R25101 Rev A

$292.00

28V Alternator Controller

SKU: ZA0011. Category: .

Product Description

28V Alternator Controller

h3>What’s included:

  • Installation Drawing
  • Warranty Card
  • Product Eligibility Catalog (PEC)
  • Troubleshooting Notes
  • Instructions For Continued Airworthiness Maintenance (ICA)

Product Features:

Voltage Regulation, IC Sense reference

The Voltage Regulator keeps the bus voltage constant by increasing the current to the alternator’s field with a system load increase, decreasing it with a load decrease.

Field-to-Ground Fault Protection (GFP)

If the alternator’s field become shorted to ground, the GFP will deactivate the Voltage Regulator, and switch on the unit’s Red TSL, and the LVI light on the instrument panel.

Battery Off-Line Voltage Regulation (BOLR)

The design of the ACU allows it to excite the field of a rotating alternator (with a minimum residual voltage) and regulate the bus voltage with the battery off-line. This allows the system to carry electrical load if the battery or the battery relay fails.

Trouble-Shooting Light (TSL)

Green, Red, Off Alerts the user to the condition of the Alternator / ACU system. TSL: RED light with the Bat & Alt switches on means there is an internal or external ground short in the alternator field circuit. TSL: GREEN light with the engine running, means there is power coming out of the ACU. With the light Green, a bus voltage of 27.3 to 28.1V (for R25101 Rev A and R25102 Rev A , 28.4 to 28.8V) indicates a system that is operating correctly, and a sustained bus voltage of 20V to 25.6V means an open alternator field or field wire. Unless the ACU is damaged, the light should be Green when the master switch is on. TSL: Off with the Master switch on and no power to the ACU (red wire, pin 1), means that one power input device (like switch, circuit breaker, or wiring). If there is voltage on the red wire (pin 1) then the ACU is damaged.

Other Features:

  • Increased Regulator life
  • Reduced panel lights flicker
  • Protects against grounded alternator field
  • ACU controls & keeps the Alternator on-line if the Bat fails
  • Identifies grounded field
  • Reduce trouble-shooting time

Additional Information

Weight .3 lbs
Model Number

R25101 Rev A

Voltage Reg. (VR)

27.7V +/- 0.4V

Max Field Current

5A

GFP

Yes

Approval Type

FAA-PMA Approved

Document Approval

Log Book Entry Required

OEM PN: (Cessna)

CESSNA: C611004-0101 + C593001-0101, C611002-0205 + C593001-0101

OEM PN (Electrodelta)

ELECTRODELTA: VR500-0101 + OS100

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, Skymaster,

Approved Aircraft

CESSNA: 152, A152, F152, FA152. 172, 172H,172N; F172; FR172K; R172, R172K; 177, 177A, 177B, 177RG; 180, 180K; 182, 182P, 182Q, F182, 182P, 182Q; R182, FR182; T182,TR182. 185,A185F. 188, A188, A188A, A

Warranty Policy

Click the links below to download warranty policy in .pdf format.

Warranty Policy (New Manufactured) PDF Requires Acrobat Reader

Warranty Policy (Recertified) PDF Requires Acrobat Reader

Cross Reference

Click the links below to download info in .pdf format.

Voltage Regulators for Alternator Systems

14V Alternator Controller Units (ACU) Cross Reference PDF Requires Acrobat Reader

28V Alternator Controller Units (ACU) Cross Reference PDF Requires Acrobat Reader

Single Engine Voltage Regulators for Generators 12A - 50A

14V Single Engine Generator Controller Units (GCU) Cross Reference PDF Requires Acrobat Reader

Twin Engine Voltage Regulators for Generators 35A - 50A

14V Twin Engine Generator Controllers Units (GCU) Cross Reference PDF Requires Acrobat Reader

28V Twin Engine Generator Controller Units (GCU) Cross Reference PDF Requires Acrobat Reader

Over-Voltage Protection Sensors/Relays For Alternator Systems

16V Over-Voltage Relays/Sensors (OVS/OVR) Cross Reference PDF Requires Acrobat Reader

32V Over-Voltage Relays/Sensors (OVS/OVR) Cross Reference PDF Requires Acrobat Reader

Equalizer (EQ) or Parallel Relay for Twin Engine Generator Systems

14V Twin Engine EQ Parallel Relay Cross Reference PDF Requires Acrobat Reader

28V Twin Engine EQ Parallel Relay Cross Reference PDF Requires Acrobat Reader

FAQ

Click the links below to download the .pdf

Connectors

Product Connector FAQ PDF Requires Acrobat Reader

General Product

GCU Cross Reference (Coming Soon)

ACU Cross Reference (Coming Soon)

OVR, OVS, Cross Reference (Coming Soon)

How To

How To Read the Cross Reference Chart FAQ (ACU) PDF Requires Acrobat Reader

How To Read the Cross Reference Chart FAQ (GCU) PDF Requires Acrobat Reader