Some standard content:
ICS29.120.70
2002-07-16
JB/T37782002
JB/T3778
2002-12-01
This standard is a revision of JB/T3778-1993 "Time Delay Intermediate Relay". Compared with B/T3778-1993, the main changes of this standard are as follows: The referenced standards of this standard adopt the latest version of the standards. JB/T3778-2002
This standard is divided into 10 chapters, and the content of Chapter 4, Chapter 5 and Chapter 6 has been appropriately adjusted in accordance with the provisions of JB/T9568-2000.
-According to the current industry standard JB/T9568-2000, the two items "AC power waveform" and "frequency" are added to the influencing factors and influencing factors in Table 1 and Table 2 of the standard, and a 10℃～50℃ (static type) requirement is added to the ambient temperature in Table 1. The "nominal range of magnetic induction intensity of external magnetic field" in Table 2 of the original standard is changed to "no more than 1.5 watts or as specified by the enterprise product standard" according to the current industry standard T9568-2000. According to the current industry standard JB/T9568-2000, the original standard technical requirement "vibration response capability, impact response capability" in the "output contact change normal state time does not exceed 2 Ⅱ s" is now changed to "output contact change normal state time does not exceed 100 s"
According to the current industry standard JB/T9568-2000+5.13.3.2, the original standard technical requirement "moisture and heat resistance performance" is added with "after the test, the relay should be inspected for appearance after 2 hours of recovery under the standard test conditions". According to the current development of time-delay intermediate relays, 5.20 additional requirements for static relays are added. Chapter 8 of the original standard is divided into Chapters 8 and 9 according to GB/TE.2. Chapter 9 of the original standard is changed to Chapter 10, and according to JB/T9568-2000+5.13.3.2, the original standard technical requirement "moisture and heat resistance performance" is added with "after the test, the relay should be inspected for appearance after 2 hours of recovery under the standard test conditions". According to the current development of time-delay intermediate relays, 5.20 additional requirements for static relays are added. Chapter 8 of the original standard is divided into Chapters 8 and 9 according to GB/TE.2. Chapter 9 of the original standard is changed to Chapter 10, and according to JB/T9568-2000 0.11.1 The quality assurance period of relays is changed from one year as stipulated in the original standard to two years: 1. The contents of Chapter 7 and Chapter 8 of the original standard are respectively "specified by the enterprise product standards" and "specified by the enterprise product standards in accordance with Chapter 8 of B/T9568---2000". Editorial changes have been made to some literary sentences: This standard replaces JB/T3778-1993. 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 Shanghai Relay Co., Ltd. The drafter of this standard: Wang Jiemin. This standard was first issued in 1984 and revised for the first time in 1993. 1. Scope. Time-delay intermediate relay. JB/T3778-2002. tt||This standard specifies the product classification, technical requirements, test methods, inspection rules, markings, instruction manuals, packaging, transportation, storage and other factors of time-delay intermediate relays.
This standard applies to time-delay 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 delay the action time or return time and increase the number of contact pairs, contact capacity or conversion circuit of the previous relay.
This standard applies only to new relays.
2 Normative referenced documents
The clauses in the following documents become clauses of this standard through reference in this standard. For any dated referenced documents, all subsequent amendments (excluding errata) or revised versions are not applicable to this standard. However, agreements reached based on this standard are encouraged. All parties shall study whether the latest versions of these documents can be used. For any undated referenced documents, the latest versions shall apply to this standard. GB/T2900.1-1992 Basic terms for electrical engineering (neq C60050) GB/T2900.17-1994 Electrical engineering terms 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
The terms and definitions established in GB/T2900.1-1992 and GB/T2900.17~-1994 apply to this standard. 4 Product classification
4.1 Type and classification
The relay construction principle is electromagnetic type and static type, and its classification is as follows: 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 structure type: finger-in type and non-insertion type: d) According to the delay method: delayed action and delayed return, 4.2 Model and meaning
The compilation of relay models is in accordance with the provisions of JB10103-1999. 4.3 Rated parameters
a) Rated DC working voltage: 12V24V, 48V110V, 220V: b) Rated DC working current: 0.25A, 0.5A, 1A, 2A, 4A, 6A. 4.4 Variety specifications
Specified by the enterprise product label.
