GB/T 18802.312-2017 Active National standards

GB/T 18802.312-2017 Components for low-voltage surge protective devices—Part 312:Selection and application principles for gas discharge tubes(GDT)

Publish Date: 2017-12-29 Implement Date: 2018-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 18802.312-2017

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Low-voltage electrical equipment

ICS Name: Substations, surge arrestors

Publish Date: 2017-12-29

Implement Date: 2018-07-01

Pages: 19 pages

Scope

This part of GB/T 18802 applies to gas discharge tubes used in telecommunications, signal transmission, and low-voltage power distribution networks with a nominal system voltage not exceeding 1,000 V AC or 1,500 V DC. A gas discharge tube (GDT) is defined as a sealed device with two or three metal electrodes, featuring a single or multiple gaps. The internal mixed gas and pressure are controlled to protect equipment and/or personnel from transient overvoltages. This part provides the characteristics and application circuits of two-pole or three-pole gas discharge tubes. However, it does not cover the technical requirements for complete surge protectors, nor does it address all technical requirements for using gas discharge tubes in electronic equipment. In these applications, ensuring the precise compatibility between the performance of the gas discharge tube and the tolerance of the surge protector is of critical importance.