standard Values of Maximum Break Time of Non-time-delay Type RCDs for Half-wave Pulsating d.c. Residual Current
Table 3 Standard Values of Maximum Break Time of Non-time-delay Type RCDs for Residual Direct Currents Which Result From Rectifying Circuits and/or Smooth d.c. Residual Current
Table 4 Acceptable Alternative Standard Values of Maximum Break Times for RCD with a Rated Residual Current of 6mA and Non-time-delay Type Intended to Be Used in Bi-phase System 120 V with Middle Point
Table 5 Standard Values of Break Time for a.c. Residual Current for Time-delay Type Residual Current Devices
Table 6 Standard Values of Break Time for Pulsating d.c. Residual Current for Time-delay Type Residual Current Devices
Table 7 Standard Values of Break Time for Smooth d.c. Residual Current for Time-delay Type Residual Current Devices
Table 8 Values of Influencing Quantities
Table 9 Tripping Current Limits of Alternating Residual Current
Table 10 Tripping Current Limits of Pulsating d.c. Residual Current
Table 11 Component Value of Different Frequencies in Test Current and Initial Value (IΔ) of Recombination Residual Current for Correct Operation Verification When Residual Current Is Stably Increased
Table 12 Range of Operating Current of Recombination Residual Current
Table 13 Tripping Current Range of Type B RCD at Frequencies Different from Rated Frequency Preferred Value 50Hz/60Hz
Table 14 Tripping Current Limits of Smooth Direct Residual Current
Table 15 List of Minimum Requirements to Be Checked or Tested
剩余電流動作保護電器(RCD)的一般要求
1 范圍
本標準適用于額定電壓不超過交流440 V,主要用于電擊危險保護的剩余電流動作保護電器(以下稱為剩余電流保護電器,簡稱RCD)。本標準的技術要求作為技術委員會和有關單位起草產品標準時使用,并且只有在與相關標準組合時或在相關標準中引用時才適用。本標準不作為一個獨立標準使用,例如單獨作為認證標準用。
注1:本標準也可用來指導額定電壓不超過交流1 200 V的剩余電流保護電器,在起草相關產品標準時其性能要求由制造廠和用戶協商確定。
本標準適用于:
——檢測剩余電流(見3.3.2);將其同基準值(見3.3.3)相比較;以及當剩余電流超過該基準值斷開被保護電路(見3.3.4)的單一電器。
——組合電器,其每個部分分別執行上述一個或兩個功能,但是一起作用以完成所有三個功能。對預期僅完成上述三個功能中一個或兩個功能的電器,可能需要特殊的技術要求。
