HOUSING 6K0053 - Caterpillar

Control Panel
(3) Frequency meter. (4) DC voltmeter. (6) Ammeter voltmeter phase selector switch. (8) Panel light switch. (9) Emergency stop push button. (10) Voltage adjust rheostat. (11) Governor Switch.Frequency Meter
The frequency meter shows the frequency in hertz (cycles per second) of the electricity made when the generator set is in operation. There is a direct relation between the frequency of the electricity and the rpm of the generator set, as shown in the following formula: An optional frequency meter resistor is required for generator operating voltages exceeding 240 VAC.Voltage Adjustment Rheostat
The voltage adjust rheostat is located on the panel below the voltmeter. It is used to adjust the voltage output of the generator. This rheostat takes the place of the voltage level rheostat located on the generator voltage regulator assembly. When the optional rheostat is used on VR3 and VR4 regulators, the jumper wire connecting terminal four and terminal seven is removed.Emergency Stop Push Button
This button is red in color. It is used to shutdown the engine in an emergency. If the emergency stop push button (ESPB) is used, the overspeed light (OSL) will light. The OSL and any other fault lights cannot be reset by way of the engine control switch while the ESPB is in. After the ESPB is pushed in, it will remain pushed in until reset.
To prevent personal injury due to accidental starting of the engine, disconnect the batteries before doing maintenance or repair work.
To reset the ESPB, rotate the knob in the direction shown on the ESPB. The button will then move out from the panel.Ammeter-Voltmeter Selector Switch
The ammeter-voltmeter selector (AVS) switch has four positions. In the zero position AVS switch contacts (9-10), (13-14) and (17-18) are closed. There is no reading on either the voltmeter or ammeter. See AC schematic (with optional ammeter, frequency meter and AVS)When the AVS is in position one, contacts (3-4), (5-6), (11-12), (13-14) and (17-18) are closed. The voltmeter will indicate the potential difference between T1 and T2. The ammeter will indicate the current flowing in phase 1 (T1/U).When the AVS is in position two, contacts (1-2), (7-8), (9-10), (15-16) and (17-18) are closed. The voltmeter will indicate the potential difference between T2 and T3. The ammeter will indicate the current flowing in phase 2 (T2/V).When the AVS is in position three, contacts (5-6), (7-8), (9-10), (13-14) and (19-20) are closed. The voltmeter will indicate the potential difference between T1 and T3. The ammeter will indicate the current flowing in phase 3 (T3/W).AC Ammeter
The AC ammeter gives an indication, in amperes, of the current from each phase of the generator to the load. The AVS connects the ammeter to the current transformers (CT1, CT2 or CT3) on phases (T1/U, T2/V or T3/W) respectively. The CT's transform the actual line current, in its respective phase lead, to a level (approximately 0 to 5 amperes) within the input range of the ammeter. The ammeter is calibrated to give an indication of the actual current flow in one phase of