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Home / Engine Parts / Voltage Regulators /Generator Control Unit 14 Volt 20 Amp FAA PMA Replacement
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Generator Control Unit 14 Volt 20 Amp FAA PMA Replacement

2 Reviews 0 Answered Questions
$642.00/Each
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Part# 07-00617
MFR Model# G1200N

Overview

Note: Manufacturer C of C not available on Zeftronics stocked units. Zeftronics C of C available via special order only. If certs are required, please add part # 07-00000 with your order (See Accessories).

14V, 20A Generator Controller Unit: Delco Remy Type A Generator System Voltage Regulator G1200N 14V 20A Delco Remy Generator Voltage Regulator PMA Replacement.

What’s included:
  • Installation Drawing
  • Warranty Card
  • Product Eligibility Catalog (PEC)
  • Troubleshooting Notes
  • Instructions For Continued
    • Airworthiness Maintenance (ICA)
Voltage Regulation, IC Sense Referenced
    The Voltage Regulator (VR) controls the Generator’s field to keep the aircraft electrical system voltage at a specific level. This controller has a “Type A” regulator which excites the field of the alternator by providing controlled ground to one side of the field (F), with the other side internally connected to the armature.
Electronic Controlled Generator Build-up / Automatic Field Flashing
    The Generator Build-up function allows the rotating generator to build-up its output from a low residual voltage to the system’s voltage regulation point.

G1200N 14V 20A Delco Remy Generator Voltage Regulator PMA Replacement

Electronics Field Controller/Switching
    The VR electronics switch turns the field current on/off so fast (several times a second) that the output voltage of the generator stays at the VR set point. When the generator’s output voltage exceeds the VR set point, the switch opens, current flow stops, and the generator’s output decreases.
Current Limit, IC Sensed Controlled
    The Current Limiter (CL) controls the maximum output current the generator can produce. It turn off the field excitation when the output current exceed the CL set point (determined by the generator’s current rating). It allows normal field excitation when the generator output is below the GCU CL set point.
Reverse Current Protection
    The Reverse Current (RC) Protection circuit blocks the battery current from going back to the generator. It allows current to flow only from the generator to the battery and system.
GCU induced Over Voltage (OV) Protected
    The GCU’s design will cause the field current path (between the field and ground) to open if the field control device becomes internally ground shorted. This means that the GCU will not induce Over-Voltage (OV) problem into the system. The GCU does not protect the system against externally induced OV faults.
Trouble-Shooting Lights on Unit
    The on-unit system Trouble-Shooting Lights, TSL, identify how the system is operating and, helps with system testing and troubleshooting. The lights indicate Generator Off/On-line (GO, GREEN), Voltage Regulation (VR, GREEN), Current Limit (CL, RED), and Parallel (EQ, or Load sharing, GREEN).
Other Features:
  • Footprint Compatible to Delco-Remy’s VR
  • Increase Regulator Life
  • Not Temperature Sensitive
  • Prevents Regulator cycling at low RPM
  • Eliminate Regulator Noise
  • More Precise Current Limit
  • Prevents Battery Current Flowing to the Generator
  • GCU will not cause OV fault in the system
Reduce Trouble-Shooting Time

Eligibility

  • OEM PN(Delco-Remy): 1118736, 1118904, 1119226
  • OEM PN(Electrodelta): VR300-14-20
  • OEM PN(Cessna): 0413205-4, 0413205-5, 0413205-12
  • Approved Aircraft CESSNA: 150, 150A, 150B, 150C, 150D, 150E, 150F, 150G, 150H, 172, 172A, 172B, 172C, 172D, 172E, 172F, 172G, 172H, 175, 175A, 175B, 175C

Specifications

  • Weight 1 lbs
  • Voltage Reg. (VR)14.2V ± 0.4V
  • Max Field Current 3A
  • Document Approval Log Book Entry Required
  • Accessories
  • Frequently Purchased With
  • Customers Also Viewed
  • Related Items

Reviews

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There are a good set of instructions and a trouble shooting guide provided with this unit. However there is a discrepancy between the description on this web site and the instructions that require a verification of positive generator output (a negative requires field flashing which this description says is automatic). The mounting holes and terminal attachments all lined up well with the previous old style voltage regulator installed on a 1956 Cessna 172. Replacement was very easy.

Farnworth A
August 4, 2018

Easy installation. Better design than vibrator type GCU.

Allan M
February 6, 2020

Q&A

Please note, Aircraft Spruce Canada's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Canada assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

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