Vanguard LTCA-10_40 - Manual (Page 15)

LTCA-10/LTCA-40 USER’S MANUAL
15
5.0 OPERATING PROCEDURES
The LTCA-10/40 is simple to operate and only requires the selection of choices from display
menus and responding to displayed prompts. However, first-time operators should review the
following operating procedures to become familiar with all LTCA-10/40 operations and the
logical branching for various test options. More experienced operators may use these procedures
as a handy help and reference guide.
5.1 Typical Connections to a Load Tap Changer (LTC)
Figure 3.0 Typical Connections to a Load Tap Changer (LTC)
5.2 LTCA-10 Cable Connections
WARNING
Do not touch or disconnect any test lead that is connected to a transformer
terminal while high current is being conducted during a test. Failure to heed this
warning can result in electrical shock to personnel and/or damage to the
equipment.
Figure 4.0 Typical LTCA-10 Connection Diagram (Dynamic Resistance Test)
WARNING
After discharge, always disconnect test clips slowly from transformer bushings
to prevent an accidental flash-over.