GB/T 22387-2016Residual current operated relay (English PDF)

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 22387-2008 "Residual current operated relay". This standard compared with GB/T 22387-2008, the main changes are.

- the maximum operating time in Table 3 is increased by footnote b. or according to the manufacturer's value (excluding S type);

--- 6.1.6 Increase in "pollution level". Pollution degree 4 (if applicable) and increase Note: GB 14048.1-2012 6.1.3.2 Clear, Unless otherwise specified in the relevant product standards, industrial appliances are generally applicable to the environment of pollution level 3; however, for special The use and micro-environment may consider the use of other pollution levels;

--- 7.2.2.3 "The delay type residual current relay (except the S-type product with a limitless drive time of 0.06s) shall not have a self- Dynamic switching function ", modified to" delay type reclosing function is limited to the limit does not drive time (2I delta n) is 0.06s, 0.1s and 0.2s residual current action relay ";

- 8.4.2a), b) the time interval between the two trials is changed from "1s" to "5s" in the column item;

--- 8.7.4 "Frequency withstand voltage test", the revised test voltage and GB 14048.1-2012 consistent with the relevant provisions.

Introduction

The technical content of this standard is based on GB /Z6829-2008 "Residual current action protection electrical general requirements", GB 14048.2-2008 "Low-voltage switchgear and controlgear - Part 2. Circuit breakers" and GB 14048.5-2008 "Low-voltage switchgear and controlgear Part 5-1. control circuit electrical and switching elements electromechanical control circuit electrical appliances "and other standards related to the preparation.

1 Scope

This standard specifies the type, classification, characteristics, and marking of the residual current operated relay (hereinafter referred to as residual current relay).

Conditions, installation conditions, structure, performance requirements, test methods and inspection rules.

The residual current relay specified in this standard is suitable for use in distribution lines with AC rated voltage of 400V and below. Measure the ground fault current in the line.

Note: The relevant part of this standard can also be used to guide the AC rated voltage to 1200V residual current relay.

The residual current relay specified in this standard refers to the simultaneous completion of the detection of residual current, the residual current compared with the reference value, and when When the residual current exceeds the reference value, a mechanical opening and closing signal is issued, including the residual current transformer and the control part Body residual current relay and residual current transformer and control part are installed separately, but are divided together by electrical connection Body residual current relay.

The residual current relay specified in this standard can be assembled with a low-voltage circuit breaker or a low-voltage contactor into a combined residual current protector, Used to protect the electrical circuit ground fault, to prevent ground fault caused by the current equipment and electrical fire accidents can also be used to touch the human body Electrical hazards provide indirect contact protection.

The residual current relay specified in this standard can also be used with sound and light alarm devices to monitor the residual current monitor, used to monitor the electrical circuit Ground fault current. When the rated residual operating current is less than or equal to 0.5A, it can also be used as a residual current fire monitoring device for monitoring Depending on the system ground fault current, to prevent electrical fault caused by ground fault current. This standard does not apply to relays with overload protection.

2 Normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document.

GB/T 2423.4-2008 Environmental testing for electric and electronic products - Part 2: Test methods - Test Db alternating damp heat (12 h 12h cycle)

GB/T 4207-2012 Determination of electrical traces and resistance to traceability of solid insulating materials under wet conditions

GB 4824-2013 Limits and methods of measurement of electromagnetic disturbance for industrial, scientific and medical (ISM) RF equipment

GB/T 5169.10-2006 Fire hazard testing for electric and electronic products - Part 10: Basic test methods for glowing wire/hot wire Hot filament devices and general test methods

Residual current - operated electrical protection - General requirements

Low - voltage switchgear and controlgear - Part 1. General

GB 14048.5-2008 Low - voltage switchgear and controlgear - Part 5-1. Control circuits - Electrical and switching elements - Electromechanical Control circuit electrical appliances

GB 16916.1-2014 Residual current operated circuit breaker (RCCB) with no overcurrent protection for household and similar use Part 1 Points. general rules

GB/T 17626.2-2006 Electromagnetic compatibility - Testing and measurement techniques - Electrostatic discharge immunity test

GB/T 17626.3-2006 Electromagnetic compatibility test and measurement technology Radio frequency electromagnetic radiation immunity test

GB/T 17626.4-2008 Electromagnetic compatibility test and measurement techniques Electrical fast transient burst immunity test