PLATE 1990786 - Caterpillar

The 5P300 Electrical Tester can be used for test of 6, 8 and 12 volt batteries and 12 or 24 volt vehicle electrical systems. Instructions for the four most common tests are inside the lid of the electrical tester. If a starter current draw test is to be made, see Special Instruction Form SEHS7494 for the current draw of a specific machine. To do a complete battery test, see Special Instruction Form SMHS7633 "BATTERY TEST PROCEDURE".
1. AMMETER ZERO SET2. AMMETER RANGE SELECTOR3. VOLTMETER RANGE SELECTOR4. FIELD CONTROL5. CARBON PILE CONTROL6. CLAMP-ON AMMETER PICKUP7. AMMETER POWER LEADS8. EXTERNAL VOLTMETER LEADS (EXT VOLTS)9. FIELD LEADS10. LOAD LEADS (9S3155 POS., 9S3156 NEG.)battery cell:The part of a battery that changes chemical energy into electrical energy.biasing circuitry:A circuit which keeps the correct amount of voltage for the operation of a transistor.calibration:The act of calibrating - to make an adjustment to an instrument to a standard position.circuit breaker:An automatic switch used to open a circuit.cranking voltage:The voltage needed by a starter to turn the crankshaft of an engine.current draw:The amount of current needed for the operation of a component.directly proportional:A value that increases or decreases at the same ratio as another value increases or decreases.dropping and calibrating resistors:Resistors used to keep an accurate reading on an instrument.electrical potential:The electrical energy available at some point in a circuit.field:A space around a conductor filled with magnetic lines of force when there is current flow.field collapse:The sudden removal of voltage from the field windings of a generator.flux density:A measurement of the strength of a magnetic field.gain:An increase of a value due to a circuit or part of a circuit.gain compensating resistor:Resistors which are used to keep a specific gain in a circuit.Hall Effect Transducer:A specific type of transducer.leads:Wires which connect an instrument to the point to be measured.linearity:An output directly proportional to an input.magnetic field:The area around a current carrying conductor having the characteristics of a magnet.offset voltage:A voltage which is used to keep a reference voltage of a component at a value other than zero.offset voltage expanded accuracy scale:A meter whose scale has a small range not starting at zero but one that can be read very accurately.short circuit:A circuit that has a connection between two or more components that is not desired.simulate:To give the effect of a specified condition.switching:Turning the knob of a switch from one position to another.voltage drop:A decrease in voltage between two points in a circuit.windings:Layers of wire around a core.Specifications
AMMETER Range: 0 to 100 Amps DC and 0 to 1000 Amps DC full scale. Accuracy: 5% of full scale at 70°F (21°C). 12% of full scale over 0°F to 150°F (-17°C to 66°C) range. VOLTMETER Range: Internal - 9 to 18 VDC and 18 to 36 VDC. External - 0 to 3 VDC and 0 to 12 VDC.Accuracy: 3% of full scale at 70°F (21°C). 4% of full scale over 0°F to 150°F (-17°C to 66°C) range. LOAD UNIT Load Test: 6VDC, 8VDC and 12VDC batteries. Minimum