JB/T 9568-2000 General technical requirements for relays, protection and automatic devices in power systems
Some standard content:
Cable tray standard b-t10216-2000
Machinery industry standard of the People's Republic of China
JB/T9568-2000
General technical conditions for relays, protection and automatic devices in power systems
2000-04-24 Issued by
State Bureau of Machinery Industry
2000-10-01Implementation
JB/T9568-2000
This standard is revised on the basis of ZBK45020-90 "General Technical Conditions for Power System Protection, Automatic Relays and Devices" (hereinafter referred to as the original standard). Compared with the original standard, this standard has the following important changes: 1 The name of the standard is changed to "General Technical Conditions for Power System Relays, Protection and Automatic Devices" 2 The influencing quantities and influencing factors in Tables 1 and 2 of the original standard are revised with reference to GB/T14047-1993 "Measuring Relays and Protection Devices" (idtIEC60255-6:1988).
3 The nominal range (standard limit value) of ambient temperature in the influencing quantity and influencing factors is added according to GB/T15153-1994 "Working conditions and power supply of telecontrol equipment and systems" (eqvIEC60870-2-1:1987): Outdoor sheltered environment -25~+55℃ Outdoor unsheltered environment -25~+70℃.
4 Add product safety requirements according to GB16836-1997 "General requirements for safety design of measuring relays and protection devices". 5 Since the reliability index and inspection method are not mature yet, this requirement is cancelled. 6 In the chapter "Additional requirements for static products", the 4 anti-interference requirements in the original standard are changed to 8; the requirements for product software, protection communication interface and communication protocol, static or dynamic model test requirements, and continuous power-on stable processing requirements are added. 7 According to the format and rules specified in GB/T1.1-1993 and GB/T1.31997, the standard text is edited. This standard replaces ZBK45020-90 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Measuring Relays and Protection Equipment. The drafting units of this standard are: Xuchang Relay Research Institute, Acheng Relay Co., Ltd., Xuji Electric Co., Ltd., Shanghai Relay Co., Ltd., Baoding Relay Guang, Changzheng Electric Factory No. 8. The main drafters of this standard are: Tian, Wang Yuquan, Wang Jiemin, Shao Xiaofei, Pei Jinsong. 1 Scope
Machinery Industry Standard of the People's Republic of China
General Technical Conditions for Relays, Protection and Automatic Devices in Power Systems
JB/T9568-2000
Replaces ZBK45020-90
This standard specifies the product classification, technical requirements, inspection methods, inspection rules, packaging, transportation, storage, marking, labeling, instruction manual, completeness of supply and quality assurance of relays, protection and automatic devices (hereinafter referred to as products) in power systems. This standard applies to relays, measuring relays, protection devices and automatic devices in the secondary circuit of power systems. For the control panels (cabinets, tables) and protection panels (cabinets, tables) used in the secondary circuits of the power system, in addition to the relays and devices therein which shall meet the relevant provisions of this standard, they shall also comply with the technical standards of the control panels (cabinets, tables) and protection panels (cabinets, tables). This standard applies only to new products.
2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of the standard, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T2423.3 — 1993 | | tt | 43—1990
GB/T5169.5—1997
GB/T7261—
GB/T9969.1—198 8
GB/T14436—1993
GB/T14598.3-1993
GB16836—1997
JB/T7828—1995
Basic environmental test procedures for electric and electronic products Test Ca: Steady state damp heat test method (eqvIEC60068—2—3:1984)
Basic environmental test procedures for electric and electronic products Test Db: Alternating damp heat test method (eqvIEC60068—2—30:1980) Basic terms of engineering terms (neqIEC60050) Electrical terms Electrical relays
Electrical terms Power system protection (eqvIEC60050-448) Enclosure protection degree (IP mark) (eqvIEC60529: 1989) Safety of information technology equipment (including electrical equipment) (idtIEC60950: 1991) Fire hazard test for electrical and electronic products Needle flame test (idtIEC60695-2-2: 1991) Basic test methods for measuring relays and devices General provisions for industrial product instruction manuals
General provisions for industrial product assurance documents
Insulation test of electrical relays
General requirements for safety design of measuring relays and protection devices Technical conditions for packaging, storage and transportation of relay protection and automatic devices for power systems Approved by the State Bureau of Machinery Industry on April 24, 2000 Implementation on October 1, 2000
3 Definitions
JB/T9568-2000
The terms used in this standard adopt the definitions of GB/T2900.1, GB/T2900.17 and GB/T2900.49. 4 Product classification
4.1 Type and classification
Specified by product standards.