任何只能完成上述三個功能中一個或兩個,或不能完全符合本標準的所有部分的附件、裝置或設備的標準不能稱為RCD標準,或引用“RCD”,無論是縮寫或全稱“剩余電流裝置”。這些附件、裝置或設備在其產品上或技術文件中均不能標志“RCD”。
本標準適用于第7章規定的條件。對于其他條件,可能需要補充技術要求。
根據GB/T 17045—2008和GB/T 16895.21—2011,剩余電流保護電器通過自動切斷電源來防止人和牲畜由于觸及外露的導電部件而產生的電擊的有害影響。
注2:上述“有害影響”包括發生心臟纖維性顫動的危險。
根據GB/T 16895.4—1997,額定剩余動作電流不超過300 mA的剩余電流保護電器也可以對持續接地故障電流引起的火災危險提供防護。
根據GB/T 16895.21—2011,額定剩余動作電流不超過30 mA的剩余電流保護電器也可以在基本保護措施失效或者電氣裝置或設備使用者疏忽的情況下,提供附加保護。
對于能夠執行附加功能的剩余電流保護電器,本標準與包含附加功能的相關標準一起適用,例如:當剩余電流保護電器與斷路器組合時,應符合相應的斷路器標準。
對下列情況可能需要補充的或者特定的技術要求,例如:
——由非專業人員使用的剩余電流保護電器;
——與剩余電流保護電器組合的插座、插頭、適配器和連接器。
本標準規定:
——剩余電流保護電器使用的術語和定義(第3章);
——剩余電流保護電器的分類(第4章);
——剩余電流保護電器的特性(第5章);
——動作值和影響量的優選值(5.4);
——剩余電流保護電器的標志和信息(第6章);
——使用時安裝和工作的標準條件(第7章);
——結構和操作的要求(第8章);
——最少試驗要求明細表(第9章)。
注3:除了上述提及的以外,用于特定場合(例如:電動機保護)的具有剩余電流功能的電器不包括在本標準內。
2規范性引用文件
下列文件對于本文件的應用是必不可少的。凡是注日期的引用文件,僅注日期的版本適用于本文件。凡是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 156—2007 標準電壓(IEC 60038:2002,MOD)
GB/T 2900.8—2009 電工術語 絕緣子(IEC 60050-471:2007,IDT)
GB/T 2900.25—2008 電工術語 旋轉電機(IEC 60050-411:1996,IDT)
GB/T 2900.35—2008 電工術語 爆炸性環境用設備(IEC 60050-426:2008,IDT)
GB/T 2900.70—2008 電工術語 電器附件(IEC 60050-442:1998,IDT)
GB/T 13140.1—2008家用和類似用途低壓電路用的連接器件 第1部分:通用要求(IEC 60998-1:2002,IDT)
GB/T 16895.4—1997 建筑物電氣裝置 第5部分:電氣設備的選擇和安裝 第53章:開關設備和控制設備(IEC 60364-5-53:1994,IDT)
GB/T 16895.21—2011 建筑物電氣裝置 第4-41部分:安全防護 電擊防護(IEC 60364-4-41:2005,IDT)
GB/T 17045—2008 電擊防護 裝置和設備的通用部分(IEC 61140:2001,IDT)
IEC 60050-441:1984國際電工詞匯 第441部分:開關設備、控制設備和熔斷器(International Electrotechnical Vocabulary—Part 441:Switchgear,controlgear and fuses)
3術語和定義
GB/T 2900.8—2009、GB/T 2900.25—2008、GB/T 2900.35—2008、GB/T 2900.70—2008和IEC 60050-441:1984界定的以及下列術語和定義適用于本文件。
3.1 關于從帶電部件流入大地電流的定義
3.1.1
接地故障電流earth fault current
由于絕緣故障而流入大地的電流。
3.1.2
對地泄漏電流earth leakage current
無絕緣故障,從設備的帶電部件流入大地的電流。
3.1.3
脈動直流電流pulsating direct current
在每一個額定工頻周期內,用電角度表示至少為150°的一段時間間隔內電流值為0或不超過直流0.006 A的脈動波形電流。
3.1.4
電流滯后角current delay angle
α
通過相位控制,使電流導通的起始時刻滯后的用電角度表示的時間。
3.1.5
