Each pole is wired in series with a variable power resistor.
2.
The precharge circuit can be either power resistors connected in series with the loads until the capacitors are charged.
3.
Voltage can be measured losslessly, across the upper switch, or using a power resistor, to approximate the current being drawn.
4.
The load of a resistive load bank is created by the conversion of electrical energy to heat via high-power resistors such as grid resistors.
5.
A very small low-power dummy load such as a ceramic power resistor or 10-watt light bulb can be attached to the supply to allow it to run with no primary load attached.
6.
Of note, for about a century, some variable-speed electric motors have had decent efficiency, but they were somewhat more complex than constant-speed motors, and sometimes required bulky external electrical apparatus, such as a bank of variable power resistors or rotating converters such as the Ward Leonard drive.
7.
Collectors located on the roof, power resistors, group controller, radioreaktory circuit breaker WB-7 ( there is an option to install instead of the WB-7 breaker manual AV-8 in the cab at the rear ), a static converter ( IPT-600 / 28 or BP-3G ), stroke limiter rods.
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