JB/T 3777-2002 Holding intermediate relay

This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, instruction manual, packaging, transportation and storage of holding intermediate relays. JB/T 3777-2002 Holding intermediate relays JB/T3777-2002 Standard download decompression password: www.bzxz.net

ICS29.120.70
2002-07-16
JB/T3777—2002
JB/T3777
2002-12-01
This standard is a revision of 1B/T3777—1993 "Maintaining Intermediate Relay". Compared with JB/T3777—1993, the main changes are as follows. The standards are all based on the latest version of the standard; JB/T3777—2002
This standard is divided into 10 chapters , open in accordance with! BT9568--2000 "General Technical Requirements for Relays, Protection and Automatic Devices in Power Systems" has made appropriate adjustments to the provisions of Chapter 4, Chapter 5, and Chapter 6: According to the current industry standard JB9563-2000, the "AC power waveform" and "frequency" are added to the influencing factors and influencing factors in Table 1 and Table 2 of the standard. The "external magnetic field magnetic induction intensity nominal specification" content in Table 2 of the original standard has been changed to "not more than [mT wear" according to the current industry standard JH/T9568-2000. According to the current industry standard JB/T9568-2000, the original standard technical requirements of "vibration response capability, shock response capability" "the time for the output contact to change the normal state shall not exceed 2nls" is now changed to "the time for the output contact to change the normal state shall not exceed 100s:
According to the current industry standard JB/T9568--2000 5.13.3.2, the original standard technical requirements of "moisture and heat resistance performance" added "after the test, the relay recovers under the standard push test atmospheric conditions After 2 hours of recovery, an appearance inspection should be carried out": Chapter 8 of the original standard is divided into Chapter 8.9 according to GB/T1.2, and Chapter 9 of the original standard is changed to Chapter 10. According to 11.1 of JB/T9568-2000, the quality assurance period of relays is changed from one year in the original standard to two years; Chapter 7 and Chapter 1 of the original standard are changed to "specified by the enterprise product standards." ", "The enterprise product standards are specified in accordance with Chapter 8 of B/T9568-2000"; Editorial changes have been made to individual words. This standard replaces B/T3777-1993. This standard is proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Technical Committee for Measurement Relays and Protection Equipment. This standard is drafted by Shanghai Relay Co., Ltd. The main drafter of this standard is Wang Jiemin. This standard was first issued in 1984 and revised for the first time in 1993. 1 Scope Holding intermediate relay JB/T 3777-2002 This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, instruction manual, packaging, transportation and storage of holding intermediate relays. This standard applies to holding intermediate relays (hereinafter referred to as relays) used in the secondary circuit of the power system. This type of relay is used as an auxiliary relay in the secondary circuit of the power system to increase the number of contact pairs, contact capacity or conversion circuit of the previous relay and maintain its operating state after the working winding is de-energized. This standard is applicable to new relays. 2 Normative reference documents The clauses in the following documents are adopted by this standard! For all referenced documents with a date, 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 all undated referenced documents, the latest versions are applicable to this standard. GB/T 2930.1-1992 Basic terms in electrical terms (neg IEC 60H)50) GB/T 2900.17—1994 Technical Specification for Electrical Relays GB/T7261--2000 Basic Test Methods for Relays and Devices JB/T7828—1995 Technical Conditions for Packaging, Storage and Transportation of Relays and Their Devices JB/T9568-2000 General Technical Conditions for Relays, Protection and Automatic Devices in Power Systems JB/T10103-1999 Relay Modification Devices: Product Model Compilation Method 3 Terms and Definitions
The terms and definitions established in GB/T2900.[—1992 and GB/T2900,17—1994 apply to this standard. 4 Product Classification
4.1 Type and Classification
The relay is based on the electromagnetic principle and is classified into a) According to the installation method: protruding type and embedded type b) According to the wiring method: front wiring and rear wiring: c) According to the structural type: plug-in type and non-plug-in type. 4.2 Model and meaning
The compilation of relay model shall be in accordance with the provisions of JB/T10103-1999: 4.3 Rated data
a) Rated DC working voltage: 12V, 24V, 48V, 110V, 220V: b) Rated DC working current: 0.25A, 0.5A, IA, 2A, 4A, 8A: e) Rated holding voltage value: 12V, 24V, 48V, 10V, 220V: d) Rated holding current value: 0.25A, 0.5A, [A, 2A, 4A, 8A. 4.4 Variety specifications
Specified by the enterprise product standards.
