Tesla TI5400 GPU-24 User Manual page 22

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. Turn on the DC Output to "ON" (see page 10). As
shown in Figure 3.8.2., place the positive probe (red) on the positive post of
the DC Output Connector and the negative probe on the negative post. The
multimeter display should read approximately 28.5 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 28.6 Vdc.
NOTE
!
Check Unit Internal Resistance (Test for Shorts)
NOTE
!
1. Place the negative probe on
the ac ground probe and the
positive probe on the case.
Better than 10 MΩ, ensure no short exists.
Negative(-) DC receptacle terminal and unit case.
Positive (+) DC receptacle terminal and unit case.
TI5400 GPU-24
If unit is left charging after the batteries are fully charged, the unit will enter a
standby mode. The voltage will drop from 28.60 to 28.10 volts (±0.10).
When a load greater than 2 amps is applied, the unit will return to normal
operation.
Unit should be disconnected from any ac power sources prior to testing.
Turn the DC output "ON".
2. Move the positive probe to
the dc positive post.
Operating Procedures
Figure 3.9.2 – Testing DC Receptacle
3. Move the positive probe to
the dc negative post.
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