Acrel Asj20-Ld1a Earth Leakage Relay for Low Voltage

• Customization: Available
• After-sales Service: 2 Years
• Warranty: 2 Years
• Model NO.: ASJ20-LD1A
• Display: Indicator
• Installation: Direct Connected
• Usage: Earth Leakage Relay
• Theory: Electronic Meter
• Power Meter Connection: Terminal
• Measured Signal: Continuous Wave
• Type: Energy Meter
• Customized: Non-Customized
• Communication: RS485 (Modbus-RTU)
• Property: AC
• Auxiliary Power: AC110V, AC220V
• Frequency: 45~55Hz
• Consumption: Less Than 5W
• Installation Mode: Embedded
• Transport Package: Carton
• Specification: 48*48*84.5mm
• Trademark: ACREL
• Origin: Mainland China
• HS Code: 9028301300
• Production Capacity: 1000PCS/Per Month
• Package Size: 26.50cm * 17.00cm * 17.00cm
• Package Gross Weight: 0.420kg
• Lead Time: 15 days (1 - 1 Pieces) ; To be negotiated ( > 1 Pieces)

Product Description

Acrel ASJ10-LD1C Earth Leakage Relay for Low Voltage

Product Description

Acrel ASJ series residual current action relay can be combined with low voltage circuit breaker or low voltage contactor to form a combined residual current protection device. It is mainly used for TT and TN system distribution lines with AC 50Hz and rated voltage of 400V and below.

Characteristic
Communication	Property	Auxiliary Power
RS485 (Modbus-RTU)	AC	AC110V, AC220V

Type	Function
ASJ20-LD1C	AC type residual current
	Over current alarm
	Rated residual operated current can be set
	Limited non-driving time can be set
	2 relays output(1 NC contact, 1 normal changeover contact)
	With local/remote "test" and "reset" functions
ASJ20-LD1A	A type residual current measurement
	Current percentage light bar indication(30%, 50%, 70%, TRIP)
	Rated residual operated current can be set
	Limited non-driving time can be set
	2 relays output(1 NO contact, 1 normal changeover contact)
	With local/remote/automatic "test" and "reset" functions
ASJ10-LD1C	AC type residual current
	Over current alarm
	Rated residual operated current can be set
	Limited non-driving time can be set
	2 relays output(1 NC contact, 1 normal changeover contact)
	With local/remote "test" and "reset" functions
ASJ10-LD1A	A type residual current measurement
	Current percentage light bar indication(30%, 50%, 70%, TRIP)
	Rated residual operated current can be set
	Limited non-driving time can be set
	2 relays output(1 NO contact, 1 normal changeover contact)
	With local/remote/automatic "test" and "reset" functions

Features

1. Frequency

50Hz±5Hz

 

 

2. Auxiliary power supply

AC110V, AC220V, DC85 ~270V

(permissible error ±10%)

 

 

3. Consumption

≤5W

 

4.Installation

DIN rail 35mm

 

5.Dimension(L*W*H)

85×54×64mm

Panel

Installation Instructions

Networking

Application

FAQ

Q: How many wires can be passed through a residual current transformer?
Can I just put one firewire? Can I just pass firewire of A, B, C through the sensor?
A: In a three-phase four-wire system, 4 wires should be used. You can't just pass a firewire,
and A, B, C, N should all be passed through the Residual current transformer. A suitable transformer should be selected according to the wire diameter and rated current on site.
 
Q: The wire of three phase dand four wire is very thick. Can a measuring sensor be fitted to each phase, and four sensor secendary be passed through small hole size wires. Then connect the residual current relay?
A: Not recommended. By this plan, at the moment of starting the high-power and
high-frequency equipment, the vector sum of the output current of three-phase
four-wire measurement transformer is not zero (directly measured is 0), which can
easily lead to malfunction and tripping.
 
Q: Can open-type residual current transformers be used in the renovation project?
A: For reconstruct projects, if the wire diameter of the line is less than 100mm, open-type residual current transformers can be used. It is not recommended to use open-type residual current transformers larger than this aperture, because the measurement accuracy of the large aperture sensor is poor.
 
Q: Why does the residual current relay operate as soon as it is powered on?
A: Reason one may be wiring error;  Another may be wrong product selection.
 
Q: After power-off the ASJ residual current relay, the breaker will trip-out. What's the reason for this phenomenon?
A: This phenomenon is that the breaker will trip-out after the protected power supply is cut off; the other is to protect the line when undergoing dual power switching.
ASJ series residual current relay is the type that automatically recovers and resets when the auxiliary power fails.According above-mentioned conditions, the instrument can be selected as the type that does not automatically act when the power fails.
 
Q: What does In:100A mean on the panel? Can it be removed?
A: In means rated current and cannot be removed. It is clearly stipulated in 4.2.2.2 and 5.1 of GB/T 22387-2016, the panel needs to be marked with the rated current or the size of the hole of the residual current transformer.

Company Profile

Acrel Co., Ltd.[stock code: 300286.SZ] is a high-tech enterprise that integrates R&D, production, sales, and service, since its establishment, is committed to providing users with energy efficiency management and powerful security system solutions. Acrel Electric has a complete production line from cloud platform software to sensors.

Acrel energy efficiency management system including substation operations and maintenance cloud platform, electricity safety management cloud platform, Environmental equipment power consumption monitoring cloud platform, prepaid management (system) cloud platform, intelligent power distribution monitoring system, power quality management system, building energy consumption management system, industrial energy control platform, leakage power monitor and control system, fire-fighting device power monitoring system, fire-proof door monitoring system, emergency lighting and evacuation indicating system, EV charger management system, data center power&environment monitoring system, smart lighting control system, IT isolation power supply system and related products.

The company attaches great importance to product quality and innovation. By the end of 2018, the company has 5 trademarks, 18 invention patents, 72 utility model patents, 94 appearance patents, and 147 computer software Copyrights, and has participated in the formulation of national or industrial standards.