CATERPILLAR CAT 314-7755 | CDVR Digital Voltage Regulator

⚡ Product Introduction

The Caterpillar CAT 314-7755 CDVR Digital Voltage Regulator is a microprocessor-based digital voltage regulator designed for Caterpillar generator excitation and voltage-control applications. Cat specifies that this regulator maintains and limits generator voltage while helping protect electrical components from current spikes. The unit provides precise control of generator excitation and output and is used across a broad range of Cat generator and genset configurations.

The 314-7755 is associated with Cat SR4, SR5, SR4B, and SR4BHV generator platforms and numerous industrial, gas, petroleum, marine, and power-module applications. Cat’s parts information lists dimensions of approximately 10.9 × 6.4 × 3.1 inches and identifies carbon steel as the material.

CATERPILLAR CAT 314-7755

📋 Product Datasheet

Parameter	Value
Brand	Caterpillar CAT
Model	314-7755
Series	CDVR Digital Voltage Regulator
Product Name	Digital Voltage Regulator
Product Type	Microprocessor-Based Generator Voltage Regulator
Country of Origin	United States
Product Status	New / Used depending on supplied unit
Dimensions	Approx. 10.9 × 6.4 × 3.1 in
Material	Carbon Steel
Power / Application	Generator excitation and voltage regulation

Cat’s current parts information confirms the 314-7755 designation, dimensions, material, and generator-control function. The actual electrical ratings and configuration depend on the specific generator installation and should be verified against the applicable Cat documentation.

🔧 Troubleshooting & Common Problems

• Generator voltage is unstable: Check sensing connections, excitation wiring, regulator configuration, and generator operating conditions.

• Low or missing generator output: Inspect the regulator supply, sensing circuit, field connections, and associated excitation components.

• Overvoltage condition: Verify voltage-sensing wiring and regulator settings before returning the generator to service.

• Regulator does not communicate with service software: Check the applicable Cat ET version and communication connection. Cat documentation notes that newer CDVR versions may require updated Cat ET software.

• Replacement unit does not operate correctly: Confirm the exact part number, generator configuration, wiring arrangement, and programmed parameters before commissioning.

⚠️ Safety Precautions

• Disconnect and isolate generator power before servicing the voltage regulator or associated wiring.

• Generator excitation circuits can contain hazardous voltage. Do not touch terminals while the system is energized.

• Verify voltage-sensing, field, and PMG connections before applying power.

• Do not change regulator configuration parameters without understanding their effect on generator excitation and output.

• Use appropriate lockout/tagout procedures during installation and maintenance.

• Confirm compatibility with the specific Cat generator before purchase or installation. Cat notes that configuration changes can affect part compatibility.

📰 Product News & Technical Information

Cat documentation identifies 314-7755 as an earlier/current-reference CDVR part number, with 361-8010 listed as the current part number in a Cat technical publication. The same publication lists 314-7755 as the earlier CDVR part number and 361-8010 as the current CDVR part number. This means buyers replacing an existing 314-7755 should verify whether the newer regulator is applicable to their generator configuration.

Cat’s parts catalog continues to list 314-7755 with compatibility across numerous generator sets and generator platforms, including SR4, SR5, SR4B and SR4BHV. The catalog also lists applications involving C18, C32, C175, G3516, G3520, 3508, 3512, 3516 and other Cat generator configurations.

❓ Common Questions & Answers

Q: What is Caterpillar 314-7755?
A: It is a Cat CDVR digital voltage regulator used for generator excitation and voltage regulation.

Q: What does the CDVR do?
A: It controls generator excitation and helps maintain generator output voltage within the configured operating parameters.

Q: Which generators use 314-7755?
A: Cat lists SR4, SR5, SR4B and SR4BHV generators, along with many Cat generator sets and power modules.

Q: Is 314-7755 discontinued?
A: Cat technical documentation identifies 314-7755 as an earlier CDVR part number and lists 361-8010 as the current part number in that publication. Compatibility should be verified before substituting the newer number.

Q: Can 361-8010 replace 314-7755?
A: It is identified as the current CDVR part number in Cat documentation, but replacement suitability depends on the generator model, configuration, wiring, and application.

Q: What are the physical dimensions?
A: Cat lists approximately 10.9 inches long, 6.4 inches wide, and 3.1 inches high.

Q: Is 314-7755 a standalone generator controller?
A: No. It is specifically a digital voltage regulator and forms part of the generator excitation and voltage-control system.

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