This standard specifies the main characteristics of the life test equipment for electrical relay contacts. This standard applies to the life test equipment for electrical relay contacts specified in the electrical relay series standards. GB/T 14598.5-1993 Electrical relays Part 15: Characteristics of life test equipment for electrical relay contacts GB/T14598.5-1993 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Electrical relays
Part 15, Endurance tests For electrical relay contacts-Specificatfon for the characteristics of test equipmentGB/T14598.5—93
IEC255-15(1981)
Part 15: This standard for electrical relay contacts is equivalent to the International Electrotechnical Commission standard IEC255-15 & Characteristics of electrical relay test equipment (1981 edition). Life test—
1 General
1.1 Subject content and scope of application
This standard specifies the main characteristics of electrical relay contact life test equipment. This standard applies to electrical relay contact life test equipment specified in the electrical relay series standards. 1.2 Functional block diagram
The functional block diagram of the complete life test equipment is shown in Figure 1: Detection strategywww.bzxz.net
Include single peak current exhaustion
2 Terms and definitions
Cut-out condition
Electrical device
Test potential range
Sugar test melting point
Control independent
Figure 1 Functional block diagram of the complete life test equipment General position
Power supply
In addition to the common terms specified in GB2900.17 "Electrical Terminology Electrical Relays" and other parts of the electrical relay series standards, the following terms and definitions are also used.
2.1 Input energizing power sources sources for input energizing quantities The power supply for relay input excitation, which includes a stabilizing device including safety devices (such as fuses, etc.) to stabilize the power supply voltage and impedance within a given range.
Approved by the State Administration of Technical Supervision on September 5, 1993 and implemented on April 1, 1994
2.2 Switching device
GB/T 14598.5-93
A device that can complete the various switching functions required in the test cycle, including the connection line connecting the tested relay, the isolator (such as a diode) and the current indicator in the relay coil circuit, and can change the wiring polarity of the bistable relay. 2, 3 Output load power supply soureenfar qutwutquantities Load feeding power supply, including a stabilizing device including a safety device (such as a fuse, etc.) to stabilize the power supply voltage and impedance within a given range.
2.4 Control device control device
A device that generates instructions to execute a specified test sequence to control synchronization and operating procedures (such as starting, measuring, stopping). Note: In practice, the switching device (Article 2.2) and the control device can be combined into a whole, that is, a program control device. 2.5 Measuring and indicating device A device that indicates and detects failures, measures and possibly records the test results. Note: (D) The contents of the record may include:
sample specifications,
test date;
number of cycles or test time;
type and number of failures, signals that may stop the switching device, number of cycles before failure,
limit value, average value, etc. of the test
number of failures of the test equipment.
② Detailed specifications may specify that the data recorded be completed by counters, computers, paper (magnetic) tapes, etc. 3 Scope of application of equipment
The test equipment should be applicable to contact loads of one or more preferred values. The preferred values ​​of contact load are specified in the first and third chapters of GB/T14598.4 electrical relay Part 14: Life test of electrical relay contacts - preferred values ​​of contact load. 4 Environmental conditions
The test equipment should be able to work within the following environmental conditions: ambient temperature 15~35℃,
atmospheric pressure 86~106kPal
relative humidity 45%~~75%.
5 Input circuit requirements
5.1 Input excitation power supply and switching device
The input excitation power supply should be able to supply the rated value of the excitation quantity, and its allowable deviation should comply with the provisions of the blank detailed specification. The switching device should be able to control the rated value of the excitation without affecting the specified allowable deviation. 5.1.1 The rated voltage value should be selected from the values ​​specified in Article 3.1.1 of GB/T14598.2 "Electrical relays with or without electrical relays".
The power supply voltage and its polarity (when required) should be able to be controlled from the outside. 5.1.2 The number of cycles per hour shall be selected from the values ​​specified in Article 3.5.1 of GB/T145982. 5.1.3 The envelope of the input voltage shall be rectangular (practically without bounce). Unless otherwise specified in the detailed specifications for the tested contacts, the load ratio shall be 50%.
5.2 Connection method of relay and test coil When several relays are excited at the same time, parallel connection is recommended. If necessary, an isolator (such as a diode) may be provided. However, when the relay is scheduled to operate at a higher current and lower voltage, if necessary, several coils may be excited in series with a resistor of appropriate resistance.
6 Output circuit requirements
GB/T 14598. 5-93
6.1 Output load power supply
The power supply voltage value shall be selected from the rated voltage values ​​specified in Chapter 3 of GB/T14598.1 "Electrical relays - Contact performance of electrical relays".
Requirements for the allowable deviation of the power supply voltage and the power supply impedance and resistance shall comply with the provisions of Article 1.2.2 of GB/T11598.4. 6.2 Connection method between resistive load and contact For resistive loads or loads composed of resistive elements of application category 0 and 1 contacts, the capacitance between the two ends of the resistor (including the lead) shall be less than 50 F.
Requirements for detection device
7.1 Detection interval
The failures displayed and recorded by the detection device shall be selected from Article 4.4 of GB/T14598.1 and specified by the detailed specification. When the cumulative number of failures is displayed at intervals, the test of the corresponding parameters shall be carried out after the completion of the following recommended number of cycles. 0;1×10\3×10\, #=3,4,5,6,7.8,-.; and at the end of life. For some failure types, the detection device can display and record after each cycle. When a specific type of failure occurs, the test equipment shall automatically interrupt the input and output circuits. 7.2 Minimum interruption time
The interruption (bounce, etc.) values ​​specified in the detailed specification shall not be taken into account (i.e. not displayed or recorded), for example, 10 μs for Class 0 and Class 1 contacts and 1 ms for Class 2 and Class 3 contacts. 8 Requirements for control devices
8.1 Waveforms
The waveforms representing the excitation of the test relay, the connection of the test relay to the measuring circuit and the failure monitoring cycle are shown in Figure 2. For AC relays, the test cycle should not be synchronized with the power supply frequency unless such synchronization does not lead to erroneous test results. 8.2
Safety alarms
Input A
The safety alarm device shall be able to display:
Excessive temperature rise:
Voltage exceeding the specified limit value:
Failure of the auxiliary input power supply:
Failure of data storage.
9 Reliability
GB/T14598.5—93
Input B
The design of the control device should ensure that its own failure will not affect the test results. Additional remarks:
This standard was proposed by the Ministry of Electronics Industry of the People's Republic of China. 0n%
—Conditional state
Stimulation of the test device
A single night new
Auxiliary quantity strategy and the connection of the test
Marriage device
Failure monitoring and period
This standard is under the jurisdiction of the National Technical Committee for Standardization of Maintenance Devices, Relay Protection and Automatic Devices. This standard was drafted by the State-owned Qunli Radio Equipment Factory and the Electronic Standardization Institute of the Ministry of Electronics Industry. The main drafters of this standard are Wu Shuzhi, Shi Xinyuan, Zhang Weizhong, Zhou Shixian and Yuan Chang.
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