- Thread starter Bill Edwards
- Start date
It's a BC164D I could see on one of the pics. A very widespread unit, Newage must gave made ten of thousands of them.
Almost certainly it's got an SX460 AVR - it might well state the AVR model low down on the dataplate.
If it is the 460 data is widely available. 2 wires are Exciter pos & neg etc
OK, my old scribblings (usually MeccAlte 4-pole, 12-wire alternators, but iirc the BC164D is a12-wire as well, so it's the same principle.
In 3 phase standard guise from the factory, it'd be configured to Series Star.
Each of the points of the Star is a phase L1, L2, L3, while the centre point is N (& should also be linked to Earth so you have no N-E voltage potential, & the Alternator needs to have its chassis Earth point going to Earth via a Rod or similar).
For 1 phase we'd always convert to Series Delta (a matter of just moving the star point connections on the terminal block & splitting them onto the 3 star point wires i.e. where our 3ph live output cables would be connected - of the old 3ph Star points - as per the image I'll add below which uses the Meccalte wire numbers).
Note in the image the 3ph Star centre point wires are moved so 1 gets 12 added, 5 gets 4 added, and 9 gets 8 added.
You then have a Series Delta, and the original 3ph Star Live connection posts are now Delta connection posts as per the image.
Again, the selected N needs to be linked to Earth as above.
An offload test run & Meter check should prove you have your dedicated 1ph output across two Delta points.
I'm not sure I've explained that at all well, but I hope it helps.
Note: if its a 6-wire alternator you can do very much the same, the difference is its less coils, so it's just altering from "Star" to "Delta" configuration.
In 3 phase standard guise from the factory, it'd be configured to Series Star.
Each of the points of the Star is a phase L1, L2, L3, while the centre point is N (& should also be linked to Earth so you have no N-E voltage potential, & the Alternator needs to have its chassis Earth point going to Earth via a Rod or similar).
For 1 phase we'd always convert to Series Delta (a matter of just moving the star point connections on the terminal block & splitting them onto the 3 star point wires i.e. where our 3ph live output cables would be connected - of the old 3ph Star points - as per the image I'll add below which uses the Meccalte wire numbers).
Note in the image the 3ph Star centre point wires are moved so 1 gets 12 added, 5 gets 4 added, and 9 gets 8 added.
You then have a Series Delta, and the original 3ph Star Live connection posts are now Delta connection posts as per the image.
Again, the selected N needs to be linked to Earth as above.
An offload test run & Meter check should prove you have your dedicated 1ph output across two Delta points.
I'm not sure I've explained that at all well, but I hope it helps.
Note: if its a 6-wire alternator you can do very much the same, the difference is its less coils, so it's just altering from "Star" to "Delta" configuration.
AVR. The AVR is a basic 4-wire, single-phase sensing unit.
X & XX are Exciter +ive & -ive (iirc it's counter-intuitive in that X is + and XX - ). Wire from T7 on the AVR should be piggy-backed on with your N-E point on the terminal block, while wire from T8 should be piggy-backed onto your Live.
(If you check your existing wiring, you should find that AVR T8 wire is on L1 of your 3ph setup, while AVR T7 wire is at the Star centre point group of 3 wires & the N-E Link. Keep them so they are getting L & N in the same way when you move the wiring to Series-Delta & you should be good).
X & XX are Exciter +ive & -ive (iirc it's counter-intuitive in that X is + and XX - ). Wire from T7 on the AVR should be piggy-backed on with your N-E point on the terminal block, while wire from T8 should be piggy-backed onto your Live.
(If you check your existing wiring, you should find that AVR T8 wire is on L1 of your 3ph setup, while AVR T7 wire is at the Star centre point group of 3 wires & the N-E Link. Keep them so they are getting L & N in the same way when you move the wiring to Series-Delta & you should be good).
Bill's images early on in the thread will add to the above but with Newage specific nomenclature - the reconfig process via the terminal block is the same for both brands of 12-wire alternators (& others).
In 3ph a Newage will be the image on the left, & to go to 1ph you reconfig to the image on the right. That should give you 230vac between any 2 Delta points (i.e. 6 & 7, 6 & 8, 7 & 8).
In 3ph a Newage will be the image on the left, & to go to 1ph you reconfig to the image on the right. That should give you 230vac between any 2 Delta points (i.e. 6 & 7, 6 & 8, 7 & 8).
