GE 745 Instruction Manual page 10

IMPORTANT PROCEDURES
1.1.3 Manual Organization
1–2
Reading a lengthy instruction manual on a new product is not a task most people enjoy. To
speed things up, this introductory chapter provides guidelines for basic relay usability.
Important wiring considerations and precautions discussed in Typical Wiring on page 3–7
should be observed for reliable operation. Detailed information regarding accuracy, output
relay contact ratings, and so forth are detailed in Specifications on page 2–5. The
remainder of this manual should be read and kept for reference to ensure maximum
benefit from the 745 Transformer Protection System. For further information, please
consult your local sales representative or the factory. Comments about new features or
modifications for your specific requirements are welcome and encouraged.
Setpoints and actual values are indicated as follows in the manual:
A2 METERING LOSS OF LIFE

This 'path representation' illustrates the location of a specific actual value or setpoint with
regards to its previous menus and sub-menus. In the example above, the
WINDING TEMPERATURE actual value is shown to be an item in the
menu, which itself is an item in the
VALUES.
Sub-menu levels are entered by pressing the MESSAGE RIGHT or ENTER keys. When inside
a submenu, the MESSAGE LEFT or ESCAPE key returns to the previous sub-menu. The
MESSAGE UP and DOWN keys are used to scroll through the settings in a sub-menu. The
display indicates which keys can be used at any given point.
CHAPTER 1: GETTING STARTED
HOTTEST-SPOT WINDING TEMPERATURE

A2 METERING menu, which is an item of
745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
HOTTEST-SPOT
LOSS OF LIFE sub-
ACTUAL