CHAPTER 4: SETPOINTS PROTECTION
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–167
VD STALL TIME @ 100% V
Range: 0.1 to 1000.0 in steps of 0.1
Default: 10.0 s
VD ACCEL. INTERSECT @ 100% V
Range: 1.50 to 20.00 in steps of 0.01
Default: 5.00 x FLA
Figure 4-55: Speed2 Thermal Model logic diagram
8940$1.cdr
WYE DELTA
VAG VAB
VBG VBC
VCG VCA
Three Phase Voltages from
VT Bank
VOLTAGE CONNECTION
Three Phase Currents
from CT bank 1
IA
IB
IC
Va
Vb
Vc
Ia
Ib
Ic
Thermal Model
Speed1 Thermal
Model settings
Speed2 Thermal
Model settings
off
on
Active
MOTOR SPEED 2
FLEXLOGIC OPERAND
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