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ASJ series residual current operated relay 

1 Introduction 

ASJ series residual current operated relay can be combined with low voltage circuit breaker or 

low voltage contactor to form a residual current protection device, which is mainly used for the TT 

and TN system distribution lines with AC 50Hz and rated voltage of 400V and below. It is used to 

protect  the  electrical  circuit  form  ground  faults,  prevent  equipment  damage  caused  by  earth  fault 

current  and  electrical  fire  accidents,  and  can  also  be  used  to  provide  indirect  contact  protection 

against personal electric shock hazard.   

Products meet the requirements of GB/T 22387-2016 

residual current operated relay

2 Types of Products 

Type 

Function 

Installation 

Appearance 

ASJ10-LD1C 

AC-type residual current measurement; 

Alarm prompt of current crossing line; 

Rated residual operating current can be measured; 

Limit non-driving time can be set; 

Two sets of relay output;   

With local and remote “test” and “reset” functions.     

Guide 

(DIN 

35mm) 

 

ASJ10-LD1A 

A-type residual current measurement; 

Current percentage light column display; 

Rated residual operating current can be measured; 

Limit non-driving time can be set; 

Two sets of relay output (settable)

note 1

;   

With local and remote “test” and “reset” functions.   

 

ASJ10L-LD1A

note2

 

A-type residual current measurement; 

Rated residual operating current can be measured; 

Limit non-driving time can be set; 

Two sets of relay output (settable); 

Transformer breakage alarm can be set; 

Pre-alarm value can be set; 

Return value can be set. 

With on-site display, remote "test", "reset"   

LCD display, 25 event records. 

 

ASJ20-LD1C 

AC-type residual current measurement; 

Alarm prompt of current crossing line; 

Rated residual operating current can be measured; 

Limit non-driving time can be set; 

Two sets of relay output;   

With local and remote “test” and “reset” functions. 

Panel 

(48*48) 

 

Summary of Contents for ASJ Series

Page 1: ...041 ASJ Series Residual Current Operated Relay Installation and Operation Instruction V1 9 Acrel Co LTD...

Page 2: ...tions in this operation manual and Acrel does not take responsibility for personal injuries or economic losses caused by ignoring tips of this manual The contents of the manual will be continuously up...

Page 3: ...ing attention 4 5 Operating Guide 5 5 1 Description of AC type Panel 5 5 2 Description of A type panel 5 5 3 Description of LCD type panel 5 5 4 Description of Selection 6 5 5 Instructions for the sel...

Page 4: ...Rated residual operating current can be measured Limit non driving time can be set Two sets of relay output With local and remote test and reset functions Guide DIN 35mm ASJ10 LD1A A type residual cu...

Page 5: ...0 0 06 0 1 0 2 0 3 0 5 0 8 1 4 10 s note 4 Rated residual non operating current I no 50 I n 50 I n Performance characteristics Sinusoidal AC Sinusoidal AC and pulsating DC Frequency 50Hz 5Hz 50Hz 5Hz...

Page 6: ...1 Installation Steps ASJ20 series instrument installation method is panel installation both sides of the buckle extrusion fixed the specific operation is as follows 1 On the switchboard choose the ap...

Page 7: ...xiliary power supply and signal input terminal Auxiliary power supply Signal input 4 3 2 Switching quantity input output terminal DI1 DI2 COM1 24 25 33 Relay output terminal Switching input terminal n...

Page 8: ...t button To reset the system 3 Alarm light Lights when the rated residual operating current I n is exceeded 4 Test button To test whether the indicator light is normal and the relay can operate normal...

Page 9: ...ing time setting value and communication status The LCD backlight is green in normal operation When alarming the residual current reaches the alarming value and the backlight is red When the residual...

Page 10: ...nded The earth fault current is very small and difficult to be estimated operating current can not be reached and the hazardous voltage will appear on the shell TN S system ASJ can be used cut off the...

Page 11: ...and next section only applies to ASJ10L LD1A First Menu Second Menu Third menu Descriptions Addr 1 247 none Address setting bAUd 1200 2400 4800 9600 19200 38400 none Communication Baud rate setting AL...

Page 12: ...turn value of alarm and prewarning operating current is 85 When the leakage current is less than 85 of the rated residual operating current the alarm relay AL1 is reset and when the leakage current is...

Page 13: ...irst event record is generated by the residual current alarm action the alarm value is 200 mA the occurrence time is 11 03 12 08 2 Set the residual current operating value to 50mA _ represents the mod...

Page 14: ...0ms Long press PROG Press Td to modify Press Td to modify number password confirm press PROG Press PROG Press RESET Press Td Press PROG Press RESET Press Td or Td Press PROG Press Td Running PASS Addr...

Page 15: ...Press PROG Press RESET Running PASS XXXX Long press PROG Press Td to modify press Td to modify number password confirm Press PROG Password confirm N Press RESET Addr bAUd AL Td 1 247 Press RESET Pres...

Page 16: ...byte n byte 2 bytes Address code the address code is composed of one byte 8 bit binary at the beginning of the frame and the decimal is 0 255 Only 1 247 is used in the residual current relay and othe...

Page 17: ...ion there is a method to calculate CRC by using the preset table Its main feature is that the calculation speed is fast but the table needs a large storage space This method will not be described here...

Page 18: ...H retain 3 0008H Rated residual operating current setting R W 10 30000mA word 4 0009H Prewarning operating current value R W 10 30000mA word 5 000AH 000FH retain 6 0010H Limit non driving time value R...

Page 19: ...parsing The parameter of address 001CH represents the current setting value as shown in the table below High 8 bit Bit15 Bit14 Bit13 Bit12 Bit11 Bit10 Bit9 Bit8 Low 8 bit Bit7 Bit6 Bit5 Bit4 Bit3 Bit...

Page 20: ...break line alarm 3 201812 V1 5 Add chapter 4 2 2 4 201912 V1 6 Delete ASJ10L 5 202012 V1 7 Add ASJ10L modify address contact 6 202104 V1 8 Modify AC type output as open Modify some mistake add transf...

Page 21: ...Fax 0086 21 69158303 Web site www acrel electric com E mail ACREL008 vip 163 com Postcode 201801 Manufacturer Jiangsu Acrel Electrical Manufacturing Co LTD Address No 5 Dongmeng Road Dongmeng industr...

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