4.5 Overall dimensions and installation dimensions
Specified by enterprise product standards
JB/T 3778---2002
4.6 Measurements
Specified by enterprise product standards
Technical requirements
Baseline values and test tolerances of influencing quantities and influencing factors 5.1
Baseline values and test tolerances of influencing quantities and influencing factors are shown in Table 1 Table 1 Baseline values and test tolerances of influencing quantities and influencing factors Influencing quantities and influencing factors
Ambient temperature
Atmospheric pressure
Relative humidity
Magnetic induction strength of external magnetic field
AC power waveform
AC power factor in DC
Basic value
86kPa--1 06kPa
45%~75%
Vertical installation on the vertical surface perpendicular to the ground plane 0
50Hz(60Hz)
5.2 Standard limit value test tolerance of the nominal range of influencing quantity and influencing factor
±2℃
Any left pre-tilt does not exceed 2°
Any direction does not exceed 0.5mT
Distortion factor is not more than 1%
Not more than 1% of the peak value
The standard push limit values of the nominal range of influencing quantity and influencing factor are shown in Table 2. Within this range, the relay should work reliably. Table 2 Standard limit values of nominal range of influencing quantities and influencing factors Influencing quantities and influencing factors
Ambient temperature
Atmospheric pressure
Relative humidity
Working position
Magnetic induction intensity of external magnetic field
AC power supply waveform
AC component in DC (ripple)
Range of variation of input excitation position
Nominal range
25℃～+40℃ (electromagnetic type), -10℃~+50℃ (static type), the average temperature within 24h does not exceed 35℃80kPa-110kpa
The monthly average maximum relative humidity in the coldest month is 90%, and the monthly average minimum temperature in April of that month is 25, and there is no condensation on the surface. When the maximum temperature is 40℃, the maximum relative humidity shall not exceed 50%, the deviation from the reference position in any direction by 5° 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 rated voltage of the DC power supply is 110V and 220V, it shall be 80%~110% of the rated value, and when it is 48V and below, it shall be 90%~[10% of the rated value
5.3 Other requirements for the place of use
The place of use is not allowed to have vibration response and impact response values exceeding those specified in the enterprise standard: a)
The place of use shall not have explosive dangerous 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 shall have facilities for defense, snow, wind and sand. 5.4 Limit values of the extreme range of ambient temperature
The extreme range of ambient temperature has limits of -25°C and +70°C. Under the limit values, the relay will not be damaged irreversibly without applying excitation. After the temperature returns to normal, the main performance of the relay shall comply with the provisions of 5.5 to 5.7. 5.5 Action value and return value
The action value of the relay is 30% to 70% of the rated voltage. The return value is not less than 3% of the rated voltage. 2
5.6 Holding value
The holding current is not more than 80% of the rated current.
5.7 Action time and return time
5.7.1 Action time
JB/T 37782002
When the rated voltage is applied to the time-delay action relay, its action time shall not be less than 0.06s, 0.11s or as specified by the enterprise product standard. 5.7.2 Return time
After the rated voltage is applied to the time-delay return relay, and then the power is disconnected, its return time shall not be less than 0.4s, 0.5s, 0.8s, 1.1s or as specified by the enterprise product standard.
For relays that are powered on for a long time, the measurement shall be made 1 hour after the power is turned on. 5.8 Power consumption
At the rated value, the power consumption of the relay is specified by the enterprise product standard. 5.9 Influence of ambient temperature changes on the action value When the ambient temperature is the standard limit value of the nominal range specified in Table 2, the action value of the relay shall meet the performance requirements specified in 5.5 of this standard.
5.10 Thermal performance requirements
When the ambient temperature is 40℃, the relay winding should be able to withstand 1.1 times the rated voltage or rated current for a long time without causing thermal damage to the insulation or other components, and the temperature rise of the coil should not exceed 65K. 5.11 Insulation performance
5.11.1 Insulation resistance
The insulation resistance between each circuit of the relay and the exposed non-live metal parts and the outer shell, as well as between the coil circuit and the contact circuit, measured by a test instrument with an open circuit voltage of 500V, should be no less than 300M0. 5.11.2 Dielectric strength
5.11.2.1 The insulation resistance between each circuit of the relay and the exposed non-live metal parts and the outer shell , the working winding and the contact circuit not connected to the holding winding should be able to withstand an AC test voltage of 2kV (effective value) 50Hz for 1min without insulation breakdown or flashover. 5.11.2.2 The non-contact groups (except signal contacts) and the working winding and the holding winding should be able to withstand an AC test voltage of 1kV (effective value) 50Hz for 1min without insulation breakdown or flashover. 5.11.2.3 The same contact group should be able to withstand an AC test voltage of 500V (effective value) 50Hz for 1min without insulation breakdown or flashover.