平滑直流電流smooth direct current
沒有波紋的直流電流。
注:當波紋系數小于10%時,可以認為電流沒有波紋。
3.2關于剩余電流保護電器激勵的定義
3.2.1
剩余電流 residual current
IΔ
流過剩余電流保護電器主回路的電流瞬時值的矢量和(用有效值表示)。
3.2.2
剩余動作電流 residual operating current
使剩余電流保護電器在規定條件下動作的剩余電流值。
3.2.3
剩余不動作電流 residual non-operating current
在該電流或低于該電流時,剩余電流保護電器在規定條件下不動作的剩余電流值。
3.3 關于剩余電流保護電器動作和功能的定義
3.3.1
剩余電流保護電器residual current device;RCD
在正常運行條件下能接通、承載和分斷電流,以及在規定條件下當剩余電流達到規定值時能使觸頭斷開的機械開關電器或組合電器。
3.3.2
檢測detection
感知剩余電流存在的功能。
3.3.3
判別 evaluation
當檢測的剩余電流超過規定的基準值時,使剩余電流保護電器可能動作的功能。
3.3.4
斷開 interruption
使得剩余電流保護電器的主觸頭從閉合位置轉換到斷開位置,從而切斷其流過的電流的功能。
3.3.5
開關電器switching device
用以接通和分斷一個或幾個電氣回路中電流的裝置。
3.3.6
剩余電流保護電器的自由脫扣機構trip-free mechanism of a residual current device
閉合操作開始后,若進行斷開操作時,即使保持閉合指令,其動觸頭能返回并保持在斷開位置的機構。
注:為了確保正常分斷可能已經產生的電流,可能需要使觸頭瞬時地到達閉合位置。
3.3.7
不帶過電流保護的剩余電流保護電器residual current device without integral overcurrent protection
不能用來執行過載和/或短路保護功能的剩余電流保護電器。
3.3.8
帶過電流保護的剩余電流保護電器 residual current device with integral overcurrent protection
能用來執行過載和/或短路保護功能的剩余電流保護電器。
注:本定義包括與斷路器組合的剩余電流保護電器(r.c.單元,見3.3.9)。
3.3.9
剩余電流單元(r.c.單元) r.c.unit
r.c.單元是一個能同時執行檢測剩余電流、將該電流值與剩余動作電流值相比較的功能,以及具有操作與其組裝或組合的斷路器脫扣機構的器件的裝置。
3.3.10
剩余電流保護電器的分斷時間 break time of a residual current device
從達到剩余動作電流瞬間起至所有極電弧熄滅瞬間為止所經過的時間間隔。
3.3.11
極限不驅動時間limiting non-actuating time
能對剩余電流保護電器施加一個剩余動作電流而不使其動作的最長時間。
3.3.12
延時型剩余電流保護電器time-delay residual current device
專門設計的對應于一個給定的剩余電流值,能達到一個預定的極限不驅動時間的剩余電流保護電器。
3.3.13
復位型剩余電流保護電器reset residual current device
若能重新閉合并再次操作,在重新閉合前必須用一個操作件之外的器件人為復位的剩余電流保護電器。
3.3.14
試驗裝置test device
組裝在剩余電流保護電器中的模擬剩余電流保護電器在規定條件下動作的剩余電流條件的裝置。
3.4與激勵量值和范圍有關的定義
3.4.1
不動作的過電流 non-operating overcurrents
3.4.1.1
在單相負載時不動作過電流的限值limiting value of the non-operating over-current in the case of a single-phase load
在沒有剩余電流時,能夠流過剩余電流保護電器(不論極數)而不導致其動作的最大單相過電流值。
注1:在主電路過電流的情況下,沒有剩余電流時,由于檢測器件本身存在的不對稱可能發生誤脫扣。
注2:在剩余電流保護電器帶過電流保護時,不動作電流的限值可以由過電流保護裝置來確定。
3.4.1.2
在平衡負載時不動作電流的限值limiting value of the non-operating current in the case of a bal-anced load
