JB/T 3779-2002 Fast intermediate relay

This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, instruction manual, packaging, transportation and storage of fast intermediate relays. JB/T 3779-2002 Fast intermediate relays JB/T3779-2002 Standard download decompression password: www.bzxz.net

ICS29.120.70
2002-07-16
JB/T 3779—2002
JB/T3779
2002-12-01
JB/T3779—2002
This standard is a revision of B/T3779—1993 (Fast Intermediate Relay). This standard is divided into 10 chapters, and the contents of Chapter 4, Chapter 5 and Chapter 6 have been appropriately adjusted in accordance with the provisions of JB 9568-2000. This standard replaces JB/T3779-1993.
This standard is proposed by China Machinery Industry Federation. This standard is under the jurisdiction of National Technical Committee for Measuring Relays and Protection Equipment. This standard is drafted by Shanghai Relay Co., Ltd. Drafting person of this standard: Wang Jiemin:
This standard was first issued in 1984 and revised for the first time in 1993. I
1 Scope
Fast intermediate relay
JB/T 37792002
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, instruction manual, packaging, transportation and storage of fast intermediate relays.
This standard applies to fast intermediate relays (hereinafter referred to as relays) used in the secondary circuits of power systems. 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: suitable for use as a tripping relay:
This standard is only applicable to new relays
2 Normative references
The clauses in the following documents become clauses of this standard through reference in this standard. Any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties to 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, its latest version applies to this standard. GB/T2900.1—1992 Basic terms of electrical terminology (neg positive C 60050) GB/T2900.17:—1994 Electrical terminology 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 Method for compiling product models of relays and devices 3 Terms and definitions
GB/T2900.1— The terms and definitions established in GB/T 1992 and GB/T 2900.17-1994 apply to this standard. 4 Product classification
4.1 Type and classification
The structure and principle of the relay are electromagnetic type, which can be classified into: a) According to the installation method: protruding type and connected 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 models shall comply with the provisions of JB/T 10103-1999. 4.3 Rated parameters
a) Rated DC working voltage: 6V, 12V, 24V, 48V, 110V, 220V; b) Rated DC working current: 0.25A, 0.5V, 1A2A, 4A, 8A; c) Rated holding voltage value: 6V, 12V, 24V, 48V, 110V, 22DV; d) Rated holding current value: 0.25A, 0.5A, 1A, 2A, 4A, 8A. 4.4 Variety specifications
Specified by the enterprise product standards.
JE/T3779--2002
4.5 Overall dimensions and installation dimensions
Specified by the enterprise product standards.
4.6 Weight
Specified by the enterprise product standards.
Technical requirements
Benchmark values ​​and test tolerances of influencing quantities and influencing factors 5.1
Benchmark values ​​and test tolerances of influencing quantities and influencing factors are shown in the table! Table 1 Benchmark values ​​and test tolerances of influencing quantities and influencing factors Influencing quantities and influencing factors
Ambient temperature
Atmospheric pressure
Relative humidity
Magnetic induction intensity of external magnetic field
AC power waveform
AC power supply in the current
Benchmark value
86kPu~-106kPa
45%~75%
Vertically installed on a vertical surface perpendicular to the ground plane 0||tt| |S0Hz(60Hz)
Standard limit values ​​of the nominal range of influencing quantity and influencing factors 5.2
Test tolerance
±2℃
Any skew does not exceed 2"
Any direction does not exceed 0.5mT
Distortion factor is not greater than 1%www.bzxz.net
Not greater than 1% of the drop value
The standard limit values ​​of the nominal range of influencing quantity and influencing factors are shown in Table 2. Within this range, the relay should work reliably. Table 2 Influence Influence and influencing factors Standard limit values ​​of nominal range Influence and influencing factors
Ambient temperature
Atmospheric pressure
Relative humidity
Working position
Magnetic induction intensity of external magnetic field
AC power waveform
AC component (ripple) in DC
Variation range of input excitation
5.9 Other requirements for the place of use
Nominal range
—25℃ --40℃, the average temperature within 24h does not exceed 35'℃80xPa--110kPa
The average maximum relative humidity of the wettest month is 90%, and the average minimum temperature of the month is 25℃, with no condensation on the surface. When the highest temperature is 40℃, the average maximum relative humidity does not exceed 50%. The deviation from the reference position in any direction of 5°
does not exceed 1.5mT or the distortion factor specified by the enterprise product standard is not more than 5%
50Hx±1Hz, 60Hz±1.2Hz
Not more than 12% of the DC rated value
When the rated voltage of the DC power supply is 110V and 220V, it is 80% of the rated value. When it is 48V and below, it is 90% of the rated value.~[10%
The place of use is not allowed to have vibration response and impact response exceeding the enterprise standard. The place of use shall not have explosive media, and the surrounding medium shall 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 mold. The place of use should have facilities to prevent rain, snow, wind and sand. 5.4 Limit values ​​of extreme range of ambient temperature
The limit values ​​of extreme range of ambient temperature are -25℃ and +70℃. The relay without excitation at the limit value will not suffer irreversible damage. After the temperature returns to normal, the main performance of the relay shall comply with the provisions of 5.5~5.8. 2
5.5 Action value
JB/T 37792002
The operating voltage of voltage type relay is 50%-70% of the rated voltage value. The operating current of current type relay is not more than 80% of the rated current value.
