The ALP series of intelligent low-voltage line protectors are suitable for low-voltage systems with rated voltage up to 400V AC, rated current up to AC 6300A and rated frequency 50/60Hz. Product set protection, measurement, control, bus communication as one, while providing remote automatic control, on-site direct control, panel indication, signal alarm, operation record, trip alarm record and switch quantity record
2、Model Description
Table 1 Function code
Function code | Function Description |
200 | Embedded installation |
220 | Embedded installation |
320 | Rail mounting |
Table 2 Rated current
Protector current specification | Tunable current range(A) |
1 | 1-6300(Ratio can be set) |
5 | 1-6300(Ratio can be set) |
25 | 6-25 |
100 | 20-100 |
160 | 80-160 |
400 | 140-400 |
Table 3 Additional features
Additional features | Code |
Residual current(Leakage) | L |
4-20mA analog output | M |
Note:1、When the leakage protection L is selected as an additional function, you need to purchase a zero-sequence transformer with different apertures according to the actual current.
3、Technical indicators
modelTechnical indicators | ALP200 | ALP220 | ALP320 |
Protector auxiliary power supply | AC 85V~265V/DC 110V~350,power consumption7VA | ||
Line rated working voltage | AC220V / 380V,50Hz / 60Hz | ||
Protector rated operating current | 1 (1A-6300A) | Small dedicated current transformer detection module | |
5 (1A-6300A) | |||
25(6A-25A) | |||
100(20A-100A) | |||
160(80A-160A) | External current transformer detection module | ||
400(140A-400A) | |||
Relay output contact capacity | Resistive load | ALP200、ALP220:1(95.96.97):AC:250V 3A;DC:30V 3A3:AC:250V 5A;DC:30V 5A | |
ALP320:5 relay output AC:250V 8A | |||
Surroundings | Operating temperature | -10ºC~55ºC | |
Storage temperature | -25ºC~70ºC | ||
Relative humidity | ≤95﹪no condensation, no corrosive gases | ||
Altitude | ≤2000m | ||
Pollution level | 3 | ||
Protection level | ALP200:IP20ALP220:IP20ALP320:Main body IP20, display module IP54 (when installed in the cabinet panel) | ||
Installation category | III级 |
4、Product Features
Description: “√” means Standard “■” means optional
ModelFunction | ALP200 | ALP220 | ALP320 | ||
Application | 0.4kV feeder | ||||
Switching acquisition | 5 | 5 | 9 | ||
Relay output | 4 | 4 | 5 | ||
Measurement function | I | U、I、P、PF、F、kWh | U、I、P、PF、F、kWh | ||
Protective function | Inverse time overcurrent protection | √ | √ | √ | |
Low timing limit overcurrent protection | √ | √ | √ | ||
High time limit overcurrent protection | √ | √ | √ | ||
Low timing zero sequence protection | √ | √ | √ | ||
High timing zero sequence protection | √ | √ | √ | ||
Inverse time zero sequence protection | √ | √ | √ | ||
Phase failure protection | √ | √ | √ | ||
Unbalance protection | √ | √ | √ | ||
Current demand protection | √ | √ | √ | ||
Linkage 1 protection | √ | √ | √ | ||
Linkage 2 protection | √ | √ | √ | ||
Linkage 3 protection | √ | √ | √ | ||
Undervoltage protection | √ | √ | |||
Overvoltage protection | √ | √ | |||
Residual current protection | ■ | ■ | ■ | ||
Low voltage protection | |||||
Low voltage two-stage protection | |||||
Low voltage three-stage protection | |||||
Zero sequence overvoltage protection | |||||
Voltage imbalance protection | |||||
PT disconnection protection | |||||
Car position protection | |||||
Alarm | Overloaded I segment alarm | ||||
Overload II alarm | |||||
Communication | Modbus-RTU | √ | √ | √ | |
Accessibility | 1 way 4-20mA analog output | ■ | ■ | ■ | |
record | 8 fault records | √ | √ | √ | |
8 trip records | √ | √ | √ | ||
8 closing records | √ | √ | √ | ||
8 DI action records | √ | √ | √ | ||
Protection setting query | √ | √ | √ | ||
Protection setting | √ | √ | √ |
Note:MAXU: maximum line voltage; U0: ground voltage; F: frequency; εu: voltage unbalance rate.