在沒有剩余電流時,能夠流過帶平衡負載的剩余電流保護電器(不論極數)而不導致其動作的最大電流值。
注1:在主電路過電流的情況下,沒有剩余電流時,由于檢測器件本身存存的不對稱可能發生誤脫扣。
注2:在剩余電流保護電器帶過電流保護時,不動作電流的限值可以由過電流保護裝置來確定。
3.4.2
剩余短路耐受電流 residual short-circuit withstand current
在規定的條件下能夠確保剩余電流保護電器運行的剩余電流最大值,超過該值時,該裝置可能遭受不可逆轉的變化。
3.4.3
短時電流極限發熱值limiting thermal value of the short-time current
剩余電流保護電器能夠承載一個特定的短時間,并且在規定條件不會因熱效應而使其特性產生永久性劣化的最大電流值(有效值)。
3.4.4
預期電流prospective current
當剩余電流保護電器和過電流保護裝置(如果有的話)的每個主電流回路用一個阻抗可忽略不計的導體代替時,在電路中流過的電流。
注:預期電流同樣可以看作一個實際電流,例如:預期分斷電流,預期峰值電流,預期剩余電流等。
3.4.5
接通能力 making capacity
剩余電流保護電器在規定的使用和工作條件下以及在規定的電壓下能夠接通的預期電流的交流分量值。
3.4.6
分斷能力 breaking capacity
剩余電流保護電器在規定的使用和工作條件下以及在規定的電壓下能夠分斷的預期電流的交流分量值。
3.4.7
剩余接通和分斷能力 residual making and breaking capacity
在規定的使用和工作條件下,剩余電流保護電器能夠接通、承載其斷開時間以及能夠分斷的剩余預期電流的交流分量值。
3.4.8
限制短路電流 conditional short-circuit current
本身不帶過電流保護,但用一個合適的串聯的短路保護裝置(以下簡稱SCPD)保護的剩余電流保護電器在規定的使用和工作條件下能夠承受的預期電流的交流分量值。
3.4.9
限制剩余短路電流 conditional residual short-circuit current
本身不帶過電流保護,但用一個合適的串聯的SCPD保護的剩余電流保護電器在規定的使用和工作條件下能夠承受的剩余預期電流的交流分量值。
3.4.10
I2t(焦耳積分)I2t(Joule integral) 電流的平方在給定的時間間隔(t0,t1)內的積分。
3.4.11
恢復電壓 recovery voltage
分斷電流后,在剩余電流保護電器的電源接線端子之間出現的電壓。
注:此電壓可以認為有兩個連續的時間間隔組成,第一個時間間隔出現瞬態電壓,接著的第二個時間間隔只出現工頻恢復電壓。
3.4.12
瞬態恢復電壓transient recovery voltage
在具有顯著瞬態特征的時間內的恢復電壓。
注1:根據電路和剩余電流保護電器的特性,瞬態電壓可以是振蕩的,或非振蕩的或兩者兼有。此電壓包括多相電路中性點位移的電壓。
注2:除非另外規定,三相電路中的瞬態恢復電壓是首先斷開極出現的電壓,因為該電壓通常高于其余二極斷開時出現的電壓。
3.4.13
工頻恢復電壓 power-frequency recovery voltage
在瞬態電壓現象消失后的恢復電壓。
3.5與影響量值和范圍有關的定義
3.5.1
影響量 influencing quantity
可能改變剩余電流保護電器的規定動作的任何量。
3.5.2
影響量的基準值 reference value of an influencing quantity
與制造商規定的特性有關的影響量值。
3.5.3
影響量的基準條件 reference conditions of influencing quantities
所有的影響量都是基準值。
3.5.4
影響量的范圍 range of an influencing quantity
在這個影響量值范圍內,剩余電流保護電器在規定的條件下滿足規定的技術要求。
3.5.5
影響量的極限范圍 extreme range of an influencing quantity
在這個影響量值范圍內,剩余電流保護電器僅受到自發的可逆的變化,但不必符合本標準的技術要求。
3.5.6
周圍空氣溫度ambient air temperature
在規定條件下確定的剩余電流保護電器周圍的空氣的溫度。