5.6 Holding value
For relays with self-holding winding, the holding voltage is not more than 70% of the rated holding value. For relays with only current holding winding, the holding current is not more than 80% of the rated holding value.
5.7 Return value
The return value of the relay is not less than 5% of the rated value or as specified by the enterprise product standard according to special needs. 5.8 Action time
When the input excitation of the working winding is the rated value, the action time of the relay shall be specified in the enterprise product standard, and generally should not exceed 15ms:
5.9 Power dissipation
At 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 can withstand 1.1 times the rated value for a long time without causing thermal damage to the insulation or other components, and the maximum temperature of the coil shall not exceed 105℃. 5.10.2 When the ambient temperature is 40°C, for a relay with one voltage working winding and one or three current holding windings, when there is no current flowing in the holding winding, the voltage winding of the relay shall be able to withstand 1.1 times the rated holding voltage for a long time, and the maximum temperature of the coil shall not exceed 105°C. The holding winding is allowed to withstand 3 times the rated holding current for 5 seconds without insulation loss. 5.10.3 When the ambient temperature is 40°C, for a relay with one current working winding and one voltage holding winding, when there is no excitation in the voltage holding winding, the current winding shall be able to withstand 3 times the rated current for 5 seconds without insulation loss. The holding winding shall be able to withstand 1.1 times the rated holding voltage for a long time, and the maximum temperature of the coil shall not exceed 105°C.1 times the rated holding voltage, the maximum temperature of the coil shall not exceed 105℃. 5.10.4 For heating components such as resistors that are powered on for a long time, the surface temperature shall not exceed 150℃, and no harmful thermal effects shall be produced on adjacent components.
5.11 Effect of ambient humidity changes on performance When the ambient temperature is the standard limit value of the nominal range specified in Table 2, the action value of the relay shall comply with the provisions of 5.5 of this standard, and the relay shall operate reliably.
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 casing, and between the coil circuit and the contact circuit (without holding winding) shall be no less than 300MQ when measured by a test instrument with an open circuit voltage of 500V. 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 casing, and between the working group and the contact circuit without holding winding shall be able to withstand an AC test voltage of 2kV (effective value) 50Hz for 1min without any insulation breakdown or flashover. 5.12.2.2 Between uninterrupted contact groups (except signal contacts) and between windings: They should be able to withstand an AC test voltage of 1 kV (effective value) 50 Hz for 1 min without any insulation breakdown or flashover. 5.12.2.3 Between the same contact group, they should be able to withstand an AC test voltage of 500 V (effective value) 50 Hz for 1 min without any insulation breakdown or flashover.
5.12.2.4 During factory inspection, the test duration is allowed to be shortened to Is, but the test voltage should be increased by 10% at this time. 5.12.2.5 When rechecking the dielectric strength, the test voltage value is 75% of the specified value. 5.12.3 Current Surge Voltage
The relay service circuit and the exposed non-live metal parts and the casing should be able to withstand the test voltage with a waveform of standard lightning wave and an amplitude of 5V, 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 cause insulation damage is allowed. If flashover occurs, the insulation resistance and dielectric strength should be rechecked. The dielectric strength test voltage value is 5% of the specified value. 5.13 Moisture and Heat Resistance
The relay is subjected to two cycles (48h) of alternating damp heat test at a maximum temperature of 40℃. Within 2 hours before the end of the test, use a test instrument with an open circuit voltage of 500V to measure the insulation resistance at the specified position in 5.12.1. It should not be less than 4M2: its dielectric strength should be able to withstand the recheck test voltage value specified in 5.12.2.5, without insulation breakdown or flashover. After the test, the relay should be inspected for appearance after being restored to the standard test atmosphere for 2 hours. 5.14 Contact performance
5.14.1 Contact disconnection capacity
The relay contact should be able to disconnect a DC inductive load circuit with a voltage not exceeding 1250V and a time constant of (50.75)tms or (40±6)ts or an AC circuit with a voltage not exceeding 250V (c08 single = 0.4±0.1). Under the rated breaking capacity of the contact, the maximum current allowed for the contact to be broken is generally selected according to Table 3:
Table 3 Rated breaking capacity of the contact, the maximum current allowed to be broken and the long-term allowable closing current Contact type
Rated breaking capacity
5.14.2 Long-term allowable closing current of the contact AC YA
Long-term allowable closing current A
The contact should be able to reliably close and open 1.5 times the rated breaking capacity 10 up, without continuous current, if there are special requirements, the stress enterprise product standard provisions,
5.14.4 The contact time difference of the contact
shall be specified by the enterprise product standard.