4.5 Overall dimensions and installation dimensions
JB/T 3777-2002
Specified by the enterprise product standards.
4.6 Direct quantity
Specified by the enterprise product standard,
5 Technical requirements
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 1 Table 1 Reference values ​​and test tolerances of influencing quantities and influencing factors Influencing quantities and influencing factors
Ambient temperature
Relative humidity
External magnetic fieldMagnetic induction intensity
AC power waveform
AC component in DC
Reference value
85k Pa-106kPa
45%·~75%
Vertically installed on the vertical surface parallel to the ground plane0bzxZ.net
S0Iz（60Hz）
Standard limit values ​​of nominal range of influencing quantity and influencing factor test tolerance
The inclination in any direction shall not exceed 2°
No more than 0.5mT in any direction
The solid number of sunny changes shall not exceed 1%
More than 1% of the peak value
The standard limit values ​​of nominal range of influencing quantity and influencing factor are shown in Table 2. Within this range, the relay should be able to work. 5.3 Other requirements for the place of use
The place of use is not allowed to exceed the vibration response and impact response values ​​specified in the enterprise standard: a
The place of use must not have explosive media, and the surrounding medium should not contain gases and conductive media that corrode metals and destroy insulation. It is not allowed to be filled with water vapor and have serious bacteria. The place of use should have facilities to prevent rain, air, wind and sand. The limit values ​​of the extreme range of ambient temperature
The limit values ​​of the extreme range of ambient temperature are -25℃ and +70℃. No excitation is applied to the relay under the limit values, and no irreversible damage will occur. After the temperature returns to normal, the main performance of the relay shall comply with the standard limit values ​​of 5.5-~5.8 of this standard Table 2 Influence quantity and influencing factors Nominal range of standard limit values ​​Influence quantity and influencing factors
Ambient temperature
Atmospheric pressure
Relative humidity
Working position
Magnetic induction intensity of external magnetic field
AC power waveform
Converter component (modified wave) in DC
Range of variation of input excitation quantity
Nominal range
-25℃~+40℃, the average temperature within 24h does not exceed 35℃80kHa--10kPa
The average maximum relative humidity of the wettest month is 90%, and the average minimum temperature of that month is 25℃, and there is no condensation on the surface. When the maximum temperature is 40°C, the average maximum relative humidity shall not exceed 50%
The deviation from the reference position in any direction shall not exceed 1.5mT or the distortion factor specified by the enterprise product standard shall not exceed 5%
50Hz±1Hz, 60Hz±1.2Hz
Not more than 12% of the DC rated value
When the DC rated voltage is 110V and 220V, it shall be 80%~110% of the rated value, and when it is 48V and below, it shall be 9%~110% of the rated value
5.5 Action value and return value
JB/T 37772002
When the input excitation is DC voltage, the action value is 30%~70% of the rated voltage. When the input excitation is DC current, the action value shall not exceed 80% of the rated current
The return value shall not be less than 3% of the rated value.
5.6 Holding value
For relays with voltage holding windings, the holding voltage shall not exceed 70% of the rated holding value. For relays with current holding windings: the holding current shall not exceed 80% of the rated holding value.
5.7 Action time
When the rated value is applied to the relay, the action time of the relay from the application of the excitation to the closing of the make contact shall be specified in the enterprise product standard and shall not exceed 45ms. For relays with damping windings, the action time shall be specified in the enterprise product standard. 5.8 Return time
The time from when the excitation of the relay drops to the return value to the opening of the break contact shall be specified in the enterprise product standard and shall generally not exceed 60ms: For relays with damping windings, the action time shall be specified in the enterprise product standard. 5.9 Power consumption
Under the rated value, the maximum power consumption of the working winding and holding winding of the relay shall be specified in the enterprise product standard. 5.10 Thermal performance requirements
5.10.1 When the ambient temperature is 40℃, the working winding of the relay shall be able to withstand 1.1 times the rated value for a long time without causing thermal damage to the insulation or other components, and the temperature rise of the coil shall not exceed 105℃. 5.10.2 When the ambient temperature is 40℃, the relay current holding winding is allowed to withstand three times the rated holding current for 5s without insulation damage.