注:對于封閉的剩余電流保護電器,該溫度是指外殼外的空氣溫度。
3.6 操作條件
3.6.1
操作 operation
動觸頭從斷開位置到閉合位置的轉換或相反的轉換。
注:如果需要加以區分,則電氣含義上的操作(即接通和分斷)稱為開閉操作,而機械含義上的操作(即閉合和斷開)稱為機械操作。
3.6.2
閉合操作 closing operation
剩余電流保護電器從斷開位置轉換到閉合位置的操作。
3.6.3
斷開操作 opening operation
剩余電流保護電器從閉合位置轉換到斷開位置的操作。
3.6.4
操作循環operating cycle
從一個位置轉換到另一個位置再返回至起始位置的連續操作。
3.6.5
操作順序sequence of operations
具有規定時間間隔的規定的連續操作。
3.6.6
電氣間隙clearance
兩個導電部件之間在空氣中的最短距離。
注:為確定對易觸及部件的電氣間隙,絕緣外殼的易觸及表面宜視為導電的,好象該外殼能被手或GB/T 42082008的標準試指觸及的表面覆蓋一層金屬箔一樣。
3.6.7
爬電距離 creepage distance
兩個導電部件之間沿絕緣材料表面的最短距離。
注:為確定對易觸及部件的爬電距離,絕緣外殼的易觸及表面宜視為導電的,好象該外殼能被手或GB/T 4208—2008的標準試指觸及的表面覆蓋一層金屬箔一樣。
3.7試驗
3.7.1
型式試驗type test
對按某一設計制造的一個或幾個電器所進行的試驗,以表明該設計符合一定的技術要求。
3.7.2
常規試驗 routine tests
對每個正在制造的和/或制造完畢的電器進行的試驗,以確定其是否符合某些標準。
3.8
短路保護電器 short-circuit protective device;SCPD
制造商規定的應與剩余電流保護電器一起串聯安裝在電路中僅對其進行短路電流保護的電器。
4分類
正確使用本章分類剩余電流保護電器應符合安裝規程(例如:根據GB 16895系列標準)。
4.1 根據動作方式分
4.1.1 動作功能與電源電壓無關的RCD。
4.1.2動作功能與電源電壓有關的RCD。
4.1.2.1 電源電壓故障時,有延時或無延時自動動作。
4.1.2.2 電源電壓故障時不能自動動作:
a) 在電源電壓故障時不能自動動作,但發生剩余電流故障時能按預期要求動作;
b)在電源電壓故障時不能自動動作,即使發生剩余電流故障時也不能動作。
4.2根據安裝型式分
主要有以下幾項:
——固定裝設和固定接線的剩余電流保護電器;
——移動設置和/或用電纜將裝置本身連接到電源的剩余電流保護電器。
4.3根據極數和電流回路數分
主要有以下幾項:
——單極二回路剩余電流保護電器;
——二極剩余電流保護電器;
——二極三回路剩余電流保護電器;
——三極剩余電流保護電器;
——三極四回路剩余電流保護電器;
——四極剩余電流保護電器。
4.4根據過電流保護分
主要有以下幾項:
a) 不帶過電流保護的剩余電流保護電器;
b)帶過電流保護的剩余電流保護電器;
c) 僅帶過載保護的剩余電流保護電器;
d)僅帶短路保護的剩余電流保護電器。
4.5 根據調節剩余動作電流的可能性分
主要有以下幾項:
——有一個固定的額定剩余動作電流的剩余電流保護電器;
——額定剩余動作電流分級可調的剩余電流保護電器;
——額定剩余動作電流連續可調的剩余電流保護電器。
4.6根據沖擊電壓產生的浪涌電流作用下耐誤脫扣的能力分
主要有以下幾項:
——正常耐誤脫扣;
——增強耐誤脫扣。
4.7 在剩余電流含有直流分量時,剩余電流保護電器根據動作特性分
主要有以下幾項:
——AC型剩余電流保護電器;
——A型剩余電流保護電器;
——F型剩余電流保護電器;
——B型剩余電流保護電器。
4.8 根據周圍空氣溫度范圍分
主要有以下幾項:
a) 預期在-5℃~+40℃環境溫度下使用的剩余電流保護電器;
b) 預期在-25℃~+40℃環境溫度下使用的剩余電流保護電器;
c) 預期在規定的更嚴酷的條件下使用的剩余電流保護電器。
4.9根據剩余電流大于IΔn時的延時分
主要有以下幾項:
a)無延時,例如:用于一般用途;
b)有延時,例如:用于選擇性保護:
——延時不可調節;
——延時可以調節。
4.10根據結構型式分
主要有以下幾項:
——由制造商裝配成一個完整單元的剩余電流保護電器;
——在現場由斷路器和r.c.單元裝配組成的剩余電流保護電器。對這類器件的要求應在相關產品標準中規定。
注:電流檢測裝置和/或信號處理器件可與電流分斷裝置分開安裝。
4.11 根據有無自動重合閘分
