Flywheel Precharge Resistors
Description
Show/hide table
Illustration 1 | g01284628 |
(1) Flywheel Precharge Resistors |
The Flywheel precharge resistors (1) are part of the Flywheel DC bus precharge circuit. The resistors (1) limit the inrush current during precharge.
The precharge circuit allows the system to charge the DC bus only when the system is isolated from the DC bus. The precharge circuit is not used in normal operation.
The Flywheel DC bus precharge circuit contains two resistors. Each resistor (1) is a hollow tube with insulating spacers on both ends. The resistors (1) are connected to the cabinet for the flywheel by a metal rod that extends through the middle of the tube. The rod connects with two nuts to the metal bracket that is attached to the cabinet.
Show/hide table
Illustration 2 | g01284629 |
Precharge Resistors |
Caterpillar Information System:
3512C Engine for Caterpillar Built Machines Event Code List
UPS 1000S/ UPS 1200S Uninterruptible Power Supplys Diode Bridge
G3520C and G3520E Generator Set Engines Diagnostic Trouble Codes
3512C Engine for Caterpillar Built Machines Diagnostic Code List
3500 Generator Sets Overhaul Considerations
UPS 1000S/ UPS 1200S Uninterruptible Power Supplys Flywheel Precharge Contactor (K1, K2)
3500B Industrial Engine Speed Sensor - Clean/Inspect
UPS 1000S/ UPS 1200S Uninterruptible Power Supplys Vacuum Pump Oil - Change
UPS 1000S/ UPS 1200S Uninterruptible Power Supplys CT Interface PWA
UPS 1000S/ UPS 1200S Uninterruptible Power Supplys Bearing Preload - Check
G3500 A3 Engines Gas Engine Ignition
UPS 1000S/ UPS 1200S Uninterruptible Power Supplys General Purpose Interface PWA (Flywheel Cabinet)
3500B Industrial Engine Before Starting Engine
UPS 1000S/ UPS 1200S Uninterruptible Power Supplys Flywheel Transformer (T1)
3512C Engine for Caterpillar Built Machines System Overview
UPS 1000S/ UPS 1200S Uninterruptible Power Supplys Circuit Breaker
G3500 A3 Engines Turbocharger
UPS 1000S/ UPS 1200S Uninterruptible Power Supplys DC Bus Disconnect Switch
UPS 1000S/ UPS 1200S Uninterruptible Power Supplys Hall Current Transformer
G3500 A3 Engines Turbocharger
G3500 A3 Engines Exhaust Manifold - Water cooled
C15 Petroleum Generator Set Engines Valve Mechanism
C175-16 Locomotive Engine Cold Mode Operation
UPS 1000S/ UPS 1200S Uninterruptible Power Supplys DC Bus Interface PWA