JB/T 5861-2002 Directional relays and power relays with two input excitation quantities
Some standard content:
ICS29.120.70
Machinery Industry Standard of the People's Republic of China
JB/T5861—2002
Replaces JB/T5861-1991
Directional relays and power relays with two input energizing quantities (IEC60255-12:1980, NEQ)
Published on July 16, 2002
Implementation on December 1, 2002
Published by the State Economic and Trade Commission of the People's Republic of ChinaForeword
1 Scope
Normative references
3 Terms and definitions
4 Technical requirements,
4.1 Standard values.
Action and accuracy
Methods for testing relay characteristics and performance
Thermal performance requirements
Mechanical requirements.
Vibration resistance
Impact resistance..
Collision resistance.
Auxiliary excitation quantityWorking range limit values
Contact performance.
Rated power consumption,
Additional requirements for static products
5 Test methods.
5.1 Tests on accuracy and action characteristics.5.2. Thermal performance requirements test
5.3 Mechanical life.
5.4 Vibration resistance
5.5 Impact resistance.
5.6 Collision resistance..
5.7 Pulse group interference resistance
5.8 Electrostatic discharge interference resistance..
5.9 Electromagnetic field interference resistance..
5.10 Fast transient interference resistance.
5 .11 Ability to withstand the impact of interruption of auxiliary excitation quantity 6 Inspection rules,
7 Marking, label, instruction manual
7.1 Marking and data
7.2 Label and instruction manual
8 Packaging, transportation and storage
9 Completeness of supply
9.1 Documents supplied with the device
9.2 Accessories supplied with the device
JB/T5861—2002
JB/T5861—2002
Quality assurance
Action characteristics of power relay
Action characteristics of power relay at a given angle. Figure 3
Operation characteristics of directional relay (directional angle measuring relay)Figure 4
Operation characteristics of directional relay with variable reference input excitation quantityOperation time of other definite time power relayOperation time of self-definite time power relayOperation time of definite time directional relay..Operation time of definite time directional relay.
Reset time of definite time directional relay, example diagram of test circuit
Standard value
Reference value and test tolerance of influencing quantity and influencing factorStandard limit value of nominal range of influencing quantity and influencing factor14
JB/T5861-2002
The degree of consistency between this standard and EC60255-12:1980 "Electrical relays Part 12: Directional relays and power relays with two input excitation quantities" is non-equivalent. This standard is based on JB/T9568-2000 "General Technical Requirements for Relays, Protection and Automatic Devices in Power Systems" and revised on the basis of JB/T5861-1991 "Directional Relays and Power Relays with Two Input Excitation Quantities". It mainly adds 4.13 "Additional Requirements for Static Products" in Chapter "Requirements", part of the content in Chapter 5 "Test Methods" and Chapters 6 to 10. This standard replaces JB/T5861-1991.
This standard is proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Technical Committee for Standardization of Measuring Relays and Protection Equipment. This standard was drafted by Acheng Relay Co., Ltd. Drafters of this standard: Zhao Yucheng, Wang Yanhua. This standard was first issued in 1991. bZxz.net
1 Scope
Directional relays and power relays with two input excitation quantities JB/T5861-2002
This standard specifies the technical requirements, test methods, inspection rules, marking, labeling, instruction manual, packaging, transportation, storage, supply completeness and quality assurance of directional relays and power relays (hereinafter referred to as relays) with two input excitation quantities. This standard applies to directional relays and power relays, but does not include impedance relays. The requirements for phase angle (direction) in this standard can be combined with the requirements for other characteristics (such as current) specified in the relevant electrical relay standards to apply to combined products such as "directional current relays". For special cases, the manufacturer and the user can negotiate and determine or specify additional requirements in product standards or enterprise standards. This standard is only applicable to new relays.