主要有以下幾項:
——無自動重合閘功能的剩余電流保護電器;
——具有自動重合閘功能的剩余電流保護電器(相應的技術要求由相關產品標準規定)。
5剩余電流保護電器的特性
5.1 特性概要
剩余電流保護電器的特性應由下列項目規定(適用時):
a) 安裝型式(4.2);
b)極數和電流回路數(4.3);
c) 額定電流In(5.2.1);
d)剩余電流含有直流分量時,根據動作特性確定的剩余電流保護電器的型式(5.2.9);
e) 額定剩余動作電流IΔn(5.2.2);
f) 額定剩余不動作電流IΔno,如果與優選值不同時(5.2.3);
g)額定電壓(5.2.4);
h) 額定頻率(5.2.5);
i) 額定接通和分斷能力Im(5.2.6);
j) 額定剩余接通和分斷能力IΔm(5.2.7);
k)延時(如果適用時)(5.2.8);
l) 額定限制短路電流(5.3.2);
m)額定限制剩余短路電流IΔc(5.3.3)。
5.2所有剩余電流保護電器共同的特性
5.2.1 額定電流(In)
制造商規定的剩余電流保護電器能在適用于開關電器(見3.3.5)的相關國家標準規定的不間斷工作制下承載的電流值。
5.2.2額定剩余動作電流(IΔn)
制造商對剩余電流保護電器規定的額定頻率下正弦剩余動作電流的有效值(見3.2.2),在該電流值時剩余電流保護電器應在規定的條件下動作。
5.2.3額定剩余不動作電流(IΔno)
制造商對剩余電流保護電器規定的剩余不動作電流值(見3.2.3),在該電流值時剩余電流保護電器在規定的條件下不動作。
5.2.4額定電壓(Un)
由制造商規定的剩余電流保護電器的電壓有效值,剩余電流保護電器的性能與該值有關(尤其是短路性能)。
5.2.5 額定頻率
RCD的額定頻率是對RCD規定的以及其他特性值與之相應的電源頻率。
5.2.6額定接通和分斷能力(Im)
剩余電流保護電器在規定的條件下能夠接通、承載其斷開時間和分斷的,并不產生影響其功能變化的預期電流有效值(見3.4.5和3.4.6)。
5.2.7 額定剩余接通和分斷能力(IΔm)
剩余電流保護電器在規定條件下能夠接通、承載其斷開時間和分斷的,并不產生影響其功能變化的預期剩余電流(見3.4.7和3.4.9)的有效值。
5.2.8有或無延時
無延時的剩余電流保護電器和有延時的剩余電流保護電器。
5.2.9剩余電流含有直流分量的動作特性
5.2.9.1 AC型剩余電流保護電器
在正弦交流剩余電流下,無論突然施加或緩慢上升確保其脫扣的剩余電流保護電器。
5.2.9.2 A型剩余電流保護電器
在下列條件下確保其脫扣的剩余電流保護電器:
——同AC型;
——脈動直流剩余電流;
——脈動直流剩余電流疊加6 mA的平滑直流電流。
有或沒有相位角控制,與極性無關,無論突然施加或緩慢上升。
5.2.9.3 F型剩余電流保護電器
在下列條件下確保其脫扣的剩余電流保護電器:
——同A型;
——由相線和中性線或者相線和接地的中間導體供電的電路產生的復合剩余電流;
——脈動直流剩余電流疊加10 mA的平滑直流電流。
上述規定的剩余電流可突然施加或緩慢上升。
5.2.9.4 B型剩余電流保護電器
在下列條件下確保其脫扣的剩余電流保護電器:
——同F型;
——1 000 Hz及以下的正弦交流剩余電流;
——交流剩余電流疊加0.4倍額定剩余動作電流(IΔn)或10 mA的平滑直流電流(兩者取較大值);
——脈動直流剩余電流疊加0.4倍額定剩余動作電流(IΔn)或10 mA的平滑直流電流(兩者取較大值);
——下列整流線路產生的直流剩余電流:
a) 二極、三極和四極剩余電流裝置的連接至相與相的雙脈沖橋式整流電路;
b) 三極和四極剩余電流裝置的三脈沖星形連接或六脈沖橋式連接的整流電路。
——平滑直流剩余電流。
與極性無關,無論突然施加或緩慢上升。
5.3 不帶過電流保護(見4.4a))和僅帶過載保護(見4.4c))的剩余電流保護電器的特定特性
5.3.1 與短路保護電器(見3.4.8)的配合
短路保護電器與剩余電流保護電器的組合是用來確保剩余電流保護電器免受短路電流的影響。
剩余電流保護電器的制造商應規定短路保護電器的下列特性:
a) 最大允通I2t;
b)最大允通電流峰值Ip。
任何符合相關國家標準并且上述a)和b)項的特性值低于剩余電流保護電器制造商規定值的短路保護電器(SCPD)可用于保護剩余電流保護電器,只要其不影響正常工作。SCPD的額定值和型號應與5.3.2和5.3.3相同。
5.3.2額定限制短路電流(Inc)
