The Shindengen SH847 is an excellent serial three-phase 50A voltage regulator for sports motorcycles (rpm>8000). It controls the rectification with 6 thyristors, so there is no problem with voltage regulation at high frequencies of the three-phase generator. It is sold with cables and connectors. The dimensions are 119*100*38mm. However, the price of the complete set is quite high (288,95$), there are many black copies, and there are not many sellers. Motorcyclists are trying to find a more affordable replacement. We found that they use Polaris regulators, RMSTATOR Can-Am Outlander 570 replacement regulator (189CAD$), RMSTATOR REGULATOR RECTIFIER SERIES SUZUKI DL1050 VSTROM DL1000 VSTROM OEM 32800-31J00 RMS020-107516 (166,8€) and so on. RMStator states in the specification "Maximum Charging Current: 50 A / 500 W". When 500W is divided by 14.5V, only 35A of current is obtained?? SH847 is also sold as an OEM for a Suzuki 2015 DL1000 SH847 Series R/R PN 32800-31J0. Another serial regulator from Shindengen, SH775, is 35A and significantly cheaper and smaller, but unfortunately, it is not suitable for speeds above 8000 rpm.

    Our replacement for SH847 is slightly less powerful. It is a robust serial-parallel regulator up to 30A: 14V-3FHVSP-30A-AX-K-LI (142*88*25mm), 14V-3FHVSP-30A-AX-K2-LI (142*88*25mm) i 14V-3FHVSP-30A-BX-K-LI (142*88*35mm). Although the HVSP regulator has a rated current of 30A, it successfully works where SH847 and SH775 are replaced. When properly installed, it has little heating. The reason for this is that the energy components are oversized, the cooler is larger, and the regulator only carries the consumption current. Up to 30A of consumption current is sufficient for most motorcycles. Our HVSP regulator behaves like a perfect combination of serial and parallel regulators, allowing the regulator to work well at all speeds and reducing unnecessary stator loading. Thinner versions are more suitable for installation, and the thicker version is characterized by better cooling and is recommended for quads. Our HVSP regulators, like SH847, have overheating protection and high voltage protection on the generator side (above 200VAC). However, our HVSP regulator also has high voltage protection on the battery side, which is provided by the parallel part of the regulator, whose primary function is to deblock the serial regulator at high engine speeds. Since the regulator does not have a connector, this further reduces the cost. Direct connection can be more reliable than a connector, but it is less practical in the case of repair. As the HVSP regulator is extremely reliable, direct connection is not a big problem. The HVSP regulator, like our other serial voltage regulators, has a built-in LED diode that facilitates diagnostics because it lights up when the regulator has not reached the set voltage, but also when there is a stator breakdown when the motor is not running (when contact+ is at 12V). The price of our regulator is from 136 to 146€ with a 4 to 5-year warranty. Many of our customers choose our HVSP type regulator as a reliable solution to the problem of frequent stator and regulator burning.

   A serial regulator reduces the current consumption from the stator, thereby reducing the heating of the stator and the installation from the stator to the regulator. Installation heating is not harmless, as it can lead to partial or complete interruption of the current from the generator, resulting in (unnoticed) battery discharge, battery damage, and inability to start the motorcycle. Moreover, due to the reduction of motor load, the installation of a serial regulator is literally self-paying. If it reduces power consumption by only 150W, it pays off approximately after 1390 hours of driving.

   More about the advantages of serial regulators can be found in the article: "Advantages of serial type voltage regulators on motorcycles". We offer high-quality serial single-phase and three-phase regulators and serial-parallel regulators for high-performance motorcycles that have proven themselves as an excellent choice in long-term practice. More about the quality of regulators can be found in the article:  "Top-quality regulators".

   Motorcyclists often replace the stator and install a serial type regulator before a failure occurs, because the factory solution can end with stator burning on some motorcycles. And then the original regulator can also burn out. It's better to prevent failure than to be left stranded on the road without power.