2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties that reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version is applicable to this standard. GB/T 1.3-1997 Guidelines for standardization work Unit 1: Rules for drafting and expressing standards Part 3: Provisions for the preparation of product standards GB/T 2900.1-1992 Basic terms of electrical engineering terminology (neqEC60050) GB/T 2900.17-1994 Electrical engineering terminology Electrical relays GB/T 7261-2000 Basic test methods for relays and devices GB/T 14598.3-1993 Electrical relays Part 5: Insulation tests on electrical relays (eqvEC60255-5:1977) JB/T 7828-1995 Technical conditions for packaging and transportation of relays and their devices JB/T 9568-2000 General technical conditions for relays, protection and automatic devices in power systems 3 Terms and definitions
The terms and definitions established in GB/T 2900.1-1992 and GB/T 2900.17-1994 and the following terms and definitions apply to this standard. 3.1
Directional relay (phase angle measuring relay) directional (phase angle measuring) relay A relay with two input excitation quantities. According to design requirements, the relay is intended to respond only to the relative phase between current or voltage and another current or voltage reference quantity.
power relay
Power relay
A relay with two input excitation quantities, current and voltage. According to design requirements, the relay is intended to respond only to power. 3.3
Characteristic angle of power and directional relays characteristic angle of power and directional relays The angle between two input quantities represented by vectors, which is used to describe the performance of the relay. 3.4
Connection angle of power and directional relays 1) For electromechanical products, the characteristic angle is usually the angle at which the relay exhibits maximum sensitivity. 2) A given relay may have several characteristic angles. On the other hand, a given relay can be connected in a selectable manner, for example, by switching, various connection angles are obtained, and a given characteristic angle is combined with a given connection angle, resulting in the overall performance of the relay being suitable for a given purpose. 1
JB/T5861-2002
That is, the angle between the two input excitation quantities caused by the different connections of the two circuits. 3.5
directionalsensitivity
Directionalsensitivity
When one input excitation quantity is its reference value and the angle between the two input excitation quantities is the characteristic angle, the directional sensitivity is the minimum value of the other input excitation quantity that causes the relay to operate.
4 Technical requirements
4.1 Standard values
4.1.1 Input excitation quantity, auxiliary excitation quantity and frequency The standard values of input excitation quantity, auxiliary excitation quantity and frequency are specified by product standards or enterprise standards in accordance with JB/T9568-2002. The effective range of input excitation quantity is specified by product standards or enterprise standards. 4.1.2 Characteristic angle and connection angle
Characteristic angle and connection angle are specified by product standards or enterprise standards. 4.1.2.1 The value of characteristic angle and connection angle
The value of characteristic angle and connection angle is specified by product standard or enterprise standard 4.1.2.2 Setting range of characteristic angle
The setting range of characteristic angle is specified by product standard or enterprise standard. 4.1.3 Definite time
There is no standard rated value for the definite time. Whether the relay has self-definite time characteristic or other definite time characteristic shall be specified by product standard or enterprise standard.
Note: Other definite time characteristic is mainly used for power relay. For directional relay, the characteristic quantity is angle, and other definite time characteristic is only used in special cases. 4.1.3.1 Self-definite time relay
The time characteristic of this relay is specified by product standard or enterprise standard. 4.1.3.2 The time characteristic of other definite time relay with rising function is determined by the shape of characteristic curve. The shape of characteristic curve is specified by product standard or enterprise standard (see 4.3 of this standard). 4.1.3.3 The time characteristic of other definite time relay with falling function is determined by the shape of characteristic curve. The shape of the characteristic curve is specified by the product standard or enterprise standard (see 4.3 of this standard). For other time-limited relays, the time limit decreases as the characteristic quantity increases. For other time-limited relays with a decreasing function, the most common characteristic curve corresponds to the following formula:
Where:
Theoretical action time:
K-constant characterizing the relay action characteristic; G characteristic quantity value;
Basic value of G characteristic quantity:
α-exponent characterizing the algebraic function.
According to the α value, it can be divided into 3 types:
—Type B
α≤0.5;
0.5<α≤1.5;
α>1.5.
JB/T5861—2002
Table 1 lists the standard values of the above types. If these values are not applicable, the product standard or enterprise standard should give the curve characteristics suitable for its design.
