Dynamic automatic controller is Complete digital design, AC sampling, human-machine interface applies the large scale LCD in chinese . Adhering to people-oriented design ideal, modular assembly, flow line design of appearance . real time Display power factor , voltage, current, active power, reactive power, distortion ratio of total voltage harmonic ,distortion rate of total harmonic current , the average value of frequency and status information of capacitor switching .
Features
1 complete digital design, AC sampling , human-machine interface applies the large scale LCD in chinese.
2 adhering to people-oriented design, modular assembly, flow line design of appearance .
3 real time Display power factor , voltage, current, active power, reactive power, distortion ratio of total voltage harmonic ,distortion rate of total harmonic current , the average value of frequency and status information of capacitor switching
4 Set the parameters with Chinese prompts, digital input.
5 capacitor switching control program support equivalent capacity /encode (1:2:2,1:2:3,1:2:4:8 …) and fuzzy control switching mode.
6 with manual compensation / automatic compensation for work.
7 sample quantities is reactive power ,with harmonic measurement and protection.
8 can order a controller specially ,which has RS-485, MODBUS standard , bus communication interface, easy to access intelligent switchgear systems. Notice: Optional custom series controllers Management Software, load into user’s computer system .connection with the controller’s communication port , can be viewed over the real-time data , history load curveof the user’s system and the report from computer monitor, energy saving for the user and provide fast and convenient on-site data.
Technical parameters
1, environmental conditions
Altitude: ≤ 2500m
Operating temperature: -20 ℃ ~ +60 ℃
Storage temperature: -25 ℃ ~ +70 ℃
Surrounding has no corrosive gases, no conductive dust, t no flammable medium, the installation location has no severe vibration, no rain erosion.
2, the measured data:
Measuring voltage: 100V ~ 500V
Measuring current: 0 ~ 6000A
Measuring Power Factor: 0.200 lagging ~ 0.200 ahead
Power supply: 220V ± 20%
Measurement frequency: 45 ~ 65HZ
Shows active power: 0 ~ 6553Kw
Shows the reactive power: 0 ~ 6553Kvar
Shows distortion ratio of total voltage harmonic :0.0-100.0%
Shows distortion ratio of total current harmonic:0.0-100.0%
display version: 2.0 (the machine upgrade serial number)
display version: 2.0 (the machine upgrade serial number)
3, the input / output signal:
Sampling voltage: Line voltage 0.4KV
Sampling current: bus bar current transformer secondary 0 ~ 5A
Output Control : Relay dry contact 5A/250V resistance (static)
12V/ 30mA branch (dynamic)
Note: sampling voltage and current can not be same in phase.
4, LED digital display data refresh cycle ≤ 1s
5, the data communication interface
Communication Interface: RS-485 protocol: MODBUS communication protocol.
Communication speed: 4800 ~ 3840bps (no parity).
6, the measurement accuracy
Voltage: ± 0.5% Active Power: ± 1.0% Current: ± 0.5%
Reactive Power: ± 1.0% Power factor: ± 1.0% Frequency: ± 0.1Hz
The above data is based on the controller after 10 minutes warm-up and calibrated within one year.
7, the data set
Current ratio: 0.1 ~ 1200 (ratio value)
Delay time: 5s ~ 100s (static) 0.1s ~ 30s (dynamic)
Target COS &:0.80 lagging ~ 0.80ahead step 0.01
Over-voltage setting: 400V ~ 480V step 2 V
Switching threshold: 0.5 ~ 1.2 (setting the threshold value of investment) step 0.1
Note: The removal threshold value = 1.2- the current set
Harmonic Protection: Hv: 0.0% ~ 50.0% Step: 0.5%
Hi: 0.0% ~ 100.0% Step: 0.5%
Capacitor preset: 0 ~ 999Kvar / group
8, ID set
The machine has a communication interface, support for MODBUS protocol, including ID number and the communication rate set of the communication interface 485 , ID number describes the address number of the machine in the network system ,form 001 to 255, the communication speed is 4800 ~ 38400bps.
9, reliability
Mean time between failures (MTBF):> 25000 hours.