Siemens Short-CircuitTest Open-CircuitTest, L-828CCRs LC-Type4, 7.5, and 10 kW/6.6 A/60 Hz

Models: L-828

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Short-Circuit Test

L-828 CCRs LC-Type (4, 7.5, and 10 kW/6.6 A/60 Hz)

Maintenance

2. Maintenance Schedule

(contd.)

Short-Circuit Test

Open-Circuit Test

WARNING: Since high open-circuit voltages may result by opening the primary of a series lighting circuit, only personnel authorized to work on high-voltage equipment should be allowed to perform the short-circuit test.

To perform the short-circuit test, perform the following procedure:

1.Remove input power to the regulator (turn off disconnect switch or main circuit breaker) and turn the rotary switch to OFF.

2.Remove leads from output terminals and bushings. Use AWG 8 or larger wire to short output bushings.

3.Energize the regulator and turn the rotary selector switch to the lowest brightness step (B1 for 5-Step, B10 for 3-Step) and then to the remaining brightness steps. Check the output current on the ammeter at each step.

NOTE: The output current should be within the tolerance given in Table 2-8. The panel meter is intended to indicate function. Any calibrations should be performed with a calibrated true RMS current meter.

4.If the output current is not within the limits specified in

Table 2-7, check the input voltage to the regulator. The supply voltage should be within –5% to +10% of the nominal input voltage given on the regulator nameplate. Refer to Adjustment Procedures in the Operation section.

5.Turn off disconnect switch or main circuit breaker to remove input power to regulator.

6.Disconnect the shorting jumper and reconnect output cables.

7.Close input-power disconnect switch or main circuit breaker.

WARNING: Since high open-circuit voltages may result by opening the primary of a series lighting circuit, only personnel authorized to work on high-voltage equipment should be allowed to perform the open-circuit test.

To perform the open-circuit test, perform the following procedure:

1.Remove input power to regulator (turn off disconnect switch or main circuit breaker) and turn the rotary switch to OFF.

2.Disconnect cables from the output terminals and bushings.

2002 Siemens Airfield Solutions, Incorporated

96A0104B

Page 5-3

All rights reserved

Issued 6/02

 

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Siemens manual Short-CircuitTest Open-CircuitTest, L-828CCRs LC-Type4, 7.5, and 10 kW/6.6 A/60 Hz, Maintenance