SD9000-L-W microcomputer brushless excitation device using single-phase half-controlled bridge rectifier circuit, the output voltage of 0-205UDC, for the electrical excitation voltage 140V, rated excitation current 20A or less of the generating units.

Features:

*Generator frequency / voltage / conduction angle / given value, digital display running value using the button given.

* Kai Li convenient, fast construction pressure, saving time and grid.

* Trigger pulse stability, good symmetry

* On-line variable gain PID regulation, so that the adjustment process is fast and stab le.

* Hardware and software anti-jamming, program self-recovery function.

* Regulator using SCM control, reliable operation, simple operation, easy maintenance

Technical Parameters:

* Voltage regulation range: 70V-490V Voltage regulation accuracy: better than 0.5% Adjusted difference: about +8%

* Frequency characteristics: the frequency of each change of 1%, the generator terminal voltage changes less than the rated value of ± 0.1%

* Zero from the boost: overshoot less than 10% -15%, adjust the time 3-5 seconds, 3-5 times the number of oscillation.

* 10% step response: overshoot less than 5%, the number of oscillation 1, the adjustment time is less than 5 seconds.

* Rejected reactive load: overshoot less than 5% Ue, the number of oscillation less than 3 times, the adjustment time is less than 5 seconds.

* Electrical parameters display accuracy: 1V

* Strongly excited parameters: machine terminal voltage dr ops, automatically enter the strong excitation.

* SCR control angle resolution: 0.036 degrees.

The main function:

* Regulator can be used when the digital frequency meter or voltmeter.

* The starting voltage is automatically given, the unit shutdown process by frequency decompression, when the frequency is lower than 46HZ into the low-frequency working state ("low frequency" light, and 35HZ automatically de-excitation ("de-magnetic" light), to prevent the rotor over-current.

* The machine load rejection over-voltage protection: circuit breaker trip, the voltage is automatically adjusted to 380V. To prevent the machine over-voltage. At the same time because the trip, the generator is still a voltage, so the protection mechanism can be action, such as: off the water machine to prevent runaway and so on.