5.11.2.4 During factory inspection, the test duration is allowed to be shortened. Short to 15: But at this time the test voltage should be increased by 10%, 5.11.2.5 When rechecking the dielectric strength, the test voltage value is 75% of the specified value, 5.11.3 Impact voltage
The relay circuits and the exposed non-live metal parts and the casing should be able to withstand the test voltage with a waveform of the standard lightning 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 5.55.7. During the test, flashovers that do not damage the insulation are allowed. If flashover occurs, the insulation resistance and dielectric strength should be rechecked. The dielectric strength test voltage value is 75% of the specified value. 5.12 Moisture and heat resistance
The relay is tested at a maximum temperature of 40 ℃, after two cycles (48h) of alternating damp heat test. Within 2h before the test is continued, use a test instrument with an open circuit voltage of 500V to measure the insulation resistance at the specified position in 5.11.1, which should be no less than 4M0, and its dielectric strength should be able to withstand the recheck test voltage value specified in 5.11.2.5, without insulation breakdown or flashover. After the test, the relay should be visually inspected after recovering for 21h under standard test atmosphere. 5.13 Contact performance
5.13.1 Contact disconnection capacity
The relay contact should be able to disconnect a DC inductive load with a voltage not greater than 250V and a time constant of (5±0.75)ms or (40±6)ms for 3
JB/T 37782002
Circuit or voltage is not more than 250V AC circuit (cos9=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.
Rated breaking capacity of melting point, maximum current allowed to be broken and long-term allowable closing current Table 3
Contact type
Rated breaking capacity
DC w
Long-term allowable closing current of the contact
AC VA
Long-term allowable closing current is generally selected according to Table 3, 5.13.3 Overload capacity
Maximum current allowed to be broken A
Long-term allowable
Closing current A
Contacts should be able to reliably close and open 1.5 times the rated breaking capacity for 10 times without continuous arcing. If there are special requirements, they should be specified by the enterprise product standards.
5.13.4 Contact time difference
Specified by the enterprise product standard,
5.13.5 Electrical life
Under the specified load conditions, the electrical life of the relay is 10 times or specified by the enterprise product standard, the electrical life test rate is 720 times/h, after which the relay shall meet the requirements of 5.55.7 and be able to withstand the test voltage value specified in 5.11.2.5 (dielectric strength) without insulation breakdown or flashover.
5.14 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 for 10 times or the mechanical life test rate is 1800 times/h specified by the enterprise product standard. After that, its performance should still meet the requirements of 5.5~5.7 and be able to withstand the test voltage value specified in 5.11.2.5 (dielectric strength) without insulation breakdown or flashover. The operating time of the relay is allowed to vary by no more than 0.8 times the specified value. After the mechanical life test, the relay should not have permanent deformation or other damage to the mechanical parts. 5.15 Vibration Withstand Capacity
5.15.1 Vibration Response Withstand Capacity
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 required, the relay should not malfunction, and the time for the output circuit to change the normal state shall not exceed 100\s. 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 5.5~5.7. 5.15.2 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 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 still meet the requirements specified in 5.5 to 5.7. 5.16 Impact Withstand Capability
5.16.1 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 B/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 output circuit to change the normal state shall not exceed 100μS. The input excitation is the rated value, and the release state should not appear. After the test, the relay shall not be mechanically damaged: its performance shall still meet the requirements specified in 5.5 to 5.7. 5.16.2 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 standards. During the test, no excitation 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 to 5.7. 5.17 Collision resistance
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 is not subjected to excitation, is not packaged, and any transport limiter is not removed. After the test, the relay should not be mechanically damaged, and its performance should still meet the requirements specified in 5.5 to 5.7. 5.18 Structural and appearance requirements
Specified by the enterprise product standard.
