Electric Drive
What is the purpose of the contactor tray ?
Connects DC bus to the retarding grid – to provide retarding and also at shut down to dissipate voltage
ATAAC
Air to Air aftercooler
Which way does a CAT diesel engine rotate?
Rotation from Flywheel End Counterclockwise
How often do you replace your hardhat?
No more than two years of regular use or five years from the date of manufacture
How many KPA's in 1 PSI?
6.89476
What does RGBI stand for and what does it do?
Retarder Grib Blower Inverter
– inverts power from retarding grid from DC to AC to power retarding grid fan motor
NRS
NOx Reduction System
Who invented the Caterpillar engine?
Where are the defibrillators at the MSF located?
At the parts wicket and in main MSF hallway
How many volts in 10 Kilovolts?
10000 volts
How many resistor circuits are in the retarding grid?
Resistors in the retarding grid – 2 grids – one for the contactor one for the Chopper module
EFR
electric field regulator
When was the first CAT engine made?
What is the first step when working on the inverter cabinet, Generator, Retarder grid, Traction motors?
De-energize
How is heat measured?
As a form of energy, heat has the unit joule (J) in the International System of Units (SI). In addition, many applied branches of engineering use other, traditional units, such as the British thermal unit (BTU) and the calorie. The standard unit for the rate of heating is the watt (W), defined as one joule per second.
What is the purpose of the Phase modules?
To invert power from the DC bus to a variable AC sin wave – controls speed (frequency) direction ( phasing ) torque ( amplitude )
COMPASS
Complete Operation, Maintenance, Performance, and Security System
What is the largest CAT engine?
Caterpillar C175-20
The 106-liter 6,456ci V20 turbo diesel engine is water-cooled. It has four turbochargers producing 4,000 horsepower at 1,800 rpm and an astonishing 16,474 pound-foot of torque — because a truck literally as big as a house needs a powerplant equal to the task.
How far do you need to stay away from the highwall?
Twice the height of the highwall
How is horsepower calculated?
Horsepower refers to the power an engine produces. It's calculated through the power needed to move 550 pounds one foot in one second or by the power needs to move 33,000 pounds one foot in one minute.
does the exciter armature a rotate or is it stationary – and what type of voltage does it produce
– rotate – AC
ACERT
Advanced Combustion Emission Reduction Technology
What is the smallest CAT engine?
Cat® C0.5 Diesel Engine Industrial
The Cat® C0.5 Industrial Diesel Engine is offered in ratings ranging from 4.1-6.4 bkW (5.5-8.6 bhp) @ 2000-2800 rpm. These ratings meet U.S. EPA Tier 4 Final emission standards. Ratings: 8.2-10.2 bkW (11.0-13.7 bhp) @ 2800- 3600 rpm are also available for Europe and, depending on applicable emission standards, may be introduced in other regulated areas. Nonroad engines less than 19 kW (25 hp) are not currently subject to EU emission standards. Industries and applications powered by C0.5 engines include: Auxiliary Power Units, Compactors/Rollers, Mobile Earthmoving Equipment, Mobile Light Towers and Turf and Landscaping.
What is the mine drive hierarchy?
1: Emergency vehicles
2: Rigid frame haul trucks
3: Support equipment
4: Light vehicles
how many foot pounds is 1000 newton meters?
737.5621 lb-ft