This specification specifies the detailed requirements of JPK-2 vacuum relays. All requirements are composed of this specification and the valid version of GJB1434-92 "General Specification for Vacuum Relays". This specification applies to vacuum relays with a maximum rated load of 50A, 12kV (peak value) for contacts and a set of changeover contacts. SJ 20050-1992 Detailed Specification for JPK-2 Vacuum Relays SJ20050-1992 Standard Download Decompression Password: www.bzxz.net
This specification specifies the detailed requirements of JPK-2 vacuum relays. All requirements are composed of this specification and the valid version of GJB1434-92 "General Specification for Vacuum Relays". This specification applies to vacuum relays with a maximum rated load of 50A, 12kV (peak value) for contacts and a set of changeover contacts.

FL5945, military standard for electronics industry of the People's Republic of China
SJ20050-92
Detail specificationfor
modelJPK-2vacuumrelays
Published on February 1, 1992
China Electronics Industry Corporation
Implementation on May 1, 1992
1 Scope
1.1 Subject content
Detail specification for
modelJPK-2vacuumrelay, military standard for electronics industry of the People's Republic of China
SJ20050-92
This specification specifies the detailed requirements for JPK-2 vacuum relays. All requirements are composed of the valid versions of this specification and GJB143492 "General Specification for Vacuum Relays". 1.2 Scope of application
This specification applies to a set of changeover contact vacuum relays with a maximum rated load of 50A, 12kV (peak value). 1.3 Structural type, dimensions and classification parameters
1.3.1 Overall dimensions, installation method and dimensions, lead-out terminal type and dimensions, top view circuit diagram The overall dimensions, installation method and dimensions, lead-out terminal type and dimensions and top view circuit diagram are shown in Figure 1. Issued by China Electronics Industry Corporation on February 1, 1992 and implemented on May 1, 1992
41:5
1T-Flange installation
Note, for dimensions not specified, tolerances shall be as per 1T13
SJ20050—92
13/16-32UNS-2
Top view circuit diagram
36*±2
2T-Threaded installation
Figure 1 Overall dimensions, installation method and dimensions, lead-out terminal type and dimensions and top view circuit diagram 2
1.3.2 Coil specifications and parameters
The coil specifications and parameters are as shown in Table 1.
Coil voltage
Direct current
1.3.3 Military part number marking method
SJ20050—92
Table 1 Coil specification parameters
Action voltage
Military part number marking method example is as follows: J1434/S20050-026/1T
2 Reference documents
Release voltage
Installation method code
Coil specifications Serial number
Detailed specification number
Industry military mark
General specification number
Military mark
GB18001804 Tolerance and fit
GB4457~4460 Mechanical drawing
GJB1434-92
3 Requirements
3.1 Contact parameters
General specification for vacuum relays
3.1.1 Contact combination type: 1Z.
3.1.2 Rated current (resistive) (carrying) 50A DC or 50Hz AC effective value.
Over the entire temperature range
Action voltage
Not applicable
Not applicable
Not applicable
Not applicable
Release voltage
Not applicable
Not applicable
Not applicable
Not applicable
Not applicable
Not applicable
Not applicable
30A2.5MHz AC RMS value.
17.5A16MHz AC RMS value.
3.1.3Rated open circuit voltage
12kV50Hz AC peak value.
10kV2.5MHz AC peak value.
8kV16MHz AC peak value.
3.1.4 Contact resistance
Initial value is not more than 0.0120.
Not more than 0.10 in life test.
Maximum value is not more than 0.12.
3.1.5 Contact bounce: not more than 2ms.
3.1.6 Capacitance
Not more than 0.5pF between disconnected contacts.
SJ20050—92
Not more than 1pF between contact and mounting part (housing). 3.2 Coil parameters
3.2.1 Working mode: continuous.
3.2.2 Coil DC resistance, see Table 1.
3.2.3 Coil maximum voltage, see Table 1. wwW.bzxz.Net
3.2.4 Coil rated voltage: see Table 1.
3.2.5 Action voltage: see Table 1.
3.2.6 Release voltage, see Table 1.
3.2.7 Action time: not more than 18ms.
3.2.8 Release time: not more than 9ms.
3.3 Insulation performance
3.3.1 Insulation resistance: not less than 10000M0. 3.3.2 Dielectric withstand voltage: except for the test voltage between the coil and the mounting part (housing) of 500V (50Hz AC effective value), the test voltage is 15kV (DC or 50Hz AC peak value). 3.4 Environmental adaptability performance
3.4.1 Temperature range: -55~125℃.
3.4.2 Moisture resistance: During the 1st to 16th hour of each cycle, a DC voltage of 100V is applied between the coil (positive pole) and the mounting part (housing) (negative pole).
3.4.3 Shock: 294m/s (30g), 11ms, half sine wave. 3.4.4 High frequency vibration: displacement amplitude 0.75mm, 1055Hz; 98m/s (10g), 55500Hz. 3.4.5 Salt spray: test time 96h (A). 3.5 Structural and physical requirements
3.5.1 Weight: not more than 85g.
3.6 Life (mechanical cycle)
The number of cycles is 1000000 times, and the cycle rate is not more than 3600 times/hour. 4 Quality assurance regulations
SJ20050---92
Quality assurance regulations shall comply with Chapter 4 of GJB1434. 5. Delivery preparation
Packaging, transportation and storage shall comply with Chapter 5 of GJB1434. Additional Notes:
This standard was proposed by the Ministry of Machinery and Electronics Industry. This standard was jointly drafted by the State-owned 897 Factory and the China Electronics Technology Standardization Institute. The main drafters of this standard are Mao Qi, Shi Xinyuan, Xu Xiaowen, and Zhang Ying. Project code: S82007.
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