5.19 Electrical clearance and creepage distance
The electrical clearance between the relay lead terminals should be no less than 4mm. The creepage distance should be no less than 6mn1.5.20 Additional requirements for static relays
5.20.1 Ability to withstand pulse group interference
Static relays should be able to withstand the test of 1MHz and 100kHz attenuated oscillation waves specified in 5.18.1.1 of JB/T9568-2000. The excitation applied to the product during the test and the qualification criteria are specified by the enterprise product standard: 5.20.2 Ability to withstand electrostatic discharge interference
The static relay should be able to withstand the test voltage of the severity level IIIII specified in 5.18.1.2 of JB/T9568-2000: During the test, the excitation amount applied to the product and the qualified criterion shall be specified by the enterprise product standard: 5.20.3 Ability to withstand radiated electromagnetic field interference The static relay should be able to withstand the test field strength of the severity level III specified in 5.18.1.3 of JB/T9568-2000. During the test, the excitation amount applied to the product and the qualified criterion shall be specified by the enterprise product standard, 5.20.4 Ability to withstand fast transient interference
The static relay should be able to withstand the test voltage of the severity level III specified in 5.18.1.4 of JB/T9568-2000. During the test, the excitation amount applied to the product and the qualified criterion shall be specified by the enterprise product standard. 6 Test methods
6.1 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 methods specified in Chapter 5 of GB/T7261-2000. 6.3 When testing 5.4, the method specified in Chapter 21 of GB/T7261-2000 shall be followed. 6.4 When testing 5.5, the method specified in 7.1 of GB/T7261-2000 shall be followed. See Figure 1 for the test circuit and Figure 2 for the test procedure. During the test, the method of suddenly applying the excitation quantity is adopted to observe the action and return status of the relay, 0
Excitation quantity
Source complete circuit
Drum test product
K——Fast intermediate relay for action indication Figure 1 Test wiring diagram of action value and return value
6.5 When testing 5.6, the test circuit is shown in Figure 3 or specified by the enterprise product standard. Turn on switch S, adjust R so that the excitation (current or voltage) is the rated value, and suddenly apply it to the relay input circuit to make the relay operate. Adjust R2, unless otherwise specified, so that the excitation is the specified holding value, and use the method of sudden application, disconnect switch S, and observe the working condition of the relay contact circuit. 6.6 When testing 5.7.1, follow the method specified in 8.1.2.1 of GB/T7261-2000. The test wiring is shown in Figure 4 or specified by the enterprise product standard. Adjust the excitation to the rated value, operate switch S from position IV to reverse quickly (actually apply), and measure the action time. 5
JB/T3778-2002
Relay
Excitation: I
Action value: II-
Rated value: -
Relay working state: 0--Return state: 1-Return value.
Action state,
Figure 2 Test procedure for action value and return value test
Acid test and maintenance appliance
Figure 3 Wiring diagram for holding value test
Support test and maintenance appliance
Note: When measuring the action time, the yin winding should be short-circuited. Figure 4 Wiring diagram for action time test
6.7 When testing 5.7.2, follow the method specified in 8.1.2.2 of GB/T7261-2000. The test wiring is shown in Figure 5 or specified by the enterprise product standard. Put the switch S in position I, adjust the excitation to the rated value, operate the switch S from position I to position V, and measure the return time. 6.8 When testing 5.8, the method specified in Chapter 9 of GB/T 7261-2000 shall be followed. 6
6.9 When testing 5.10, the method specified in Chapter 10 of GB/T7261-2000 shall be followed. 6.10 When testing 5.9, the method specified in Chapters 11 and 12 of GBT7261-2000 shall be followed. Energy tester
Figure 5 Wiring diagram for return time test
When testing 5.11.1, the method specified in 19.4.2 of GB/T7261-2000 shall be followed. When testing 5.11.2, the method specified in 19.4.1 of GB/T7261-2000 shall be followed. When testing 5.11.3, the method specified in 19.4.3 of GB/T7261-2000 shall be followed. When testing 5.15.1, the method specified in 16.2 of GB/T7261-2000 shall be followed. When testing 5.15.2, the method specified in 16.3 of GB/T7261-2000 shall be followed. When testing 5.16.1, the method specified in 17.4 of GB/T7261-2000 shall be followed. When testing 5.16.2, the method specified in 17.5 of GB/T7261-2000 shall be followed. When testing 5.17, the method specified in Chapter 18 of GB/T7261-2000 shall be followed. 6.18
When testing 5.12, the method specified in Chapter 20 of GB/T7261-2000 shall be followed. 6.19
When testing 5.13, the method specified in Chapter 23 of GB/T7261-2000 shall be followed. When testing 5.14, the method specified in Chapter 24 of GB/T7261-2000 shall be followed. When testing 5.19, the measurement shall be carried out with a vernier caliper. When testing 5.20.1, the method specified in 25.1 of GB/T7261-2000 shall be followed. When testing 5.20.2, the method specified in 25.2 of GB/T7261-2000 shall be followed. When testing 5.20.3, the method specified in 25.3 of GB/T7261-2000 shall be followed. 6.25
6.26 When testing 5.20.4, the method specified in 25.4 of GB/T7261--2000 shall be followed. 7
Inspection rules
shall be specified by the enterprise product standards.
