Acrel ASJ10-LD1C Earth Leakage Relay
Acrel ASJ10-LD1C Earth Leakage Relay
General
Acrel ASJ series residual current relays are mainly suitable for TT or TN system distribution lines with AC 50Hz and rated voltage of 400V and below. They are equipped with low-voltage circuit breakers or low-voltage contactors to reduce electrical safety accidents caused by leakage and ensure the safety of staff.
Features
Frequency
Auxiliary power supply
AC110V, AC220V, DC85 ~270V
(permissible error ±10%)
Consumption
≤5W
Installation
DIN rail 35mm
Dimension(L*W*H)
85×54×64mm
Wiring
Dimension of ASJ10-LD1A Earth Leakage Relay
Networking of ASJ Series Earth Leakage Relay
How Does Residual Current Device Work?
Acrel Residual Current Device Using 32-bit high-performance CPU, real-time sampling of three-phase AC current and three-phase AC voltage signals, and using the effective value calculation method to achieve high-precision measurement in a wide frequency range. Integrated with a variety of protection functions, the protection can be put in or out, alarmed or tripped with a simple selection; high precision, low power consumption, fast action, high return coefficient, no jitter, and can be used for voltage monitoring (voltage type: Such as relay protection of generators, transformers and transmission lines, etc.) or current monitoring (current type: such as in overload and short-circuit protection lines of motors, transformers and transmission lines), as overvoltage, undervoltage, overcurrent, Blocking action element or starting element for undercurrent, overfrequency, underfrequency protection.
ASJ Series Earth Leakage Relay FAQs
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.
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.
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.
Reason one may be wiring error; Another may be wrong product selection.
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.
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.
Acrel ASJ10-LD1C Earth Leakage Relay
Types
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Type
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Function
|
Installation
|
Appearance
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ASJ10-LD1C
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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.
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Guide
(DIN 35mm)
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 |
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ASJ10-LD1A
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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.
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 |
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ASJ10L-LD1A note2
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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.
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 |
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ASJ20-LD1C
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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)
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 |
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ASJ20-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.
|
 |
Technical Parameters
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Technical parameter
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Indicator
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AC type
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A type
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Power supply
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Voltage range
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AC110V、AC220V （±10%）
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AC/DC85~265V
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Power consumption
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≤5W
|
||
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Input
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Rated residual operating current I△n
|
0.03、0.1、0.3、0.5(A)
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0.03、0.05、0.1、0.3、0.5、1、3、5、10、30(A)note 3
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Limit non-driving time △t
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0.1、0.5(s)
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0、0.06、0.1、0.2、0.3、0.5、0.8、1、4、10(s)note 4
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Rated residual non-operating current I△no
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50%I△n
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50%I△n
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Performance characteristics
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Sinusoidal AC
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Sinusoidal AC and pulsating DC
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Frequency
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50Hz±5Hz
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50Hz±5Hz
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Operating range
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-20% ~ -10%I△n
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-20% ~ -10%I△n
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Output
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Output mode
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One is normally open and another is for transformation
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One is normally closed or open, and another is for transformation
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Contact capacity
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5A 250VAC
5A 30VDC
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AL1:8A 250VAC; 5A 30VDC
AL2:6A 250VAC; 5A 30VDC
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Reset mode
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Local reset or remote reset
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Local reset, remote reset or automatic reset
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Installation and use environment
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Temperature
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Run temperature：-20℃ ~ +55℃，Storage temperature：-30℃ ~ +70℃
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Humidity
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≤95%RH，no condensation, and no corrosive gas places
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Elevation
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≤2000m
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Class of pollution
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Grade three
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Installation category
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Type Ⅲ
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1. Manual for Acrel ASJ10-LD1C Earth Leakage Relay
2. Installation and Use for Acrel ASJ10-LD1C Earth Leakage Relay
3. Debugging Software for Acrel ASJ10-LD1C Earth Leakage Relay