4.2 Model and meaning
Specified by product standards.
4.3 Rated parameters
The rated parameters specified below are all recommended values, and the rated parameters are specified by product standards. 4.3.1 Rated voltage
a) AC voltage (effective value): 36, 100//3, 100, 220, 240, 220VV; b) DC auxiliary excitation: 6, 12, 24, 48, 110, 220V. 4.3.2 Rated current
a) AC (effective value): 0.5, 1, 2, 5, 10, 20, 50, 100A; b) DC: 0.15, 0.25, 0.5, 1, 2, 4, 8A. 4.3.3 Rated frequency
The rated frequency is 50, 60Hz.
4.4 Specifications
Specified by product standards.
4.5 Overall dimensions and installation dimensions
Specified by product standards.
4.6 Mass (weight)
Specified by product standards.
5 Technical requirements
Standard reference values of influencing quantities and influencing factors. 5.1
Standard reference values and test tolerances of influencing quantities and influencing factors are shown in Table 1. Table 1 Standard reference values and test tolerances of influencing quantities and influencing factors Influencing quantities and influencing factors
Ambient temperature
Atmospheric pressure
Relative humidity
Working position
External magnetic field induction intensity
Reference conditions
86~106kPa
45%~75%
Vertically installed on a vertical surface perpendicular to the ground plane
Rated value
Test tolerance
±2℃
See note!
2° in any direction
Not greater than 0 in any direction.5mT
Influencing quantities and influencing factors
AC power supply
With or without relay
Measuring relays and devices
AC component in DC 5)
DC component in AC
Values of each voltage (line voltage or phase voltage)
Between each phase (to neutral point) voltage
Each phase current
Angle between each phase current and its corresponding phase (to neutral point) voltage
JB/T9568-2000
Table 1 (end)
Reference conditions
When the temperature changes during the test, this humidity range can be exceeded as long as no condensation occurs. Test tolerance
Distortion factor 1%
Distortion factor 2% 3), 4)
With or without relay 1%
Measuring relay 6% 5)
Transient 5% of peak value,
Stand-state 2% of peak value
1% of average value
2° electrical angle
1% of average value
2° electrical angle
If the performance of the relay is independent of the frequency, the test tolerance can be larger. When the performance of the relay is closely related to the frequency and requires high accuracy, a smaller test tolerance can be specified by the product standard. 2)
If the performance is closely related to the waveform, a smaller test tolerance can be specified by the product standard. Distortion factor: The ratio between the effective value of the harmonic content obtained by subtracting the fundamental wave from the non-sinusoidal periodic quantity and the effective value of the non-sinusoidal quantity, which is usually expressed as a percentage.
