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QPAC User's Guide 5Chapter 1: Starting Out

Starting Out

on any voltage from 120 to 575VÅ (ac). The plug-in Control Card sets the

QPAC’s ring mode. Control Cards are available in solid-state contactor, burst

ring (zero cross) or phase angle ring with a wide variety of options. This

modular approach, using a standard Power Base with plug-in transformers

and Control Cards, allows power control users, distributors and OEMs to

maintain minimum inventories while still providing rapid service.

The different QPACs provide the types of power control needed for differ-

ent power sources and loads. The QPAC-01 is designed for all single-phase

power sources and loads. The QPAC-32 is for three-phase zero cross ap-

plications such as resistance heating elements, balanced or unbalanced. The

QPAC-33 is best suited for balanced three-phase, phase angle applications

requiring soft start or current limiting, or with inductive loads.

Steps To Put Your Power Control To Work

To put your QPAC to work, we suggest the following steps:

• Read the User's Guide.

• Plan your installation and wiring.

• Mount the QPAC.

• Wire your QPAC to the system.

• Start the system and, if applicable, adjust the bias and gain on the QPAC.

• That's all there is to it!

QPAC Modularity

Overview.

Control Cards

• Solid-state contactor, ac input, CA

• Solid-state contactor, dc input, CD

• Burst ring (zero cross) xed time base, BF

• Burst ring (zero cross) variable time base, BV

• Phase angle control, AF *

• Phase angle control with current limiting, AL *

* Note: For 1Ø and 3Ø, 3-leg controls only; not for

3Ø, 3-leg controls.

Power Bases With Motherboards

• QPAC-01: 1Ø, 150 to 1,000A

• QPAC-32: 3Ø, 2-leg, 150 to 1,000A

• QPAC-33: 3Ø, 3-leg, 150 to 1,000A

Plug-in transformers (50/60 Hz.)

• 120VÅ (ac)

• 208/240VÅ (ac)

• 380VÅ (ac)

• 415VÅ (ac)

• 480VÅ (ac)

• 575VÅ (ac)

1 2 3 4 5 6 7 8 9 10 ... 33 34

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