• Your shopping cart is empty!

  • IEC 61643-21 Ed. 1.0 b:2000

IEC 61643-21 Ed. 1.0 b:2000

Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods

International Electrotechnical Commission, 09/29/2000

Publisher: IEC

File Format: PDF

$183.00$367.00


Published:29/09/2000

Pages:111

File Size:1 file , 760 KB

Note:This product is unavailable in Ukraine, Russia, Belarus

Is applicable to devices for surge protection of telecommunications and signalling 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 signalling networks with nominal system voltags up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c. The contents of the corrigendum of March 2001 have been included in this copy.

More IEC standard pdf

IEC 60744 Ed. 1.0 b:1983

IEC 60744 Ed. 1.0 b:1983

Safety logic assemblies of nuclear power plants - Characteristics and test methods

$41.00 $82.00

IEC 60115-6-2 Ed. 1.0 b:1983

IEC 60115-6-2 Ed. 1.0 b:1983

Fixed resistors for use in electronic equipment. Part 6: Blank detail specification: Fixed resistor networks with individually measurable resistors, of either resistance values or rated dissipations. Assessment level E

$31.00 $62.00

IEC 60768 Ed. 1.0 b:1983

IEC 60768 Ed. 1.0 b:1983

Process stream radiation monitoring equipment in light water nuclear reactors for normal operating and incident conditions

$25.00 $51.00

IEC 60775 Ed. 1.0 b:1983

IEC 60775 Ed. 1.0 b:1983

Real-time BASIC for CAMAC

$58.00 $117.00