5) The AC component in DC is defined as: Umar-UminUpC
Where: U is the maximum instantaneous voltage: Ui is the minimum instantaneous voltage: U is the DC component. 6) In some cases, smaller test tolerances may be required through negotiation between the manufacturer and the user. 5.2 Standard limit values of the nominal range of influencing quantities and influencing factors 5.2.1 Nominal range of ambient temperature
a) Indoor environment is selected from the following values: - for static products with requirements on ambient temperature: 0~45℃, -5~+40℃ -
-10~+50 (or +55)℃ - for static products with no requirements on ambient temperature; -25~+40℃, -25~+55℃ - for electromechanical and rectifier products. b) Outdoor environment is selected from the following values: -25~+55℃ - for products with outdoor shelter conditions; -25~+70℃ - for products without outdoor shelter conditions. c) For products with special requirements for ambient temperature, the ambient temperature shall be specified by the product standards. 5.2.2 Nominal range of frequency
The limit values of the nominal range of frequency shall be selected from the following values: -2%~+2%, -5%~+5%, 5%~+10%, -10%~+10%. 2
JB/T9568-2000
5.2.3 Nominal range of other influencing quantities and influencing factors The limit values of the nominal range of other influencing quantities and influencing factors are specified in Table 2. Table 2 Nominal range of influencing quantities and influencing factors Influencing quantities and influencing factors
Ambient temperature
Atmospheric pressure
Relative humidity
Working position
External magnetic field
Input excitation voltage
Input excitation current
Phase angle between input excitation quantities
Range of variation of input excitation quantity with or without relay AC power waveform
DC component in AC\)
AC component in DC2)
Range of variation of auxiliary excitation quantity
Nominal range
80~110kPa
The average relative humidity of the wettest month is 90%, and the average minimum temperature of the month is 25℃, and condensation should not appear on the product
Deviation from the reference in any direction 5°
Not more than 1.5mT or as specified by product standards
Specified by product standards
DC: 80%~110% of rated value;
AC: 85%~110% of rated value
Distortion factor not more than 5%
Transient: not more than 10% of peak value; Steady state: not more than 5% of peak value Not more than 12% of DC rated value
When the rated voltage of DC power supply is 110V and 220V, it is 80%~110% of the rated value; when it is 48V and below, it is 90%~110% of the rated value; the rated voltage of AC power supply is 85%~110% of the rated value1) If the influence of DC transient component in AC is significant, that is, the influence reaches the same or higher order of magnitude as the accuracy grade index, the manufacturer shall give the conditions for correction and its influence.
2) Same as Note 5 of Table 1)
5.3 Other requirements for the place of use
5.3.1 The place of use should not have vibration and impact exceeding the requirements of this standard. 5.3.2 The place of use should not have media with fire or explosion hazards, gases that corrode or damage insulation, and conductive media, and should not be filled with water vapor or have serious mold.
5.3.3 The place of use of indoor products should have facilities to prevent rain, snow, wind, and sand. 5.4 Limit values of extreme range of ambient temperature
The limit values of the extreme range of ambient temperature of the product are -25℃ and +70℃. Under transportation and storage conditions, products without excitation should be able to withstand temperatures within this range without irreversible damage. Note: For products that cannot withstand this condition, the manufacturer should provide other maximum ranges. 5.5 Working characteristics of all-or-nothing relays
5.5.1 Action values and return values
The recommended action values and return values of several basic types of all-or-nothing relays are listed in Table 3. The action values and return values of all-or-nothing relays not specified in Table 3 or with special requirements4
JB/T9568-2000
shall be specified by the product standards. Table 3 Action values and return values of several with or without relays Product type
Export tripping relay
Intermediate relay
Voltage type
Current type
Time relay
Signal relay
5.5.2 Holding value
Voltage type
Current type
Action value
≤0.7 U.
≤0.7 U,
Return value
≥5% U
General type: ≥5%U: Holding type, delay type: ≥3%U.
≥5% I
≥5% Un
≥2% Un
≥2% In
Action value
The voltage holding value shall not be greater than 0.7 times the rated voltage, and the current holding value shall not be greater than 0.8 times the rated current. 5.5.3 Temperature influence
Return value
≥15% U
≥5% U.
≥5% U,
≥15% U.