制造商規定的由短路保護電器保護的剩余電流保護電器在規定條件下能承受而不使其發生影響功能變化的預期電流有效值。
注1:注意,由規定的短路保護電器控制的特定短路電流施加到剩余電流保護電器上的應力實際上是可變的,這取決于短路保護電器的個別特性(盡管其包括在相關的標準動作區域內),也與接通瞬間相對于短路電流波形上的點有關(接通點是隨機的)。
注2:制造商宜注意確保在相應于剩余電流保護電器最嚴酷的應力條件下配合的有效性。
注3:對一個與給定的短路保護電器配合的剩余電流保護電器規定額定限制短路電流,表示這種組合能承受至規定值的任何短路電流。
5.3.3 額定限制剩余短路電流(IΔc)
制造商規定的由短路保護電器保護的剩余電流保護電器在規定條件下能承受而不使其發生影響功能變化的預期剩余電流值。
注:如果對一個與給定的短路保護電器配合的剩余電流保護電器規定額定限制剩余短路電流,則認為這種組合能承受至規定值的任何剩余短路電流。
5.4優選值或標準值
5.4.1額定電壓優選值
根據GB/T 156—2007,額定電壓的優選值是110 V,120 V,220 V(230 V),380 V(400 V)。
5.4.2額定電流優選值(In)
額定電流的優選值是6 A,10 A,13 A,16 A,20 A,25 A,32 A,40 A,50 A,63 A,80 A,100 A,125 A,160 A,200 A,250 A,400 A,630 A,800A。
5.4.3額定剩余動作電流標準值(IΔn)
額定剩余動作電流的優選值是0.006 A,0.01 A,0.03 A,0.1 A,0.2 A,0.3 A,0.5 A,1 A,2 A,3 A,5 A,10 A,20 A,30 A。
5.4.4額定剩余不動作電流標準值(IΔno)
額定剩余不動作電流優選值是0.5 IΔn。
注:0.5 IΔn值僅指工頻交流剩余電流。
5.4.5在多相線路中不平衡負載時不動作電流優選的最小值
在多相線路中不平衡負載時,不動作電流優選的最小值是6 In。
注:對于帶過電流保護的剩余電流保護電器,該最小值可能更低。
5.4.6在平衡負載中不動作電流優選的最小值
在平衡負載中不動作電流的優選最小值是6 In。
注:對于帶過電流保護的剩余電流保護電器,該最小值可能更低。
5.4.7額定頻率的優選值
額定頻率的優選值是50 Hz和/或60 Hz。
5.4.8額定接通和分斷能力值(Im)
適用于不帶短路保護的剩余電流保護電器。
最小值應為10 In或500 A1),兩者取較大值。
與這些值有關的功率因數在相關的產品標準中給出。
5.4.9額定剩余接通和分斷能力的優選值(IΔm)
額定剩余接通和分斷能力的優選值是500 A1),1 000 A,1 500 A,3 000 A,4 500 A,6 000 A,10 000 A,20 000 A,50 000 A。
最小值應為10In或500 A1),兩者取較大值。
與這些電流值有關的功率因數在相關的產品標準中給出。
5.4.10額定限制短路電流的優選值
不帶短路保護的剩余電流保護電器的額定限制短路電流的優選值是1 500 A,3 000 A,4 500 A,6 000 A,10 000 A,20 000 A,50 000 A。
與這些電流值相關的功率因數在相關的產品標準中給出。
5.4.11 額定限制剩余短路電流的優選值(IΔc)
不帶短路保護的剩余電流保護電器的額定限制剩余短路電流IΔc的優選值是1 500 A,3 000 A,
1) 對移動式剩余電流裝置(PRCD)和帶剩余電流保護的固定安裝插座(SRCD)為250 A。4 500 A,6 000 A,10 000 A,20 000 A,50 000 A。
與這些電流有關的功率因數在相關的產品標準中給出。
5.4.12動作時間的標準值
5.4.12.1 無延時型RCD的最大分斷時間標準值
無延時型RCD的最大分斷時間標準值在表1、表2、表3和表4中規定。
表1 無延時型RCD對于交流剩余電流的最大分斷時間標準值
IΔn
A 最大分斷時間標準值
s
IΔn 2IΔn 5 IΔna >5 IΔnb
任何值 0.3 0.15 0.04 0.04
a 對于IΔn≤0.030 A的RCD,可用0.25 A代替5 IΔn。
b 在相關的產品標準中規定。
表2 無延時型RCD對于半波脈動直流剩余電流的最大分斷時間標準值
IΔn A 最大分斷時間標準值
s
1.4 IΔn 2 IΔn 2.8 IΔn 4 IΔn 7 IΔna 10 IΔnb >7 IΔnc >10 IΔnc
≤0.010 0.3 0.15 0.04 0.04