5.11 Effect of ambient temperature changes on performance When the ambient temperature is the standard limit value of the nominal range specified in Table 2, the relay action value shall comply with the provisions of 5.5, and the relay shall be able to operate.
5.12 Insulation performance
5.12.1 Insulation resistance
The insulation resistance between each circuit of the relay and the exposed non-live metal parts and the external end, as well as between the coil circuit and the contact circuit, measured by a test instrument with an open circuit voltage of 500V, shall not be less than 300Ms2. 5.12.2 Dielectric strength
5.12.2.1 The insulation resistance between each circuit of the relay and the exposed non-live metal parts and the shell, between the working winding and the contact circuit not connected to the holding winding, shall be able to withstand an AC test voltage of 2kV (effective value), 50Hz, for 1min, without insulation breakdown or flashover. 5.12.2.2 Between different contact groups of the relay, between the working winding and the holding winding, or between the holding winding and the holding winding, shall be able to withstand an AC test voltage of 1kV (effective value), 50Hz, for 1min, without insulation breakdown or flashover. 5.12.2.3 The same contact group should be able to withstand an AC test voltage of 500V (effective value): 50Hz for 11 minutes without insulation breakdown and flashover.
5.12.2.4 During factory inspection, the test duration is allowed to be shortened to 15, but the test voltage should be increased by 10%. 5.12.2.5 When rechecking the dielectric strength, the test voltage value is 75% of the specified value. 5.12.3 Impulse voltage
The relay circuits and the exposed non-electric metal parts and the casing should be able to withstand a test voltage with a waveform of standard electric wave and an amplitude of 5kV, and there will be no insulation damage afterwards. After the test, the relay should meet the performance requirements specified in 5.5 to 5.8. During the test, flashover that does not damage the insulation is allowed. If flashover occurs, the insulation resistance and dielectric strength shall be rechecked, and the dielectric strength test voltage value shall be 75% of the specified value: 5.13 Resistance to humidity and heat
The relay shall be subjected to two cycles (48h) of alternating humidity and heat test at the highest temperature of +40°C. Within 2h before the end of the test, the insulation resistance shall be measured at the specified positions in 5.12.1 using a tester with an open circuit voltage of 3
JB/T 3777-2002
500V. The dielectric strength shall be able to withstand the recheck test voltage value specified in 5.12.2.5S, without insulation breakdown or flashover. After the test, the relay shall be inspected for appearance after 2h of recovery under standard test atmospheric conditions. 5.14 Contact performance
5.14,1 Contact breaking capacity
Relay contacts should be able to disconnect a DC inductive load circuit with a voltage not exceeding ±250V and a time constant of (5±0.75)tms or (40±65)ms or a voltage not exceeding 250V AC (cos9=D.4±0.1). Under the rated breaking capacity of the contacts, the maximum current allowed for contact disconnection is generally selected according to Table 3.
Table 3 Rated breaking capacity of contacts, maximum current allowed for disconnection Long-term permissible closing current Melting point type
Rated breaking capacity
5.14.2 Long-term permissible closing current of contacts AC VA
Long-term permissible closing current is generally selected according to Table 3. 5.14.3 Overload capacity
Maximum current allowed to be disconnected A
Long-term allowable
Closing current
The contacts should be able to reliably close and disconnect 1.5 times the rated disconnection capacity for 10 times without continuous arcing. If there are special requirements, they should be specified in the enterprise product standards.
5.14.4 The contact time difference of the contacts
shall be specified in the enterprise product standards.
5.14.5 Electrical life
Under the specified load conditions, the electrical life of the relay is 10 times or as specified in the enterprise product standards. The test rate is 720 times/h. After the test, the relay shall meet the requirements of 5.5 to 5.8 of this standard and be able to withstand the test values ​​specified in 5.12.2.5 of this standard without insulation breakdown and flashover.