The influence of ambient temperature changes between the extreme values of its nominal range on the action value and return value shall be specified by the product standard. 5.6 Working characteristics of measuring relays and protection devices 5.6.1 Action value of characteristic quantity
The action value of characteristic quantity shall be the set value or specified by the product standard. 5.6.2 Return coefficient
5.6.2.1 The return coefficient of the overload relay or device shall not be less than 0.8, or as specified by the product standard. 5.6.2.2 The return coefficient of the underload relay or device shall not be greater than 1.25, or as specified by the product standard. 5.6.3 Accuracy of the action value
5.6.3.1 Consistency
The consistency of the action value under reference conditions is the algebraic difference between the maximum action value and the minimum action value of 10 measurements. For static products, the consistency of the action value can be determined by 5 measurements. The specific requirements for consistency are specified by the product standard. 5.6.3.2 Average error
The absolute value of the average error of the action value determined under the reference conditions shall be less than or equal to the given error value: Average error (%)_Average value of 10 (or 5) measurements-Set value×100%Set value
The given error expressed as a percentage shall generally be selected from the following values: 0.5%, 1.0%, 1.5%, (2%), 2.5%, (3%), 5.0%, 7.5%, 10% Note: For some products, such as frequency relays, the given error can also be expressed in absolute value. 5.6.4 Variation of the action value
The variation of the action value caused by any influencing quantity or influencing factor (such as temperature, frequency, waveform, etc.) changing between the extreme values of its nominal range. During the test, except for the influencing quantity or influencing factor whose variation is being determined, all other influencing quantities and influencing factors should be under the reference conditions.
To determine the variation of the action value, the average error should be used. The average error is the difference between the average value of 10 measurements under the same conditions and the set value JB/T9568-2000
. For static products, the average error can be determined by 5 measurements. The variation of the action value of an influencing quantity or influencing factor at a certain limit value expressed as a percentage is:
Variation = average error under limit conditions - average error under reference conditions...:. (2)
5.6.4.1 The product standard should specify the variation caused by an influencing quantity or influencing factor. For the variation expressed as a percentage, it is recommended to select from the following values:
0.5%, 1.0%, 1.5%, (2%), 2.5%, (3%), 5.0%, 7.5%, 10%. 5.6.4.2 When necessary, the product standard shall specify the effective range of the characteristic quantity or input excitation quantity. 5.6.5 Transient overrun
If required by the product, it shall be specified by the product standard. 5.6.6 Other working characteristics shall be specified by the product standard. 5.7 Working characteristics of automatic devices
5.7.1 Action value and accuracy of characteristic quantity Products with requirements for action value and accuracy of characteristic quantity are the same as measuring relays and protection devices, and these requirements shall be specified in the product standard.
5.7.2 Other working characteristics shall be specified by the product standard. 5.8 Time characteristics of productsbZxz.net
5.8.1 Action time
5.8.1.1 The action time of relays with or without input excitation shall be measured at the rated value of input excitation or under the provisions of product standards. The product standards shall specify its specific requirements.
5.8.1.2 The action time characteristics of measuring relays and devices, such as action time (quick action time, whole group action time), definite time, other definite time characteristics, etc. and test conditions, shall be specified by product standards. 5.8.1.3 The action time of automatic devices shall be specified by product standards. 5.8.2 Accuracy of definite time
5.8.2.1 Consistency
Under reference conditions, the consistency of definite time is the difference between the maximum delay and the minimum delay of 10 measurements. For static products, the consistency of definite time can be determined by 5 measurements. The specific requirements of consistency are specified by product standards. 5.8.2.2 Average error
The absolute value of the average error of the definite time determined under reference conditions shall be less than or equal to the given error value. The calculation of the average error is the same as formula (1).
For the given error expressed as a percentage, it is recommended to select from the following values: 0.5%, 1.0%, 1.5%, (2%), 2.5%, (3%), 5.0%, 7.5%, 10%. 5.8.3 Variation of the time limit
The test conditions and methods for the variation of the time limit are the same as those in 5.6.4. 5.8.3.1 For products with a time limit, the product standard shall specify the variation caused by a certain influencing quantity or influencing factor. For the specified variation expressed as a percentage, it is recommended to select from the following values: 0.5%, 1.0%, 1.5%, (2%), 2.5%, (3%), 5.0%, 7.5%, 10%. 5.8.3.2 When necessary, the product standard shall specify the value of the increase in the consistency of the time limit caused by the change of a certain influencing quantity or influencing factor. 6
JB/T9568-2000
5.8.4 Other time characteristics of the product, such as return time, contact bounce time, etc., shall be specified by the product standard. 5.9 Rated power consumption
Specified by the product standard.
