摘要：对电气线路进行接地故障保护，方式接地故障电流引起的设备和电气火灾事故越来越成为日常必需。针对用户侧主要的用能节点，设计安装剩余电流继电器，实时监控各用能回路的剩余电流状态。通过实时监控用能以及相关电力参数、提高用能安全、可靠及维护效率、降低维护的人工成本、实现了对剩余电流监控的无人值守。通过用能的实时监测，数据的采集及报警，监测配电系统中剩余电流，为用户电气线路接地故障保护，防范剩余电流导致的火灾事故和人员触电事故提供保障。现就我司ASJ型剩余电流继电器在马尔代夫环岛水上排屋项目的应用做一简要介绍。

Abstract: Ground fault protection for electrical circuits, equipment and electrical fire accidents caused by ground fault currents are increasingly becoming a daily necessity. For the main energy-consuming nodes on the user side, a residual current relay is designed and installed to monitor the residual current status of each energy-using circuit in real time. Through real-time monitoring of energy use and related power parameters, the safety, reliability and maintenance efficiency of energy use are improved, the labor cost of maintenance is reduced, and the unattended monitoring of residual current is realized. Through the real-time monitoring of energy use, data collection and alarm, the residual current in the power distribution system is monitored, and the ground fault protection of the user's electrical circuit is provided to prevent fire accidents and personal electric shock accidents caused by residual current. Here is a brief introduction to the application of our company's ASJ residual current relay in the water terrace house project around the island Maldives.

1.项目概述  Project Overview

马尔代夫环岛水上排屋主要用于接待世界各地游客，应用现场频率为50 Hz，电压为220V的TT或者TN系统配电线路。客户希望通过在水上排屋配电柜内安装剩余电流继电器来监测线路剩余电流，并且希望可以在显示面板上显示实时监测的剩余电流值与其设定的剩余电流值之比值，在此比值达到80%时剩余电流继电器能立即报警。安科瑞ASJ10-LD1A配合剩余电流互感器，成功地解决了客户现场剩余电流监控需求。

The water townhouses around the island in the Maldives are mainly used to receive tourists from all over the world. The application site frequency is 50 Hz and the voltage is 220V TT or TN system power distribution lines. The customer hopes to monitor the residual current of the line by installing a residual current relay in the distribution cabinet of the water row house, and hopes that the ratio of the real-time monitored residual current value to the set residual current value can be displayed on the display panel, when the ratio reaches 80%, the residual current relay can alarm immediately. Acrel ASJ10-LD1A cooperates with the residual current transformer, Successfully solved the customer's on-site residual current monitoring needs.

1.ASJ系列剩余电流继电器介绍  

ASJ Series Residual Current Relay

ASJ 系列剩余电流动作继电器可与低压断路器或低压接触器等组成组合式剩余电流保护装置，主要适用于交流 50Hz，额定电压 400V 及以下的 TT 和 TN 系统配电线路，用来对电气线路进行接地故障保护，防止接地故障电流引起的设备损坏和电气火灾事故，也可用来对人身触电危险提供间接接触保护。

产品符合 GB/T 22387-2016《剩余电流动作继电器》的要求。

   ASJ系列剩余电流继电器集线路过电压、欠电压保护功能和线路正常电压自动延时复位功能。该产品主要应用于住宅分户箱进线或单相或三相用电设备配电线路的保护，产品体积小、精度高、结构紧凑，安装方便，是民用建筑领域中的安全保护装置。

ASJ series current action relays can be combined with low-voltage power supplies or low-voltage contactor to form a combined power supply current protection, mainly used for AC 50Hz, voltage and below TT400V devices and TN system piping, in addition to ground fault protection for electrical circuits to prevent ground faults Common equipment damages and electrical failures caused by this can also prevent the danger of personal electric shock and provide direct contact protection.

The product meets the requirements of GB/T 22387-2016 "Catalyst Current Relay".

   ASJ series sanitary current relays integrate line over-voltage and under-voltage protection functions and automatic additional functions for normal voltage. The product is small in size, high in precision, flexible in structure and easy to install. It is a safety protection device in the field of civil construction.

2.型号说明  Model description

Technical features

technical parameter		index
		Type AC	Type A
input	Rated residual action current I△n	0.03、0.1、0.3、0.5(A)	0.03、0.05、0.1、0.3、0.5、1、3、5、10、30(A) note 3
	Non-driving time of limitation △t	0.1、0.5(s)	0、0.06、0.1、0.2、0.3、0.5、0.8、1、4、10(s) note 4
	Rated residual non-action current I△no	50%I△n	50%I△n
	performance characteristics	simple sinusoidal alternating current	simple sinusoidal alternating current and pulsating direct current
	frequency	50Hz±5Hz	50Hz±5Hz
action error		-20% ~ -10%I△n	-20% ~ -10%I△n
output	output mode	one is the normal closing and the other is for the transformation	one is the normal closing or opening, and the other is for the transformation
	contact capacity	5A 250VAC 5A 30VDC	AL1:8A 250VAC  5A 30VDC AL2:6A 250VAC  5A 30VDC
	reset mode	the on-the-spot one and the long-distance one,	the on-the-spot one, the long-distance one and the automatic one
power supply	voltage range	AC110V、AC220V（permissible error±10%）		AC110V、AC220V、DC85-270V （permissible error±10%）
	power dissipation	≤5W
power frequency withstand voltage		The effective value of alternating current between the power supply, input and output: 2kV/1min
under the normal operation	temperature	operating temperature: -20℃ ~ +55℃ storage temperature: -30℃ ~ +70℃
	humidity	≤95%RH, with moisture condensation, and corrosive gas place
	height above sea level	≤2000m
	class of pollution	Grade three
	installation category	Type Ⅲ

Note 3：ASJ10L-LD1A rated residual action current I N is 10mA-30A continuously adjustable;

Note 4：ASJ10L-LD1A limit non-driving Time N is 0-10S continuously adjustable.

Types of Products

Note1：The function of setting for relay means that you can set the initialization and the output of the relay by yourself, which is acted by the dial switch on the panel; the specific setting guide can be found from the table 5.

Note2：OPTIONAL FUNCTION C: RTU Communication RS485, Model ASJ10L-LD1A/C

3.剩余电流互感器选型 Model Selection of Residual Current Relay

4.安装图片 Installation picture

5.总结  Summary

ASJ系列剩余电流继电器具有极高的性能价格比，作为一种先进的智能化、数字化的剩余电流监控仪表，该剩余电流继电器已广泛应用在民用建筑住宅分户箱进线或单相或三相用电设备配电线路中。

ASJ series residual current relay has a very high performance-price ratio. As an advanced intelligent and digital residual current monitoring instrument, the residual current relay has been widely used in the incoming line or single-phase or three-phase of the household sub-box of civil buildings. Electric equipment in the power distribution line.

参考文献 Bibliography

1.Solutions For Enterprise Micro-grid System 2021.04