5.15 Mechanical life
The relay should be able to reliably operate and return 10 times when the rated input micro-excitation is applied and the contacts are not loaded. The test rate is 1800 times/m. After that, its performance should meet the requirements of 5.5~5.8, and the relay's operating time is allowed to change by 1.2 times the specified value. 5.16 Vibration resistance
5.16.1 Vibration resistance response
When the relay is in the working position, it should be able to withstand the vibration response test specified in 5.12.4.1 of JB/T9568-2000. The severity level of the test is generally level 1. If there are other special requirements, they shall be specified by the enterprise product standards. During the test, the input excitation is zero, the relay should not malfunction, and the time for the output circuit to change the normal state shall not exceed 100. The input excitation is the rated value, and the release state should not appear. After the test, the relay should not be mechanically damaged, and its performance should still meet the requirements specified in 5.5~5.8. 5.16.2 Vibration Withstand Capability
When the relay is in the working position, it should be able to withstand the vibration endurance test specified in 5.12.4.2 of JB/T9568--2000. The severity level of the test is generally level 1. If there are other special requirements, they shall be specified in the enterprise product standard. During the test, no excitation is applied to the relay. After the test, the relay should not be mechanically damaged, and its performance should still meet the requirements specified in 5.5 to 5.8. 5.17 Impact Withstand Capability
5.17.1 Impact Withstand Response Capability
When the relay is in the working position, it should be able to withstand the impact response test specified in 5.12.5.1 of JB/T9568--2000. The severity level of the test is generally level 1. If there are other special requirements, they shall be specified in the enterprise product standard. During the test, the input excitation is zero and the relay should not malfunction. The time for the output circuit to change the normal state does not exceed 100us. The input excitation is the rated value and the release state should not appear. After the test, the relay should not be mechanically damaged, and its performance should still meet the requirements specified in 5.5~5.8. 5.17.2 Impact endurance
When the relay is in the working position, it should be able to withstand the impact endurance test specified in 5.12.5.2 of JB/T9568-2000. The severity level of the test is generally level 1. If there are other special requirements, they shall be specified by the enterprise product standards. During the test, no excitation is applied to the relay. After the test, the relay should not be mechanically damaged, and its performance should meet the requirements specified in 5.5~5.8. 5.18 Impact Withstand Capacity
The relay shall be able to withstand the impact test specified in 5.12.6 of JB/T9568-2000. The severity level of the test is generally level 1. If there are other special requirements, they shall be specified by the enterprise product standards. During the test, the relay shall not be subjected to excitation, shall not be packaged, and shall not remove any transport limiter. After the test, the relay shall not be mechanically damaged, and its performance shall still meet the requirements specified in 5.5 to 5.8. 5.19 Structural and Appearance Requirements
Specified by the enterprise product standards
5.20 Electrical and Creepage Distance
The electrical clearance between the relay lead terminals shall not be less than 4mm. The creepage distance shall not be less than 6mm. 6 Test Methods
B.1 The test conditions shall comply with the provisions of Chapter 4 of GBT7261-20X00. 6.2 The inspection of structure and appearance shall be carried out in accordance with the methods specified in Chapter 5 of GBT7261-2000. 6.3 Test 5.4, according to the method specified in Chapter 21 of GB/T7261--2000. 6.4 When testing 5.5, according to the method specified in 7.1 of GB/T7261-2000, the test circuit is shown in Figure 1, and the test procedure is shown in Figure 2. During the test, the method of suddenly applying excitation is adopted to observe the action and return status of the relay. 6.5 When testing 5.6, the test circuit is shown in Figures 3 to 4. The wiring or specified by the enterprise product standard. Connect switch S: adjust R1 to make the excitation amount (current or voltage) the rated value, and suddenly apply it to the relay input circuit to make the relay act. Chain test and maintenance electrical appliances
K--action indication, use fast intermediate relay (action time is not less than 10ms): Figure 1 Test wiring diagram of action value and return value Micro-island quantity
Apply such as gradual excitation amount: 1-action value: [1--rated value: MI-return value. Relay working state: 0 - return state: [- - action state Figure 2 Test procedure for action value and return value test JB/r37772002
Electrical appliance
Figure 3 Voltage action, current holding intermediate relay holding value test circuit Tested device