5.10 Thermal performance requirements
5.10.1 Maximum allowable temperature
When the ambient temperature is the maximum nominal ambient temperature of the product (see 5.2), the maximum allowable temperature of each heat-generating component of the product shall comply with the provisions of Table 4.
Table 4 Maximum allowable temperature
Name of materials and parts
Insulated wires, wound coils and
Metal conductors wrapped with insulating materials
Parts in contact with coils
Parts not in contact with coils
Other components (such as resistors) or materials inside the product 5.10.2 Continuous heat resistance limit of input excitation Y-level insulation
A-level insulation
E-level insulation
B-level insulation
F-level insulation||tt ||H-class insulation
C-class insulation
Maximum allowable temperature
Specified by product standards
Same as the coil in contact
Do not damage the insulating material or other adjacent materials. It should comply with the relevant component or material standards and should not damage its adjacent parts. The continuous heat resistance limit value of all input excitation circuit excitation quantities of continuous working products shall be 1.1 times the rated value or specified by the product standards for voltage input excitation circuits and AC current input excitation circuits, and specified by product standards for DC current input excitation circuits. For products with two or more excitation quantities, the continuous heat resistance limit value of one input excitation quantity shall be given when the other excitation quantities are rated values. If there are special requirements, they shall be specified in the product standards. 5.10.3 Short-time heat resistance limit value of input excitation quantity 5.10.3.1 Short-time heat resistance limit value of input excitation quantity of short-time working products. The product standard shall specify the short-time heat resistance limit value of the corresponding input excitation quantity of each input circuit and the duration of excitation. For products with two or more excitation quantities, the short-time heat resistance limit value of one input excitation quantity shall be given when the other excitation quantities are at the rated value. If there are special requirements, they shall be specified in the product standard. 5.10.3.2 Short-time heat resistance limit value of input excitation quantity for continuous working products For continuous working products, each input circuit shall withstand the short-time limit withstand value of the corresponding input excitation quantity applied separately, and other input excitation quantities (if any) shall be their respective rated values. If there are special requirements, they shall be specified by the product standard. The product standard shall specify the short-time heat resistance limit value. For the current circuit, the short-time limit withstand current shall be 10, 20, 30 or 40 times the rated current, but shall not be greater than 250A. For the voltage circuit, the short-time heat resistance limit value shall be 1.4 times the rated value. The duration of the short-time heat resistance limit value is as follows: a) Current circuit 1s:
b) Voltage circuit 10s.
JB/T9568-2000
Product standards may also specify other durations and corresponding short-time heat resistance limit values. 5.10.3.3 Short-time heat resistance limit evaluation
After the short-time heat resistance limit value test, the product should have no insulation damage, no permanent mechanical deformation of the coil and structural parts, and the relevant performance and insulation requirements should still meet the requirements of the product standard. 5.11 Dynamic stability limit value of excitation quantity
5.11.1 The product should withstand the input excitation current of the dynamic stability limit value of the excitation quantity specified in its standard, and its peak value should be at least 2.5 times the short-time heat resistance limit value of the input excitation quantity, and the duration should be at least half a cycle of the rated frequency. 5.11.2 After the dynamic stability limit value test, the product should have no insulation damage, no permanent deformation and damage of the coil and structural parts, and the insulation and relevant performance of the product should meet the requirements of the product standard. 5.12 Mechanical requirements
5.12.1 Mechanical life
5.12.1.1 When the output circuit is not loaded, the measuring relay and device should be able to complete 10* operations. If there are special requirements, they shall be specified by the product standard.