Standard value
Note: The definite time characteristic is mainly used for power relays, and its characteristic quantity is angle. The definite time characteristic is only used in special cases. 4.1.4
Reset time
It is specified by product standards or enterprise standards.
4.1.5 Reference values of influencing quantities and influencing factors and standard reference values of nominal range 4.1.5.1 Reference values and test tolerances of influencing quantities and influencing factors The reference values and test tolerances of influencing quantities and influencing factors are shown in Table 2. Table 2 Reference values and test tolerances of influencing quantities and influencing factors Influencing quantities and influencing factors
Ambient temperature ℃
Atmospheric pressure kPa
Relative humidity
Magnetic induction intensity of external magnetic field
Input excitation voltage
Input excitation current
Phase angle of input excitation quantity
AC component (ripple) in DC'
AC
DC component
Setting value
Balanced multiphase power supply
Characteristic curve parameter
Setting value
Voltage or current
AC component in DC
DC component in AC
Reference value*
86~106
45~75b
Specified by product standards or enterprise standards
Test tolerance||tt ||2° in any direction; for static relays, as specified by product standards or enterprise standards
No more than 0.5mT in any direction
as specified by product standards or enterprise standards
The characteristic angle or the setting range of the characteristic angle should be given. Rated value
as specified by product standards or enterprise standards
Distortion coefficient 2%=f
2% of peak value
5% of AC peak value
as specified by product standards or enterprise standards
as specified by product standards or enterprise standards
Rated value
Rated value
as specified by product standards or enterprise standards
Distortion coefficient 2%t
2% of peak value
5% of AC peak value
Special application conditions or relay characteristics may require the use of non-standard values. In this case, the product standards or enterprise standards should specify the reference value and deviation. For example, special applications may require the use of 40°C as the reference value for the ambient temperature instead of 20°C. 3
JB/T5861—2002
Table 2 (continued)
When the temperature changes during the test, this temperature range can be exceeded as long as no condensation occurs. For directional relays, a reference phase angle must be taken when measuring time and sensitivity. If the performance of the relay is independent of frequency, the deviation can be larger: if the relay is highly dependent on frequency and high accuracy is required, a smaller deviation can be specified.
If the performance is closely related to the waveform, a smaller deviation can be specified. Distortion coefficient, the ratio of the effective value of the harmonic obtained by subtracting the fundamental wave from the non-sinusoidal periodic quantity to the effective value of the non-sinusoidal quantity, usually expressed as a percentage. 8
AC component in DC: The ripple content of a DC power supply is the ratio of the difference between the maximum instantaneous value and the minimum instantaneous value to the DC component, expressed as a percentage, and the DC component is the average value of the waveform.
Sometimes, with the agreement of the manufacturer and the user, a smaller deviation may be required. For special relays, when multiple measurements are to be made on a relay, which input current is taken as the reference condition should be specified by the product standard or enterprise standard.
Self-heating: When the relay is installed in a normal working place where self-heating is significant (i.e., the accuracy change caused by self-heating reaches the same order of magnitude as the accuracy grade index or even greater than it), the reference condition of the self-heating effect of the relay should be specified by the product standard or enterprise standard. When no special requirements are given in the product standard or enterprise standard, the following requirements should apply: The difference between the various voltages (between any two phases and between each phase and the neutral point) of a multi-phase symmetrical system should not be greater than 1% of the average value of each voltage; the difference between the currents of each phase should not be greater than 1% of the average value of the system current; the angle between the current of each phase and the voltage of the phase (to the neutral point) should be the same, with a tolerance of 2° electrical angle. Limit values of nominal range of influencing quantities and influencing factors 4.1.5.2
The limit values of nominal range of influencing quantities and influencing factors are listed in Table 3. Within this nominal range, the device should work reliably. Table 3
Influencing quantities and influencing factors
Ambient temperature
Atmospheric pressure
Relative humidity
External magnetic field
Input excitation voltage
Input excitation current
Phase angle between input excitation quantities
Frequency Hz
DC component in AC
Setting value
Setting parameters of transient?
