Vanguard Tri-Phase - Manual (Page 2)

TRI-PHASE OPERATING™ INSTRUCTIONS
2
SAFETY WARNINGS AND CAUTIONS
Only trained operators shall use this device.
All transformers under test shall be off line and fully isolated.
Always ground the TRI-PHASE™ to a substation ground before connecting the test cables to
a transformer
Do Not Modify Test Equipment
Because of the risk of introducing unknown hazards, do not install substitute parts or perform any
unauthorized modifications to any TRI-PHASE™ test device. To ensure that all designed safety
features are maintained it is recommended that repairs be performed only by Vanguard Instruments
Co. factory personnel or by an authorized repair service. Unauthorized modifications will cause
serious safety hazards and will nullify the manufacturer's warranty.
Follow Exact Operating Procedures
Any deviation from the procedures described in this operator’s manual may create safety hazards,
damage the TRI-PHASE™ test device or cause errors in the test results. Vanguard Instruments Co.,
Inc. assumes no liability for unsafe or improper use of the TRI-PHASE™.