Description
28V Electronic Alternator Controller
What’s included:
- Installation Drawing
- Warranty Card
- Product Eligibility Catalog (PEC)
- Troubleshooting Notes
- STC Certificate
- Instructions For Continued Airworthiness Maintenance (ICA)
Product Features:
Voltage Regulation, IC voltage reference
The Regulator keeps the bus voltage constant by controlling the alternator’s field current: increasing it when the system load increases and decreasing it when the load decreases.
Remote Voltage Sensing
By sensing the alternator’s battery terminal voltage, the ACU provides better voltage regulation and eliminates flickering charge‐meter and panel lights.
Low & Over Voltage Sensor /Indication
The LV warning light connected to pin 4 comes ON when the alternator drops off‐line, the bus voltage drops below the LV level, power to pin 3 is turned off, or the OV trips the ACU off ‐line.
Field‐to‐Ground Fault Protection (GFP)
If the alternator’s field shorts to ground, the field‐to‐ground short protector deactivates the Voltage Regulator and switches on the unit’s Trouble‐Shooting Light (TSL) red and the aircraft’s LVI.
Trouble‐Shooting Light (TSL)
The TSL (on the unit) is designed to alert the user to the condition of the Alternator / ACU system.
Over‐Voltage Protection
To protect sensitive avionics equipment and the battery, the OV protector turns off the Regulator and the alternator if the bus voltage exceeds 32V.
Other Features:
- Increased Regulator life
- Not temperature sensitive
- Improved Voltage Regulation
- Reduced panel light flicker
- Improves safety—Warns of Low voltage & OV condition
- Protects against grounded alternator field
- Identifies grounded field
- Reduce trouble‐shooting time
- Protects system loads against overexcited alternator
Click here for cross reference guide
Additional Information
| Weight | .3 lbs |
|---|---|
| Model Number |
R25400 |
| Voltage Reg. (VR) |
28.7V + 0.4V |
| Max Field Current |
5A |
| Over Voltage (OV) |
32.0V ± 0.8V |
| Low Voltage Trip (LVI) |
24.7V ± 0.5V |
| Approval Type |
FAA-STC Approved |
| Document Approval |
Log Book Entry Required |
| OEM PN: (Cessna) |
CESSNA: C611005‐0101,2,3, C611004‐0101,2, C611002‐0205 |
| Replaces OEM PN (MOONEY) |
MOONEY: C611005‐0101 |
| OEM PN (Electrodelta) |
ELECTRODELTA: VR515F, VR515G, VR500‐0101,2 |
| OEM PN: (PFT) |
PFT-LAMAR: DGR‐3, DGR5‐01, DGR5‐02 |
| Aircraft Common Name |
Skywagon, Super Skylane, Stationair, Super Cargo Master, Turbo Stationair, Centurion, Cardinal, Cardinal RG, Classic, Skyhawk, Hawk XP, Cutlass, Cutlass RG, Powermatic, Skyhawk Powermatic |
| Approved Aircraft |
CESSNA: 152, A152, F152, FA152; 172, 172N, 172P, 172RG; FR172, FR172K; R172, R172K; F172N, F172P; 180, 180K; 182, 182Q, 182R; R182,FR182,TR182, F182R,T182R; 185,A185F; 206,U206; 207, T207; 210, 210N, |
Product Reviews
Shipping & Returns
Shipping (USA)
Shipping is available via UPS or USPS and most items ship within 24 hours if the order is placed between Sunday and Thursday. Orders placed after 11am EST for USPS and after 2pm EST for UPS my not ship the same day. If your order comes in prior to that Monday through Friday, we try to get it out same day. All USPS shipments are picked up by Noon Monday through Friday. All UPS shipments are picked up by 3pm EST (sometimes earlier) Monday through Friday.
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If you are local to SkySupplyUSA (New Castle, PA - about an hour north of Pittsburgh and an hour south-east of Cleveland), please feel free to stop in during our business hours Monday - Friday 8:30am - 5pm EST. If you know exactly what item you're looking for, give us a call and we'll have your items pulled at the front counter!
We can also ship with your FedEx or UPS account number, please call us for more information on those options.
Please also note that the shipping rates for all items we sell are weight-based. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound. We realize this sometimes causes inflated shipping rates when ordering a large quantity of items, so if you feel that the estimator is giving you an outrageous shipping quote, feel free to reach out and we can double check.
Expedited Shipping (UPS Next Day, 2nd Day, or 3 Day)
Orders placed after 2 PM EST will be shipped the next business day.
UPS does not pick up on Saturday or Sunday, so all weekend orders will ship on Monday.
International Shipping
We can ship to almost any destination in the world. International customers must understand that all packages are shipped after a (3) day Review period and must clear customs in your country. The amount of time to do so varies from country to country and we have no control of the package during that time.
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Returns Policy
You must call or email for an RMA number. No refunds on unauthorized returns.
We offer a 30 day return period. Returned items must be in "brand new" condition and in its undamaged original packaging to be eligible for return. Spark plugs must be in their sealed plastic sleeves. Opened sleeved spark plugs are not returnable. There will be a 20% - 40% restocking fee on all non-defective products. The restocking fee varies from product to product. Special order items are not returnable.
You must pay the return shipping costs. If the return is a result of our error (you received an incorrect or defective item, etc.), we will refund it once the item has been returned in new condition and the issue is verified. Please note that computer software that has been opened or activated cannot be returned. Defective software will be replaced with the same product as purchased. All shipping charges will be paid by the buyer.
Refunds cannot be guaranteed for non-trackable shipping.
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If your item includes a manufacturers return policy that differs from SkySupplyUSA policies, you will need to contact them directly to resolve your issue.
