Trade.Information

Product Name: KNOW TRIP POWER QUALITY

Product Description

Contactor dropout, because of power line brownouts, will be eliminated when a KnowTrip^® is added to the contactor. The KnowTrip^® is a patented device manufactured by SCR Controls, Inc., Matthews, NC, under license from Duke Energy.

A contactor with the KnowTrip^® attached will not drop out until the line voltage has dropped below 30VAC (All Model 120's). After the contactor has dropped out, it will not pull in again until the line voltage exceeds 70VAC (All Model 120's). The hysteresis prevents chatter and contactor. coil burnout.

SPECIFICATIONS:

INSTALLATION:

• Turn off power and measure the contactor coil resistance.
• Models 120/A/B/HP and 240/A/B skip to step 6.
• MODEL 480 ONLY:
  • If your coil resistance is 150 ohms or less you must install the RC4 line suppressor (go to step 4).
  • If your coil resistance is more than 150 ohms you do not need the RC4 (go to step 6).
• Remove incoming power wires A and B (see Figure 1) from the contactor coil and attach them to the black wires from RC4 (see Figure 3).
• Connect the yellow wires of the RC4 to the yellow wires of the Model 480. Skip to step 7.
• Remove incoming power wires A and B (see Figure 1) from the contactor coil and attach them to the yellow wires of the KnowTrip® (see Figure 2).
• Connect the red wires from KnowTrip^® to the contactor coil.
• Mount in desired location near contactor.
• MODEL 480 AND 240 ONLY: Use a small screwdriver and adjust the potentiometer to match the contactor coils resistance (see Figure 4). If you do not know the coil resistance leave the potentiometer fully counter clockwise (CCW). The KnowTrip^® may not work if it is not adjusted properly. To better set the potentiometer, monitor the contactor to see if it drops out. If it does, increase (CW) the setting 1/8 of a turn at a time until the contactor no longer drops out (DO NOT exceed 3/8 turn past recommend setting).
  

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