Curve
Setting value||tt ||Voltage or current
Standard limit values of the nominal range of influencing quantities and influencing factors Nominal range
-25~+40*
0~+45, 10~+50,
80~100
The maximum relative humidity of the wettest month is 90%, and the average minimum temperature of the month is 25℃, and condensation or ice should not form on the product
5° in any direction from the reference position; for static relays, the product standard or enterprise standard shall specify Specify by product standards or enterprise standards
See Note 2 in Table*
Specified by product standards or enterprise standards
Rated value ±2%
Specified by product standards or enterprise standards
Specified by product standards or enterprise standards
All setting values except the reference setting value
Specified by product standards or enterprise standards
All setting values except the reference setting value
Specified by product standards or enterprise standards||tt ||Auxiliary excitation
Influence quantity and influencing factors
AC component (ripple) in DC
Table 3 (continued)
0%～12% of DC rated value
Nominal range
JB/T5861-2002
When one or more relays installed in their own housings are installed in an additional housing or a small enclosed space, the upper limit of the ambient temperature nominal range should generally be higher, such as 55℃. Inside the relay, neither water vapor nor ice should be condensed. If the DC transient component in AC is very significant, that is, its influence is the same as or greater than the accuracy grade index, the product standard or enterprise standard should specify the conditions for calibration and the influence of the DC transient component in AC. 4.1.6 Influence quantity and influencing factors Extreme range limit value The limit values of the temperature extreme range are -25℃ and +70℃. Under the conditions of transportation, storage and installation, the product without excitation should be able to withstand temperature changes within this range and should not suffer irreversible damage.
4.1.7 Characteristic quantity and setting range
There are no standard rated values for characteristic quantity and setting range. These values and the limit values of the setting range shall be specified by product standards or enterprise standards. 4.1.8 Reset value and exit value
Reset value and exit value shall be specified by product standards or enterprise standards according to the following principles: For power relays, they shall be specified in proportion or percentage. For directional relays, they shall be specified in degrees at critical conditions. 4.2 Action and accuracy
4.2.1 Action
4.2.1.1 Action characteristics
The manufacturer shall give the action characteristics of the relay under reference conditions (including reference setting values). If appropriate, they can be expressed as the combined effect of the characteristic angle and the connection angle.
4.2.1.2 Action time and reset time
The action time and reset time of the relay under reference conditions (including reference setting values) and the initial and final values of the input excitation quantity shall be specified by product standards or enterprise standards. 4.2.1.3 Effective range
The effective range of voltage, current and phase angle shall be specified by product standards or enterprise standards. 4.2.1.4 Reference setting value
Product standards or enterprise standards shall specify the reference setting value of relays, and the remaining setting values shall be considered as influencing factors. 4.2.1.5 Output circuit
Product standards or enterprise standards shall specify the state of the relay output circuit under reference conditions when any of the input excitation quantities is zero and the other quantity is a specified value.
4.2.2 Accuracy
For power relays and directional relays, the operating characteristics of the relays under reference conditions, and for the other time limits and self-time limits of time-limited relays, the accuracy shall be considered.
For accuracy, the specified errors of all types of relays under reference conditions shall be specified by product standards or enterprise standards. When the specified error is expressed as a percentage, its value should be selected from the following series: 0.5, 1.0, 1.5, 2.5, 5.0, 7.5, 10, 20. 4.2.2.1 Action Characteristics
The accuracy of the action characteristics can be expressed by the maximum and minimum critical lines of the effective range using the graphical method shown in Figures 1 to 4; it can also be expressed by other methods specified by product standards or enterprise standards, including methods other than the graphical method. 4.2.2.2 Action Time and Reset Time
The accuracy of the action time and reset time can be expressed by the maximum and minimum critical lines of the effective range using the graphical method shown in Figures 5 to 9; it can also be expressed by other methods specified by product standards or enterprise standards, including methods other than the graphical method. 5
JB/T5861—2002
Reactive power
No action zone
—Indicates the error limit and variation when U is 100% of the rated voltage; Indicates the error limit and variation when U is k% of the rated voltage: ..--Indicates the error limit and variation when U is k2% of the rated voltage; kz
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