33.040.30 Switching and signalling systems

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Released: 2004-11-25
BS EN 50065-4-6:2004
Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz Low voltage decoupling filters. Phase coupler
LANGUAGE
English
immediate download
Released: 2008-01-31
BS EN 50065-4-7:2005
Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz and 1,6 MHz to 30 MHz Portable low voltage decoupling filters. Safety requirements
LANGUAGE
English
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Released: 2002-04-10
BS EN 50065-7:2001
Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148.5 kHz Equipment impedance
LANGUAGE
English
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Released: 2013-05-31
BS EN 61643-21:2001+A2:2013
Low voltage surge protective devices Surge protective devices connected to telecommunications and signalling networks. Performance requirements and testing methods
LANGUAGE
English
immediate download
Released: 2002-05-16
BS IEC 61334-3-1:1998
Distribution automation using distribution line carrier systems. Mains signalling requirements Frequency bands and output levels
LANGUAGE
English
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Released: 1995-01-15
PD 7004:1995
Essential requirements for terminal equipment intended for connection to digital interfaces of the PSTN using Digital Access Signalling System No.2 (DASS 2)
LANGUAGE
English