IEC 61643-21 Testing
Low voltage surge protective devices – Part 21: Surge protective devices connected to telecommunications and signaling networks – Performance requirements and testing methods
IEC 61643-21 Scope:
IEC 61643 21 and EN 61643 21 testing is applicable to devices for surge protection of telecommunications and signaling networks against indirect and direct effects of lightning or other transient overvoltages. The purpose of these SPDs is to protect modern electronic equipment connected to telecommunications and signaling networks with nominal system voltages up to 1000 V (r.m.s.) A.C. and 1500 V D.C.
Keystone Compliance assists manufacturers with IEC 61643-21 and EN 61643-21 test compliance. Please contact us for more information on how Keystone Compliance can assist you with identifying and fulfilling your IEC 61643-21 test lab needs.
IEC 61643-11 Surge protective devices connected to low-voltage power systems – Requirements and test methods
IEC 61643-12 Surge protective devices connected to low-voltage power distribution systems – Selection and application principles
IEC 61643-22 Surge protective devices connected to telecommunications and signaling networks – Selection and application principles
IEC 61643-311 Performance requirements and test circuits for gas discharge tubes (GDT)
IEC 61643-312 Selection and application principles for gas discharge tubes
IEC 61643-321 Specifications for avalanche breakdown diode (ABD)
IEC 61643-331 Specification for metal oxide varistors (MOV)
IEC 61643-341 Specification for thyristor surge suppressors (TSS)