RA-2 Reactive Auto-compensation Power Controller

Description
RA-2 series reactive auto compensating power controller is suitable for self-adjusting capacitor compensation devices in low voltage distribution increase the efficiency of the power transformer, reduce line loss, and improve voltage quality. On final aim it will increase the economic and social benefits.

Technical Data
Basic Parameter
Rated voltage: AC 380/AC 220±10%
Rated current: AC 0-5A
Rated frequency: 50Hz±5%
Control Parameters
Sensitivity: 100mA
Targe COSφ Preset: 0.70-0.99; step length 0.01; Factory preset 0.98 input and cutoff time delay: dynamic state 100ms-30S; Static state 1-250S;
Over-voltage protection: 380-500V/230-260V; step length 1V; Return difference 6V
Under-voltage protection: 340V/180V; Return difference 6V
CT variation: 50/5A-3000/5A: step length 1; Factory preset 500/5A
Capacitance capacity: dynamic state output of each branch DC12V×50mA
static state output of each branch 380V×7A/200V×5A
Measuring Accuracy
Voltage: ±1.0% Current: ±1.0% Power factor: ±1.0%
Reactive power: ±2.0%
Function characteristic
1. Adopt AC sampling technology
2. Digital integration, filtration, not sensitive to the harmony wave.
3. Regard the reactive power as controlling physical quantity; it has high control precision, without input and cutoff shaking.
4. The operation of the full digital of control parameter, easy to use, put in right place in one step, and the data are not lost to have a power failure.
5. Adopt and optimize the excellent control scheme automatically, reduce the times of input and cutoff, improve the service life of system.
6. Strong anti-interference ability can resist 2000V interference pulse from power direct, and not crashing, does not lose the data, it is reliable to run steady.
7. Digital display electric network power factors, reactive power, voltage, current (primary side) and control parameter.
8. With two working modes of manual and automatic is convenient for user to install and debug.
9. With the function of over-voltage, under-voltage judgment and display and fast cutoff capacitor group, prevent capacitor group from running under the over-voltage condition.
10. With the function of available input and cutoff shocking and locking (please indicate while or
during goods).
11. With the function for the delay time of the selectable single group capacitor for 200 seconds from cutoff to input, makes capacitor have abundant discharging time after cutoff and reduce capacitor the impact in electric net when pouting into again (Please indicate while ordering goods).
12. The input resistance of current sampling signal is smaller than 0.05Ω; it can be taken out from measuring loops directly.
Output Loops: 1-12 Loop

RA-20 Series controller regards 8 single-chip microcomputer as core, adopt the control scheme of phase splitting sampling and compensation and common compensation and phase splitting compensated altogether, very suitable for reactive compensation with 50Hz, 0.4KV three-phase load imbalance power system.