For devices with only electromechanical relays in the output circuit, if the output relays have been tested and proven to meet the mechanical life requirements, the product does not need to be tested for mechanical life. The number of cycles (action and return) with or without relay output circuits without load is specified by the product standard, but shall not be less than 104 times. 5.12.1.2 Test rate
is specified by the product standard. The number of cycles per hour is generally selected from the following values: 30, 60, 120, 360, 720, 1800, 3600, 7200, 18000, 36000, 72000. 5.12.1.3 Qualification criteria
a) During the mechanical life test, the product should be able to operate and return reliably; b) After the mechanical life test, the error and consistency of the action value and action time (if required) of the measuring relay and device should not exceed 2 times the value specified in the product standard. If there are special requirements, they should be specified in the product standard. The action value, action time and return time (if any) with or without relays should comply with the provisions of the product standard: c) After the mechanical life test, the insulation of the product should not be damaged, and the dielectric strength test voltage borne by the product should not be less than 75% of the value specified in the product standard:
d) After the mechanical life test, the mechanical properties of the product are intact, and there is no permanent deformation and damage to the parts and components. 5.12.2 Plug-in life of plug-in products
Under the condition of no excitation, the product is disconnected from the external electrical connection and should be able to withstand 200 times of pulling out and inserting from its housing or socket. After the test, its connector should still be able to complete its intended function, and the contact resistance should not be greater than the specified value of the connector standard. Note: If the plug-in structure or connector of the product is proved to meet the requirements of this clause through tests, the plug-in life test may not be performed on the product. 5.12.3 Mechanical life of product setting controller Under the condition of no excitation, the product setting controller (components and devices for adjusting the setting value, such as potentiometers, plugs and sockets, switches, etc.) should be able to withstand 200 adjustments. After the test, the controller can still complete its intended function within the specified product performance error range.
Note: If the setting controller is proved to meet the requirements of this clause through tests, the mechanical life test of the setting controller may not be performed on the product. 8
5.12.4 Vibration
JB/T9568-2000
The product standard should specify the ability of the product to withstand mechanical vibration. Vibration test (sinusoidal) is divided into vibration response test and vibration endurance test.
5.12.4.1 Vibration response test
When conducting the vibration response test, the excitation amount should be applied to the product according to the product standard. The test parameters are as follows: a) The nominal frequency range of the test is 10Hz~150Hz, and the crossover frequency is 58Hz~60Hz; b) The sweep rate is 1 frequency/minute (soil 10%); c) The test parameters of different severity levels are listed in Table 5, and the specific severity level is specified by the product standard. Table 5 Severity level of vibration response test
Severity level
Displacement amplitude below the crossover frequency
Level 0 is applicable to products without vibration requirements;
Level 1 is applicable to products under normal use conditions: Level 2 is applicable to products under use conditions with higher vibration intensity. d) Qualification criteria
Acceleration amplitude above the crossover frequency
Number of sweep cycles on each axis
During the test, the product should not malfunction. Unless otherwise specified in the product standard, it is considered that there is no malfunction when the time for its output circuit to change the normal state does not exceed the following specified values: 100μS for with or without relays; 2mS for measuring relays and devices. The test should not cause the card to fall off or permanently change the state of the signal indicator. After the test, the product should not be mechanically damaged, and the product performance should still meet the requirements of the product standard. The change in the action value of the measuring relay and the device should not exceed 0.5 times the specified error value. 5.12.4.2 Vibration endurance test
During the vibration endurance test, no excitation is added to the product. The test parameters and qualification criteria are as follows: a) The nominal frequency range of the test is 10~150Hz: b) The sweep rate is 1 frequency/minute;
c) The test parameters of different severity levels are listed in Table 6, and the specific severity level is specified by the product standard; Table 6 Severity level of vibration endurance test
Severity level
Acceleration amplitude
Level 0 is applicable to products without vibration requirements;
Level 1 is applicable to products under normal use conditions and transportation conditions; Level 2 is applicable to products under use conditions with higher vibration intensity and harsh transportation conditions Number of sweep cycles on each axis
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