S8 Power Elements; Description - GE Multilin 369 Quick Start Manual

S8 POWER ELEMENTS

4.6 S8 Power Elements
4.6.1

Description

4–42
These protective elements rely on CTs and VTs being installed and setpoints programmed.
The power elements are only used if the 369 has option M or B installed. By convention, an
induction motor consumes Watts and vars. This condition is displayed on the 369 as
+Watts and +vars. A synchronous motor can consume Watts and vars or consume Watts
and generate vars. These conditions are displayed on the 369 as +Watts, +vars, and
+Watts, –vars respectively.
FIGURE 4–5: Power Measurement Conventions
CHAPTER 4: KEYPAD SETPOINTS
369 MOTOR MANAGEMENT RELAY – QUICKSTART GUIDE