5.14.5 Electrical life
Under the specified load conditions, the electrical life of the relay is 10 times or as specified by the enterprise product standards. The electrical life test rate is 1800 times/m. After that, the main performance of the relay meets the requirements of 5.5-5.8: and can withstand the test voltage value specified in 5.12.2.5, without insulation breakdown or flashover.
5.15 Mechanical life
Apply the rated input excitation to the relay, the contacts are not loaded, and it should be able to operate and return reliably 5×1 times or as specified by the enterprise product standards. The mechanical life test rate is 3600 times/m. After that, its performance should still meet the requirements of 5.5-~5.8. The operating time of the relay is allowed to vary by 1.2 times the specified value.
After the mechanical life test, the relay should not have permanent deformation or other damage to its mechanical parts. 5.16 Ability to withstand vibration
5.16.1 Ability to withstand vibration 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 1CDu5. The auxiliary input excitation is the rated value. There should be no release state. 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 Endurance 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 BT9568-2000. 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 still meet the requirements specified in 5.5~5.8. 5.17 Impact Withstand Capability
5.17.1 Impact 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 by the enterprise product standards. During the test, the input excitation is zero and the relay should not malfunction. The time for the input circuit to change to the normal state shall not exceed 100s. The input excitation is the rated value, and the release state shall not appear. After the test: The relay shall not be mechanically damaged, and its performance shall still meet the requirements specified in 5.5~5.8. 5.17.2 Impact endurance
When the relay is in the working position, it shall 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 label. During the test, no excitation crown is applied to the relay. After the test, the relay shall not be mechanically damaged, and its performance shall still 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 JB/T9568-200015.12.6. The severity level of the test is generally level 1. If there are other special requirements, they shall be specified by the enterprise product standard: During the test, the relay shall not be subjected to excitation, packaging, or any transportation limiter. After the test, the relay shall not be mechanically damaged, and its performance shall still meet the requirements specified in 5.5~5.8. 5.19 Structural and Appearance Requirements
Specified in the enterprise product standard.
5.20 Electrical Clearance 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 Method
6.1 The test conditions shall comply with the provisions of Chapter 4 of GB/T7261-2000. 6.2 The inspection of structure and appearance shall be carried out in accordance with the method specified in Chapter 5 of GB/T7261-2000. 6.3 When testing 5.4, it shall be carried out in accordance with the method specified in Chapter 21 of GB7261-2000. 6.4 When testing 5.5 and 5.7, it shall be carried out in accordance with 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 the excitation quantity is adopted to observe the action and return status of the relay. Quantity
Adjust the circuit
Tested product
A fast intermediate relay for action indication (action time is not more than 10ms). Figure 1 Wiring diagram for action value and return value test
Micro-precipitation
Relay
Applied excitation: ——Action value: JI——Rated value: I—Return value, relay working state: (F
Return state: 1-
Action state
Figure 2 Action value and return value test procedure
JB/T3779—2002
6.5 When testing 5.6, the test circuit is shown in Figures 3 to 4 or as specified by the enterprise product standards. Turn on switch S1, adjust H, make the excitation (current or voltage) the rated value, and suddenly apply it to the relay input circuit to make the relay operate. Turn on switch S, adjust R, and unless otherwise specified, make the excitation the specified holding value, and use the method of sudden application, disconnect switch S: observe the operation of the relay contact circuit o
Tested maintenance device
Figure 3 Voltage action, current holding intermediate relay holding value test circuit Relay device
Figure 4 Current action, voltage holding intermediate relay holding value test circuit 6.6 When testing 5.8, follow the method specified in 8.1.2.1 of GB/T7261-2000. The test wiring is shown in Figures 5-6 or as specified by the enterprise product standards. Adjust the excitation to the rated value: operate switch S, from vertical V to I (sudden application); measure the operation time. 6.7 When testing 5.9, the method specified in Chapter 9 of GB/T7261-2000 shall be followed. When testing 5.10, the method specified in Chapter 10 of GB/T7261-2000 shall be followed. 6.8
When testing 5.11, the method specified in Chapters 11 and 12 of GB/I7261-2000 shall be followed. 6.10
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/T7251-2000 shall be followed. When testing 5.12.3, the method specified in 19.4.3 of GB/T7261-2000 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 GB7261-2000 shall be followed. 6.17
Tested electrical appliance
Figure 5 Current type intermediate relay operation time test circuit Tested port
Figure 6 Voltage type intermediate relay operation time test circuit 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/T7261--2000 shall be followed. When testing 5.15, the test shall be carried out in accordance with the provisions of Chapter 24 of GB/T7261-2000. When testing 5.20, the test shall be measured with a vernier caliper. Inspection rules
Specified by the enterprise product standards.
8Marking and instruction manual
Specified by the enterprise product standards in accordance with Chapter 8 of JB/T9568-2000. 9Packaging, transportation and storage
Specified by the enterprise product standards in accordance with JB/T7828-[995oo
JB/T 3779-2002
JB/T3779-2002
10Others
10.1Documents and items supplied with the relaya)
One copy of the quality certification document issued by the quality inspection department: b) One copy of the product instruction manual (with terminal wiring diagram) c) 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 standards and product instructions, 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.
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