Tesla TI4200 GPU-24-PFC User Manual page 23

3
Operating Procedures
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.
Check DC Voltage Reading at DC Receptacle Terminals
26.5 to 28 Vdc depending on state of charge.
NOTE
!
16
Unit should be disconnected from any ac power sources prior to testing.
2. Move the positive probe to the
dc positive post.
Figure 3.8.3 – Testing DC Receptacle
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.
3. Move the positive probe to the
dc negative post.
TI4200 GPU-24-PFC