SD9000 Microcomputer Excitation Control Panel

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SD9000 Hydropower station low voltage unit microcomputer excitation control screen is the product which we design to specially solve Hydropower station low voltage unit microcomputer excitation system. This control screen is formed by SD9000-L-E microcomputer brush excitation device,SCR rectifier circuit,exciting transformer,starting excitation circuit,deexcitation circuit,power component,display circuit,operation circuit and working power supply circuit. Brushless excitation unit only demands SD9000-L-W microcomputer brushless excitation device. SD9000-L-W microcomputer brushless excitation device can put in the automation control screen. It can save costs for clients. Function Characteristics: After starting excitation,regulator adjusts generator terminal voltage as 100%Ue（namely 380V） Prevent the unit over voltage when Circuit breaker tripping, generator terminal voltage is 380V. 3.Prevent the low-frequency over-current function, when frequencies below 40HZ, automatic turn-off SCR to improve unit safety 4. Super bright digital tube display the machine frequency, convenient and intuitive 5. Regulator adopt dual power supply, if the auxiliary power fade away in the run, it can be continual to work by the power of this machine. Technical parameters 1.Voltage range：（30%～130%）Ue 2.Voltage accuracy：Better than 0.5% 3.Dispersion modulus：+8% 4. Frequency characteristic: every change 1% of frequency, the generator terminal voltage change <0.1% Ue 5. Raising voltage from zero: the overshoot < 15%, settling time 3 ~ 5 seconds, number of oscillation 3 to 5 times 6. 10% step response: the overshoot <15%Ue,number of oscillation 1 time, settling time <3 seconds. 7. Throw rating reactive load: the overshoot <15% Ue, number of oscillation <3 times, settling time <5 seconds 8. SCR Control angular resolution: 0.036 degree 9. Strong excitation digits> 1.3 times

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Changsha Lichuan Hydropower Control Equipment Co.

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