Dean Dean Huster is correct! Before you rule your starter defective, try it on a fully charged battery with the proper cabling. This motor package is offered in a wide range of operating voltages and with 4 gear ratio options, 12:1, 48:1, 192:1 and 768:1. These soft starters are available with ratings from 2. Also good and clean connections are a must! With no load attached like in your case, I doubt it would be as high, but still higher then the normal running amperage with no load. I also connected an analog amp meter to it. I was testing an old starter motor that I know used to work well. Just food for thought, good luck.
Screech should check if the pinion gear and shaft will turn around freely. A starter motor from a normal 2 Litre petrol car draws between 60 and 200 Amps when turning over the engine when the oil is warm and thin. The idea of this to get the armature rotating, which makes engaging with the flywheel ring gear easier. Disclaimer: I haven't the foggiest idea what the actual currents are on these devices. It is well suited for paper machines, conveyors or machine tools.
I tried to measure the solenoid current on a small car starter motor. I connected it to a car battery with about 20-30 amp cables and the insulation just melted. I have tested Chevrolet starters unloaded using 16 gauge wire without a problem, granted I don't run it for more than 20 seconds or so, but no melted wire. Do you know what the voltage of the starter is? I think that the solenoid current reduces when the starter is engaged. Oh, and this is for a 12-volt system.
Check for suspect smell of burning or quick heating up which may be your problem. A starter motor in good condition with no load on it should run at about 20 to 30 Amps at a very high speed. Our starter range cover Bosch, Delco, Nippondenso, Mitsubishi, Hitachi, Ford, Lucas series and etc. Testing a starter motor is done on a testrig on which the starter is securely clamped, the correct meshing gear is engaged and a brake can be applied to increase the load on the starter to blocked armature condition. Solenoid The starter solenoid draws a reasonable amount of current.
The resistance in these circuits are between 0. I think you may have a bad starter motor. The company has more than 100 sets of main manufacturing equipments such as variety finish machining equipment, heat-treat equipment, armature assembly lines and complete appliance assembly lines, etc. The drop in voltage would make the starter spin slow, but depending on the winding resistance it could still have drawn a lot of amperage at a lower voltage. I don't think it was spinning very fast. Our products are widely accepted by our customers all over the world and enjoy a good reputation.
Petrol and diesel engines Shifting armature: the whole armature shifts and engages the pinion in one or two different stages. That makes it about 30 Amps to the solenoid when there is no resistor in the way. The self-learning algorithm adjusts the soft starter parameters to work with different applications and varying load conditions. Be sure to restrain the motor when voltage is applied or you may get a quick lesson in conservation of momentum. The car is a Fiat Cinquecento, 900 cc, 4 cylinder. Expect the current on a warm engine to be in the area of maybe 100 amps, on a cold winter day closer to 150 - 200 amps.
Fifteen amps for the solenoid contactor coil seems high to me. Ω Electricity, Electric clocks, Meters, Batteries and Trains are amazing. Our products are widely accepted by our customers all over the world and enjoy a good reputation. I think that 300 amps is a better estimate for that car. The questions asked can be discussed in the open forums, so we all can learn from it or participate in a solution.
It looks that the starter motor under test by Screech could be poleing, has a worn bearing, burnt commutator or shorted field or armature winding and drawing excess current. On an older 6-volt system, expect double the current draws. When the pinion gear is meshed properly the main contacts close and full current is applied to the starter and full torque is available to crack the engine. There was no mechanical load on the starter. I would agree with Rodalco's estimates of current.