8 Marking and instruction manual
The enterprise product standard shall be stipulated in accordance with Chapter 8 of JB/T9568-2000. 9 Packaging, transportation and storage
The enterprise product standard shall be stipulated in accordance with JB/T7828-1995. JB/T 3778-2002
JB/T37782002
10 Others
Documents and items supplied with the relay
a) One copy of the quality certification document issued by the quality and inspection department; b) One copy of the product instruction manual (with terminal wiring diagram); Installation accessories supplied in the specified quantity;
Spare parts and accessories supplied in the quantity and variety specified in the contract according to the user's requirements. d
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 any damage to the relay and its accessories within two years from the date of shipment.1. Test wiring is shown in Figure 4 or specified by the enterprise product standard. Adjust the excitation to the rated value, operate the switch S from position IV to the reverse position (actually apply), and measure the action time. 5
JB/T3778—2002Www.bzxZ.net
Relay
Excitation: I
Action value: II-
Rated value:-
Relay working state: 0—-Return state: 1-Return value.
Action state,
Figure 2 Test procedure for action value and return value test o
Acid test maintenance electrical appliance
Figure 3 Wiring diagram for holding value test
Support test maintenance electrical appliance
Note: When measuring the action time, the Yin Ni winding should be short-circuited. Figure 4 Wiring diagram for action time test
6.7 When testing 5.7.2, proceed according to the method specified in 8.1.2.2 of GB/T7261-2000. The test wiring is shown in Figure 5 or specified by the enterprise product standard. Set switch S to position I, adjust the excitation to the rated value, operate switch S from position I to position V, and measure the return time. 6.8 When testing 5.8, proceed according to the method specified in Chapter 9 of GB/T 7261-2000 6
6.9 When testing 5.10, proceed according to the method specified in Chapter 10 of GB/T7261-2000 6.10 When testing 5.9, proceed according to the method specified in Chapters 11 and 12 of GBT7261-2000. Energy tester
Figure 5 Return time test wiring diagram
When testing 5.11.1, follow the method specified in 19.4.2 of GB/T7261-2000. When testing 5.11.2, follow the method specified in 19.4.1 of GB/T7261-2000. When testing 5.11.3, follow the method specified in 19.4.3 of GB/T7261-2000. When testing 5.15.1, follow the method specified in 16.2 of GB/T7261-2000. When testing 5.15.2: follow the method specified in 16.3 of GB/T7261-2000. When testing 5.16.1, the method specified in 17.4 of GB/T7261-2000 shall be followed. When testing 5.16.2, the method specified in 17.5 of GB/T7261-2000 shall be followed. When testing 5.17, the method specified in Chapter 18 of GB/T7261-2000 shall be followed. 6.18
When testing 5.12, the method specified in Chapter 20 of GB/T7261-2000 shall be followed. 6.19
When testing 5.13, the method specified in Chapter 23 of GB/T7261-2000 shall be followed. When testing 5.14, the method specified in Chapter 24 of GB/T7261-2000 shall be followed. When testing 5.19, the measurement shall be made with a vernier caliper. When testing 5.20.1, the method specified in 25.1 of GB/T7261-2000 shall be followed. When testing 5.20.2, the method specified in 25.2 of GB/T7261-2000 shall be followed. When testing 5.20.3, the method specified in 25.3 of GB/T7261-2000 shall be followed. 6.25
6.26 When testing 5.20.4, the method specified in 25.4 of GB/T7261--2000 shall be followed. 7
Inspection rules
shall be specified by the enterprise product standards.
