Main Features:
- The product has built-in rich protection functions
- It has linkage export function and can be set
- "tE time protection" complies with national standards (GB3836.3-2000)
- Automatically judge the size of fault current
- "Anti-sway" function to ensure that short-term shaking does not affect the continuity of the production process
- Self-starting function, the main circuit can be started in time according to the set parameters after a short power outage or power switching
- Can measure a variety of electrical parameters
- Built-in 4-20mA analog output
- Built-in multiple control methods
- The device can store fault parameters and information
- The display is intuitive, the operation is simple, and the LCD display is used
- Relay output, the export can be configured with different functions
- Switch input, can be configured with rich status and command signal functions
- Standard RS-485 communication interface, using standard MODEBUS-PTU protocol
- Using metal shell, the installation size is more reasonable, and can be installed in various drawers
- The product has a modular structure and flexible and diverse fixing methods



Rated parameters | |
Working power supply | AC/DC22V |
AC rated voltage (line voltage) | 400V |
AC rated current (external through-core current transformer) | 400A,300A,200A,150A,100A,75A,50A,25A,15A,10A,5A,1A |
Switch node input | |
Incentives | 24V internal excitation |
Debounce time | 20ms |
Relay contact output capacity | |
Normally closed relay | AC400V / DC250V Maximum current allowed to be disconnected: 10A Long-term allowable closing current: 8A |
Normally open relay | AC250V / DC30V Maximum current allowed to be disconnected: 5A Long-term allowable closing current: 5A |
AO Output | |
Output range | (4~20)mA |
Load capacity | 500Ω |
Voltage range | 12VDC~36VDC |
Power consumption | |
AC voltage circuit | >0.75VA/phase (Rated time) |
Device power circuit | >6W |
Overload capacity | |
AC current loop | 2 times rated current, continuous operation 10 times rated current, 10s allowed 40 times rated current, 1s allowed |
AC voltage circuit | 1.2 times rated current, continuous operation 1.4 times rated current, 10s allowed |
measurement accuracy | |
Line voltage measurement range | 380V 10V~456V; Deviation: ±0.5% 690V 10V~828V; Deviation: ±0.5% |
Current measurement range | (0.05~1.2) times rated current; Deviation: ±1.0% |
Active Power | ±1.0% |
Reactive power | ±2.0% |
Active energy | ±2.0% |
Reactive energy | ±2.0% |
Frequency | ±0.05HZ |
Power Factor | ±2.0% |
Analog output | ±2.0% |
Protection setting error | |
Action Value | |
Electric current | ±50mA or customized ±3% |
Voltage | ±2V or customized ±3% |
Action time | |
Definite time | Within the range of 0s~3s (including 3s), it shall not exceed 60ms. Within the range of 3s~99.9s, it shall not exceed ±2% of the set value. |
Inverse time limit | Within the range of 0s~3s (including 3s), it shall not exceed 100ms. Within the range of 3s~99.9s, it shall not exceed 5% of the set value. |
Working environment | |
Operating temperature | -25ºC~55ºC |
Storage temperature | -40ºC~70ºC |
Operating humidity | ≤90%RH No condensation, no corrosive gas location |
Storage humidity | ≤95%RH No condensation, no corrosive gas location |
Altitude | ≤2000m |
Electromagnetic compatibility performance | |
Electrostatic discharge immunity | IV Level (GB/T17626.2 IEC 61000-4-2) |
Radiated radio frequency electromagnetic field immunity | III Level (GB/T17626.3 IEC 61000-4-3) |
Electrical fast transient burst immunity | IV Level (GB/T17626.4 IEC 61000-4-4) |
Surge immunity | IV Level (GB/T17626.5 IEC 61000-4-5) |
RF conducted immunity | III Level (GB/T17626.6 IEC 61000-4-6) |
Power frequency magnetic field immunity | IV Level (GB/T17626.8 IEC 61000-4-8) |
Oscillation wave immunity | III Level (GB/T17626.12 IEC 61000-4-12) |
Electromagnetic emission limits | Qualified (GB/T14598.16 IEC 6255-25) |
Electrical insulation performance | |
Dielectric strength | 2kVPower frequency voltage, 1 min (GB/T13729) |
Insulation resistance | Not less than 100MΩ (GB/T13729) |
Surge voltage | 5kV, 12/50μS (GB/T13729) |
Mechanical behavior | |
Vibration response/durability | I Level (GB/T11287) |
Shock response/durability | I Level (GB/T14537) |
Collision Response | I Level (GB/T14537) |