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26 QPAC User's Guide Appendix

Specications

QPAC Specications

Operation

• Modular control base with plug-in card and transformer

• Plug-in control cards

Solid-state contactor, Å (ac) or Î (dc) input

Burst re control, xed or variable time base

Phase angle re control

Phase angle control with soft start and current limiting

• Plug-in transformers (50/60Hz)

• 120, 208, 240, 277, 380, 415, 480, 575VÅ(ac) operation

Power bases

• Single-phase (Q01), 1 pair of SCRs

• Three-phase (Q32), 2-leg control, 2 pair SCRs. Resistive load only, burst

ring only.

• Three-phase (Q33), 3 pair hybrid SCRs/diodes. Recommended for phase

angle only with balanced load.

• 120V~ (ac) through 575VÅ (ac)

• 150 through 1,000 amps per switched leg.

Agency Approvals

• UL 508 listed and cULus up to 1,000 amps on Q01 and Q32 models, File

#E73741.

• UL 508 listed and cULus up to 300 amps only on Q33 models, File

E73741.

SCCR - Short Circuit Rating

• UL witness tested to 200,000A available fault current Q01, Q32 150-1000A

to 480VÅ (ac) Q33 units and over 480VÅ (ac) units not tested

Control Card Inputs

CA Solid-state contactor, ac input

• 120VÅ (ac) @ 30mA minimum

• Å(ac) signal input sources (i.e., triacs or mechanical relay outputs with

noise suppression) require customer supplied resistors across the power

controller Å(ac) command signal input terminals to prevent false ring.

24VÅ (ac) input, 200Ω/10 watts typical;

120VÅ (ac) input, 1kΩ/25 watts typical;

240VÅ (ac) input, two 1kΩ/25 watts in series typical

CD Solid-state contactor, dc input

• On, 4 to 10VÎ (dc) @ 0.5mA; off, 0.5VÎ (dc)

• Built-in noise reduction network

BF Burst ring control xed time base

• Process input factory set @ 4 to 20mAÎ (dc)

• Input impedance 250Ω (clip resistor for 5kΩ voltage input), or manual con-

trol input

• Time base 4 seconds (clip resistor for 1 sec)

BV Burst ring control, variable time base

• Process input factory set @ 4 to 20mAÎ (dc)

• Input impedance 250Ω (clip resistor for 5kΩ voltage input), or manual con-

trol input

AF Phase angle control

• Process input factory set @ 4 to 20mAÎ (dc)

• Input impedance 250Ω (move jumper for 5kΩ voltage input), or manual

control input

• Soft start approximately 6 seconds upon power-up, 1 second upon set

point change

AL Phase angle control with current limit

• Process input factory set @ 4 to 20mAÎ (dc)

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