8Marking and instruction manual
shall be specified by the enterprise product standards in accordance with Chapter 8 of JB/T9568-2000. 9 Packaging, transportation and storage
The enterprise product standard shall make provisions according to JB/T7828-1995. JB/T 3778-2002
JB/T37782002
10 Others
Documents and items supplied with the relay
a) One quality certification document issued by the quality and inspection department: b) One product instruction manual (with terminal wiring diagram); Installation accessories supplied in the specified quantity:
Spare parts and accessories supplied in the quantity and variety specified in the contract according to the user's requirements. d
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 instruction manual, the manufacturer shall be responsible for free repair or replacement within two years from the date of shipment if the relay and its accessories are found to be damaged.81. Test wiring is shown in Figure 4 or specified by the enterprise product standard. Adjust the excitation to the rated value, operate the switch S from position IV to the reverse position (actually apply), and measure the action time. 5
JB/T3778—2002
Relay
Excitation: I
Action value: II-
Rated value:-
Relay working state: 0—-Return state: 1-Return value.
Action state,
Figure 2 Test procedure for action value and return value test o
Acid test maintenance electrical appliance
Figure 3 Wiring diagram for holding value test
Support test maintenance electrical appliance
Note: When measuring the action time, the Yin Ni winding should be short-circuited. Figure 4 Wiring diagram for action time test
6.7 When testing 5.7.2, proceed according to the method specified in 8.1.2.2 of GB/T7261-2000. The test wiring is shown in Figure 5 or specified by the enterprise product standard. Set switch S to position I, adjust the excitation to the rated value, operate switch S from position I to position V, and measure the return time. 6.8 When testing 5.8, proceed according to the method specified in Chapter 9 of GB/T 7261-2000 6
6.9 When testing 5.10, proceed according to the method specified in Chapter 10 of GB/T7261-2000 6.10 When testing 5.9, proceed according to the method specified in Chapters 11 and 12 of GBT7261-2000. Energy tester
Figure 5 Return time test wiring diagram
When testing 5.11.1, follow the method specified in 19.4.2 of GB/T7261-2000. When testing 5.11.2, follow the method specified in 19.4.1 of GB/T7261-2000. When testing 5.11.3, follow the method specified in 19.4.3 of GB/T7261-2000. When testing 5.15.1, follow the method specified in 16.2 of GB/T7261-2000. When testing 5.15.2: follow the method specified in 16.3 of GB/T7261-2000. When testing 5.16.1, the method specified in 17.4 of GB/T7261-2000 shall be followed. When testing 5.16.2, the method specified in 17.5 of GB/T7261-2000 shall be followed. When testing 5.17, the method specified in Chapter 18 of GB/T7261-2000 shall be followed. 6.18
When testing 5.12, the method specified in Chapter 20 of GB/T7261-2000 shall be followed. 6.19
When testing 5.13, the method specified in Chapter 23 of GB/T7261-2000 shall be followed. When testing 5.14, the method specified in Chapter 24 of GB/T7261-2000 shall be followed. When testing 5.19, the measurement shall be made with a vernier caliper. When testing 5.20.1, the method specified in 25.1 of GB/T7261-2000 shall be followed. When testing 5.20.2, the method specified in 25.2 of GB/T7261-2000 shall be followed. When testing 5.20.3, the method specified in 25.3 of GB/T7261-2000 shall be followed. 6.25
6.26 When testing 5.20.4, the method specified in 25.4 of GB/T7261--2000 shall be followed. 7
Inspection rules
shall be specified by the enterprise product standards.
8Marking and instruction manual
shall be specified by the enterprise product standards in accordance with Chapter 8 of JB/T9568-2000. 9 Packaging, transportation and storage
The enterprise product standard shall make provisions according to JB/T7828-1995. JB/T 3778-2002
JB/T37782002
10 Others
Documents and items supplied with the relay
a) One quality certification document issued by the quality and inspection department: b) One product instruction manual (with terminal wiring diagram); Installation accessories supplied in the specified quantity:
Spare parts and accessories supplied in the quantity and variety specified in the contract according to the user's requirements. d
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 instruction manual, the manufacturer shall be responsible for free repair or replacement within two years from the date of shipment if the relay and its accessories are found to be damaged.8
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