Figure 4 Current action, voltage holding intermediate relay holding value test circuit Close switch S2, adjust R2: Unless otherwise specified, make the excitation amount the specified holding value, use the sudden application method, open switch S1, and observe the working condition of the relay contact circuit 6.6 When testing 5.7, follow the method specified in 8.1.2.1 of GB.T7261-2000. The test wiring is shown in Figure 5 or the current standard of the enterprise product. Adjust the excitation amount to the rated value, operate switch S, reverse from position V to II (sudden application), and measure the action time. 6.7 When testing 5.8, follow the method specified in 8.1.2.2 of GB/T726[-2000. The test wiring is shown in Figure 6 or specified by the enterprise product standard. Set the switch S, to position I, adjust the excitation to the rated value, and the relay is in the operating state. Operate the switch S, from position II to [V, and measure the return time. For the relay that is energized for a long time, the return time is measured after energization for 1 second. 6.8 When testing 5.9, follow the method specified in Chapter 9 of GB/T7261-2000. 6.9 When testing 5.10, follow the method specified in Chapter 10 of GB/T7261-2000. 6.10 When testing 5.11, follow the method specified in Chapters 11 and 12 of GB/T7261-2000. When testing 5.12.1, the method specified in 19.4.2 of GB/T7261-2000 shall be followed. When testing 5.12.2, the method specified in 19.4.1 of GB/T7261-2000 shall be followed. When testing 5.12.3, the method specified in 19.4.3 of GB/7261--2000 shall be followed. When testing 5.16.1, the method specified in 16.2 of GB/T7261-2000 shall be followed. When testing 5.16.2, the method specified in 16.3 of GB/T7261-2000 shall be followed. When testing 5.17.1, the method specified in 17.4 of GB/T7261--2000 shall be followed. When testing 5.17.2, the method specified in 17.5 of GB/T7261-2000 shall be followed. When testing 5.18, the method specified in Chapter 18 of GB/T7261-2000 shall be followed. When testing 5.13, the method specified in Chapter 20 of GB/T7261-2000 shall be followed. When testing 5.14, the method specified in Chapter 23 of GB/TT261-2000 shall be followed. When testing 5.15, the method specified in Chapter 24 of GB/T7251-2000 shall be followed. When testing 5.20, the measurement shall be made with a vernier caliper. JB/T 3777-2002
JB/T 3777-2002
Inspection rules
Specified by the enterprise product standards.
Marking, instruction manual
The enterprise product standard shall be in accordance with the provisions of Chapter 8 of B/T9568-2000. 9Packaging, transportation and storage
The enterprise product standard shall be in accordance with JB/T7828-1995. 10Others
Documents and items supplied with the relay
A quality certification document issued by the quality inspection department; a)
b) A product instruction manual (with terminal wiring diagram): d) Installation accessories supplied in the specified quantity: d) Spare parts and accessories supplied according to the quantity and variety specified in the contract according to the user's requirements. 10.2 Quality Assurance
Unless otherwise specified, if the user fully complies with the transportation, storage, installation and use requirements specified in this standard, product standard and product instruction manual, within two years from the date of shipment, if the relay and its accessories are found to be damaged, the manufacturer shall be responsible for free repair or replacement. 820, use a vernier caliper to measure. JB/T 3777-2002
JB/T 3777-2002
Inspection rules
Specified by the enterprise product standard.
Marking, instruction manual
Specified by the enterprise product standard in accordance with Chapter 8 of B/T9568-2000, 9Packaging, transportation and storage
Specified by the enterprise product standard in accordance with JB/T7828-1995 10Others
Documents and items supplied with the relay
One quality certification document issued by the quality inspection department; a)
b) One product instruction manual (with terminal wiring diagram): ) Installation accessories supplied in the specified quantity: d) Spare parts and spare parts supplied according to the quantity and variety specified in the contract according to the user's requirements. 10.2 Quality Assurance
Unless otherwise specified, if the user fully complies with the transportation, storage, installation and use requirements specified in this standard, product standards and product instructions, the manufacturer will be responsible for free repair or replacement of the relay and its accessories if they are found to be damaged within two years from the date of shipment.20, use a vernier caliper to measure. JB/T 3777-2002
JB/T 3777-2002
Inspection rules
Specified by the enterprise product standard.
Marking, instruction manual
Specified by the enterprise product standard in accordance with Chapter 8 of B/T9568-2000, 9Packaging, transportation and storage
Specified by the enterprise product standard in accordance with JB/T7828-1995 10Others
Documents and items supplied with the relay
One quality certification document issued by the quality inspection department; a)
b) One product instruction manual (with terminal wiring diagram): ) Installation accessories supplied in the specified quantity: d) Spare parts and spare parts supplied according to the quantity and variety specified in the contract according to the user's requirements. 10.2 Quality Assurance
Unless otherwise specified, if the user fully complies with the transportation, storage, installation and use requirements specified in this standard, product standards and product instructions, the manufacturer will be responsible for free repair or replacement of the relay and its accessories if they are found to be damaged within two years from the date of shipment.
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