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JB/T 7103-1993 General technical requirements for coils used in relays and their devices
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This standard specifies the technical requirements, test methods and inspection rules for coils used in relays and relay protectio
2024-10-03 category：Machinery Industry Standard (JB)+ View
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JB/T 7102-1993 Protection grade of relay and its device enclosure (IP mark)
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This standard specifies the classification system, test methods and conformity assessment of the enclosure protection of relays an
2024-10-03 category：Machinery Industry Standard (JB)+ View
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JB/T 7101-1993 Metal coating and chemical treatment classification code for relays and their devices
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This standard specifies the composition, representation and requirements of the classification codes and markings of metal coating
2024-10-03 category：Machinery Industry Standard (JB)+ View
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JB/T 7100-1993 Soft mica sheet
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This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage
2024-10-03 category：Machinery Industry Standard (JB)+ View
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JB/T 7099-1993 Shaped mica sheet
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This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage
2024-10-03 category：Machinery Industry Standard (JB)+ View
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JB/T 7098-2002 Technical requirements for copper-chromium electrical contacts
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This standard specifies the requirements, sampling, test methods, marking, labeling and packaging of copper-chromium electrical co
2024-10-03 category：Machinery Industry Standard (JB)+ View
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JB/T 7097-1993 Technical requirements for copper-bismuth-aluminum contact materials
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This standard specifies the basic properties of copper-bismuth-aluminum contact materials (excluding electrical application proper
2024-10-03 category：Machinery Industry Standard (JB)+ View
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JB/T 7096-1993 Technical requirements for copper-bismuth-cerium contact materials
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This standard specifies the basic properties of copper-bismuth-cerium contact materials (excluding electrical application properti
2024-10-03 category：Machinery Industry Standard (JB)+ View
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