C = Common
S = Start
R = Run
A hermetic compressor typically has three terminals: one for the start winding, one for the run winding, and one for the common connection. These terminals are used to connect the compressor to the power supply and control circuitry. In some cases, there may also be an additional terminal for grounding. The specific configuration can vary depending on the compressor design and application.
3cd b is name of compressor , is using in diesel locomotive . Compressor has three stage of cylinders w pattern. There are 2 low pressure cylinder 1 is high pressure, low pressure has 2 inlet & 2 discharge valve . Atmosphere air comes from air intake filters through inlet valve open position into low pressure cylinders via inter cooler get cooled goes to high pressure cylinder . The cooling improves the volumetric efficiency of the compressor. The fan the finned tubes of the inter cooler increses the cooling efficiency. After well compressed air from high pressure goes to after cooler & way to mr tank for air brake system. So compressor only used for air brake locomotives.
Maybe if it's not working the breaker has flipped. This can be due to a whole new range of electrical issues. Also, it may be not working because it shut off due to being full of condensation water. Some will shut off when they sense they are full, some will fill until the compressor mechanically cant produce compressed air (as water (theoretically)cannot be compressed ), and some will fill until the flood the motor.Maybe the sidewall of the compressor has rusted through creating a hole, or maybe its missing a fitting. In either case the compressor can't create a store of compressed air causing it to run constantly. Since these compressor are mostly designed for intermittent use only, it will eventually wear or burn itself out.If the compressor itself has failed it will be due to issues in one of two categories; mechanical and electrical. If this is a refrigeration compressor, then the issue is most likely mechanical. If this is a smaller, more common sized reciprocating compressor such as one's often used to inflate car tires, then most likely the issue is electrical. It could still be a mechanical issue due to internals wearing out.Possible electrical problems with this type of compressor:-Loose electrical connections:-if connections are loose the voltage drops. when the voltage drops the motor draws more current through the wire the maintain motor speed causing overheating. the most cost effective fix is total replacement.-Breaker overloaded:- if the breaker which the compressor draws power from is overloaded, when everything is running, the compresser cant get enough power. just like above, the motor will work too hard and overheat.Other electrical issues provided through Google search:Stator burn: Improper or unbalanced voltage and poor motor cooling.Single Phase Burn: Loss of one phase on a three phase system.Half Part Wind Burn: Loss of supply to one winding set on a two winding motor(Part wound).Loose Connections: Loose electrical joins causing a voltage drop.Starting Components: Damaged starting capacitors and relays.Inpure Power Supply: Spikes or surges of current flow.Shorted Power Terminals: Over torquing power terminals.Mechanical issues with reciprocating compressor for refrigeration :Flood Back: Liquid refrigerant returning to the compressor during the running cycle.Flooded Start: Crank case oil diluted with liquid refrigerant due to off cycle vapour migration.Liquid Slugging: Liquid refrigerant or excess amounts of oil entering the cylinders during the running cycle.Excessive Discharge Temperatures: Higher than design superheated discharge gas temperatures.Compressor Oil Loss: Quantity of oil returning from the system is less than that leaving the compressor.Perform a Google search for other possible information or contact a professional such as a small motor technician, plumber, HVACR guy, electrician, or handyman.
There are three parts to the PT6 engine. First is the compressor section. It's like any other turbine engine. Next is the "free power turbine." You have seen the little pinwheels kids like--you blow on them and they spin. Well, this is a pinwheel for grown-ups: there's a fan on the end of the compressor section's shaft. It blows air against a second turbine that's attached to the next section, which is the gearbox. When the second turbine spins... the gears and shafts in the gearbox turn and make the engine's propeller rotate. The PT6 is an unusual engine in that it's "in backwards"--the intake end of the engine, which in most engines points toward the nose of the plane, points toward the tail on a plane with a PT6 in it. PT6 engines are very versatile and have been used for a lot of things. Someone even tried running a locomotive on one--it worked fine but railroad mechanics would need to be retrained to work on jet engines, so the experiment never got past the trial stage.
THREE!
The three letters commonly found on compressor terminal blocks are "R," "S," and "T." These letters represent the different phases in a three-phase motor system, with "R" indicating the first phase, "S" the second phase, and "T" the third phase. In single-phase applications, you might see terminals labeled as "L" for line and "N" for neutral instead. Proper connection to these terminals is essential for the correct operation of the compressor.
csr
Common Start Run
C = Common S = Start R = Run
The three letters on a compressor terminal block typically represent the electrical connections for the compressor motor: "C" for Common, "R" for Run, and "S" for Start. The Common terminal is the main power input, the Run terminal is connected to the motor windings for continuous operation, and the Start terminal is used for initiating the motor's operation. These connections are crucial for the proper functioning of the compressor in HVAC systems.
run, start, and common.
csr
A hermetic compressor typically has three terminals: one for the start winding, one for the run winding, and one for the common connection. These terminals are used to connect the compressor to the power supply and control circuitry. In some cases, there may also be an additional terminal for grounding. The specific configuration can vary depending on the compressor design and application.
. Through a terminal box with three motor terminals one for the run winding and one for the start winding and one for the common line to the run and start windings
Terminal Three
Potentiometer
In electrical terms a three phase compressor is a compressor that is driven with a three phase motor. There are compressors that have three pressure heads. The three heads boost the pressure up in higher increments but these are referred to as three stage compressors.