0.030 0.3 0.15 0.04 0.04
>0.030 0.3 0.15 0.04 0.04
a 對于IΔn=0.030 A的RCD,可以用0.35 A代替7 IΔn。
b 對于IΔn≤0.010 A的RCD,可以使用0.5 A代替10 IΔn。
c 在相關產品標準中規定。
表3 無延時型RCD對整流線路產生的直流剩余電流和/或平滑直流剩余電流的最大分斷時間標準值
IΔn
A 最大分斷時間標準值
s
2 IΔn 4 IΔn 10 IΔn >10 IΔna
任何值 0.3 0.15 0.04 0.04
a 相關的產品標準中規定。
表4對預期在120 V帶中性點的兩相系統中使用的額定剩余電流為6 mA的無延時型RCD的最大分斷時間可替代的標準值
IΔn
A 最大分斷時間標準值
s
l IΔn 2 IΔn 5 IΔn >5 IΔna
0.006 5 2 0.04 0.04
a 在相關產品標準中規定。
5.4.12.2 延時型剩余電流保護電器的分斷時間和不驅動時間的標準值
延時型僅適用于IΔn>0.03 A的剩余電流保護電器。
延時型剩余電流保護電器的分斷時間和不驅動時間的標準值在表5、表6和表7中規定。對于其他額定延時的延時型剩余電流保護電器,應由制造商規定2 IΔn的不驅動時間。
2 IΔn時的最小不驅動時間的優選值是0.06 s,0.1 s,0.2 s,0.3 s,0.4 s,0.5 s,1 s。
表5 延時型RCD對于交流剩余電流的分斷時間標準值
額定延時
s 動作時間 分斷時間標準值和不驅動時間
s
IΔn 2 IΔn 5 IΔn >5 IΔn
0.06 最大分斷時間 0.5 0.2 0.15 0.15
最小不驅動時間 b 0.06 b b
其他額定延時 最大分斷時間 ab b b b
最小不驅動時間 b 額定延時 b b
a 為確保故障保護,最大動作時間應按GB/T 16895.21—2011。
b 由相關的產品標準或制造商規定。
表6 延時型RCD對于脈動直流剩余電流的分斷時間標準值
額定延時
s 動作時間 分斷時間標準值和不驅動時間
s
1.4 IΔn 2.8 IΔn 7 IΔn >7 IΔn
0.06 最大分斷時間 0.5 0.2 0.15 0.15
最小不驅動時間 b 0.06 b b
其他額定延時 最大分斷時間 ab b b b
最小不驅動時間 b 額定延時 b b
a 為確保故障保護,最大動作時間應按GB/T 16895.21—2011。
b 由相關的產品標準或制造商規定。
表7 延時型RCD對于平滑直流剩余電流的分斷時間標準值
額定延時
s 動作時間 分斷時間標準值和不驅動時間
s
2 IΔn 4 IΔn 10 IΔn >10 IΔn
0.06 最大分斷時間 0.5 0.2 0.15 0.15
最小不驅動時間 b 0.06 b b
其他額定延時 最大分斷時間 ab b b b
最小不驅動時間 b 額定延時 b b
a 為確保故障保護,最大動作時間應按GB/T 16895.21—2011。
b 由相關的產品標準或制造商規定。
6標志和其他產品資料
剩余電流保護電器上的信息和標志應按相關的產品標準。
應提供下列信息:
a) 制造商名稱或商標;
b)型號或序列號;
c) 額定電壓;
d)額定頻率(如果不是50 Hz或60 Hz);
e) 額定電流;
f) 剩余電流含有直流分量時的動作特性:
——AC型剩余電流保護電器應標志符號
——A型剩余電流保護電器應標志符號
——F型剩余電流保護電器應標志符號 或
——B型剩余電流保護電器應標志符號 或
g)額定剩余動作電流(或范圍,如果適用);
h)額定延時(如果適用);
i) 額定剩余不動作電流(如果不是優選值時);
j) 額定剩余接通和分斷能力;
k)額定限制短路電流(如果適用時),在這種情況下還應根據5.3.1標志組合的短路保護電器的特性;
l) 防護等級(如果不是IP20時);
m)使用位置(如果適用時);
n)工作溫度范圍;
o) 試驗裝置的識別字母T或相應的文字;
p)應提供指示剩余電流保護電器斷開和閉合狀態的器件;
q) 接線圖(如果適用時)(該要求通常對大于二極或帶有不可開閉中性線的電器是必需的);
r) 如果有必要區分電源端和負載端,則應清晰地標明(例如:在相應的端子旁邊標明“電源”和“負載”);
s) 專門用于連接中性線的端子應標志符號N。
此外,對于r.c.單元:
——應標志能與其裝配或組裝的斷路器的最大額定電流;
——應標志其可與哪種斷路器裝配或組裝。
應提供所有關于產品正確裝配(如果有的話)、安裝和使用的信息。