Multilin SR469 - Reverse Power; Torque Setup

S10 POWER ELEMENTS 4. SETPOINT PROGRAMMING
4-62
4.11.5
REVERSE POWER
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If enabled, once the magnitude of 3∅ total power exceeds the Pickup Level in the reverse direction (negative kW) for a period of time
specified by the Delay, a trip or alarm will occur.
NOTE:
The minimum magnitude of power measurement is determined by the phase CT minimum of 5 % rated CT primary. If the level
for reverse power is set below that level, a trip or alarm will only occur once the phase current exceeds the 5% cutoff.
4.11.6
TORQUE SETUP
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FUNCTION:
Before torque can be determined for a motor the motors stator resistance and number of pole pairs must be entered here. The base
stator resistance can be determined from the motor’s rated voltage and rated current. The torque metering is intended for induction mo-
tors only. In addition, only positive torque is calculated. Please consult motor specification for the stator resistance and the pole pairs.
The default unit for torque is SI unit of Newton-meter. The torque unit is selectable to either Newton-meter or foot-pound.
Note: 1 Nm = 0.738 ftlb