GB 19212.9-2007
Safety of power transformers, power supply units and similar devices Part 9: Particular requirements for bell and chime transformers (English Version)

Standard No.

GB 19212.9-2007

Language

Chinese, Available in English version

Release Date

2007

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2017-03

Replace By

GB/T 19212.9-2016

Latest

GB/T 19212.9-2016

Replace

GB 13028-1991

Scope

This chapter of GB 19212.1-2003 is replaced by the following content: This part specifies the safety requirements for various aspects of transformers (for example: electrical, temperature and mechanical aspects). This Part applies to fixed, single-phase, air-cooled (natural or forced cooling), independent or supporting safety isolating transformers for power supply bells and clocks, whose rated power supply voltage does not exceed 250 V AC and the rated frequency does not exceed 500 Hz, rated output not exceeding l00 VA. The no-load output voltage should not exceed AC 33 V or ripple-free DC 46 V, and the rated output voltage should not exceed AC 24 V or ripple-free DC 33 V. Bell and clock transformers are generally loaded for short periods of time to power household electroacoustic signaling equipment and other similar devices. This part applies to special safety isolation transformers (bell and clock transformers) that require double insulation or reinforced insulation between circuits according to installation regulations or equipment specifications. This section applies to dry-type transformers. Its windings can be hermetically sealed or unsealed. This standard applies to transformers containing electronic circuits. This standard does not apply to external circuits and their components intended to be connected to the input terminals and output terminals or sockets of the transformer.

GB 19212.9-2007 Referenced Document

• GB 19212.1-2003 Safety of power transformers,power supply units and similar--Part 1: General requirements and tests

GB 19212.9-2007 history

• 2016 GB/T 19212.9-2016 Safety of transformers, reactors, power supply units and combinations thereof—Part 9: Particular requirements and tests for transformers and power supply units for bells and chimes
• 2014 GB 19212.10-2014 Safety of transformers, reactors,power supply units and combinations thereof.Part 10:Particular requirements and tests for transformers and power supply units for class Ⅲ handlamps for tungsten filament lamps
• 2007 GB 19212.10-2007 Safety of power transformers， power supply units and similar devices Part 10: Particular requirements for transformers for class Ⅲ handlamps for tungsten filament lamps
• 1991 GB 13028-1991 Isolating transformers and safety isolating transformers--Requirements

GB 19212.9-2007 Safety of power transformers, power supply units and similar devices Part 9: Particular requirements for bell and chime transformers has been changed from GB 13028-1991 Isolating transformers and safety isolating transformers--Requirements.

GB 19212.9-2007 Safety of power transformers, power supply units and similar devices Part 9: Particular requirements for bell and chime transformers was changed to GB/T 19212.9-2016 Safety of transformers, reactors, power supply units and combinations thereof—Part 9: Particular requirements and tests for transformers and power supply units for bells and chimes.

GB 19212.9-2007 -All Parts