Sean Sean, Thanks for the picture. And placing the neutral wire in between them means 120V from line to neutral for each. Only one power supply can be connected at a time. It is very important that none of the 12 winding connection be connected to anything during this test. You shouldn't have moved any of those wires. What I do not understand is how and where I am suppose to physically make the necessary changes and connections on my generator? The low zig-zag connection is correct. This installation will fall under the Canadian electrical code, if that makes any difference.
Then connect the other lead to S2, S3, etc in turn until you get to the lead that shows nearly zero ohms. One has to first adopt some phase convention for the various winding emfs. This subject is a lot of people browsing on the internet, as a result we collect pictures from various reliable resources as well as recognize in their area. In this case there is too much theoretical evidence contradicting your empirical measurements not to mention other empirical measurements. Make sure that you have your frequency set around 61- 62 hz depending on load so that when the unit is loaded, the frequency drops to 60 hz.
In the diagram, T3 to T6 is one of the six windings, for example. What is wrong now are your sensing leads, both for the voltage regulator and the meters. To be absolutely sure you have the generator leads correct: 1. These are both taken from the generator user manual. I would greatly appreciate any insight that anyone is willing to send my way. Using an Ohmmeter, on Rx1 scale, connect one end to S1. Also check commutator bars or rings to make sure none are grounding to the armature sharft or laminations.
If you draw the vector sketches of the voltage drops you will see that the dog leg winding has the same voltage regulation under load as the in phase winding. The adjustment depends on your type of control system for the set as a whole. If you earthed N, you wouldn't have a standard split-phase output, you'd have a 120 V L-N from W to N and a 240 V L-L from U to N, both with the same phase angle. In this case you should check the transformer, choke if any , rectifier and the condensers. Now you have two line connections and a neutral connection left. At the bottom of this internet site there is also a Stamford Generator Wiring Diagram picture gallery, if the picture over is not nearly enough for you. Posted on Jul 19, 2010 A one phase 3 wire system has a center tap.
You can use the busbar to make the connections. Tape off and disconnect L3 from anything. So the current flow though either part will be in phase and the magnitudes simply add algebraically. Do you think any of this might have something to do with the little blue coil leads I think they're coil leads? The double delta connection has become standard among gen-set makers to convert from three phase to single phase. Keep in mind that this is the voltage when I turn it up all the way on the voltage regulator and on the voltage dial on the panel. L1 should run through one of the coils, and L2 the other. That's the place you re-make the connections.
I have provided a picture below of my actual Control Panel. My twelve leads are all marked S1-S12, so do you know if that is the same as T1-T12 in the diagram? What I am not sure about is the connection drawing states that if 120V L-N is needed from the genset, then the neutral point must not be earthed. Once I get the Generator rewired for low-zigzag-- what should the phase selector be set at? And then connect it to ground. If it is digital computerized the adjustment may also be digital. Stamford Mx341 Avr Wiring Diagram Cabg Diagram Wiring Diagram, size: 800 x 600 px, source: docplayer.
If the sensing wires for the voltage regulator and metering were at the breaker, you shouldn't have disturbed them either. I understand the 120V from the line on the right side wires 1 and 3 to neutral, but not A how you get 240V from line to line, or B how you get 120V from the line on the left side wires 7 and 5 to neutral. Two hots and a neutral. Disconnect all 12 leads from anything else. The zig-zag lines indicate the generator windings themselves. Jim Thomas Would this informatiom apply military generator as our local Vol. May 04, 2015 Check the windings for shorts.
One will be at 50% leading and the other will be at 50% lagging. If you look carefully at each topology every effective winding between any line and neutral terminal has two paths in parallel through which current may flow. Final questions: For parallel zig zag, since there are two sets of parallel coils between line and neutral on the left side, and only one on the right side, does that affect the potential max current output - would it be different for each L-N, or the same? A delta system is a triangle and the angle of each triangle is a hot wire, one angle would be grounded or the center tap of one of the sides of the triangle. This being done, the rpm is too low and the output frequency is below 50hz. With a three phase home service, you can only connect two hots from your single phase generator, and the neutral.
I also go for dog leg if I have no manufacturers instructions. Or you are a trainee, or maybe even you that just need to know about Stamford Generator Wiring Diagram. I am including a link below to the wiring diagram I have been referring to. I have seen a wiring diagram with all of the different connection options ie: delta, wye, and zigzag , but I am a bit puzzled on how to go about implementing these connections on my generator. This is a good, solid, dependable unit. I actually put it up last night, but it didn't show up until tonight after you already answered a lot of my questions.