Tesla TI3000 GPU-24 UAV User Manual page 21

3
Operating Procedures
Check Unit Internal Resistance (Test for Shorts)
NOTE
!
Unit should be disconnected from any ac power sources prior to testing.
As demonstrated in Figure 3.7.3 for the first test, place the positive
probe (red) on the negative terminal (C) of the DC Output Connector.
Next, place the negative probe (black) on the ground terminal (A).
The multimeter display should read OL.
As demonstrated in Figure 3.7.4 for the second test, place the
positive probe (red) on the positive terminal (B) of the DC Output
Connector. Next, place the negative probe (black) on the ground
terminal (A). The multimeter display should read OL.
Figure 3.7.2: Set multimeter to Ohms.
Figure 3.7.3 Figure 3.7.4
Check DC Voltage Reading at DC Receptacle Terminals
To verify that the power cells are fully charged, set the digital multimeter to measure dc voltage. Place the
positive probe (red) on the positive terminal (B) of the DC Output Connector, as shown in Figure 3.8.3. Next,
place the negative probe on the negative terminal (C). The multimeter display should read approximately
30.5 Vdc (± 0.5 Vdc) when power cells are fully charged and the unit is plugged into an appropriate ac
power source. When the unit is not plugged into an ac power source, the multimeter display should read
approximately 25.5 Vdc.
Figure 3.7.5: Set multimeter to Volts. Figure 3.7.6: Testing DC Voltage Reading
TI3000 GPU-24 UAV
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