||100 k ohms
||120 k ohms
||100 k ohms
||240 k ohms
(1K, 1/4 Watt pot recommended for optimum linearity, 20K permissible)
0 to 98% of line voltage.
Output will be linear within 2% of span over entire range of control.
Current Limit Range (3629 only):
Field adjustable from 30% to 105% of frame current as specified in the (Amps) term within the model number. Current limit is factory set to 105% of frame current rating.
Zero and Span Adjustments:
Multi-turn potentiometers allow zero and span adjustments of ±20% of span.
Approximately 1.5 watts per amp of current per phase will be dissipated by the controller.
3629: 208, 240, 380, 415, 480, or 575 VAC, 3 phase, @ 50/60 Hz; 3027: 208, 240 or 480 VAC 50/60 Hz +10 -15%.
32 to 132°F (0 to 55°C); 0-95% RH, non-condensing.
Heat sink to supply and load voltage 2500 volts peak. Control or command signal to supply and load voltage 1500 volts peak.
Status Indicators (3629 only):
LINE OK: Indicates power on all three phases and correct phase rotation; COMMAND: The intensity of this LED is proportional to the command signal; LOAD: The intensity of these three LEDs is proportional to the current in each leg; SHORTED SCR: Indicates when an SCR has failed in the shorted mode; OVER CURRENT: Indicates when an SCR has failed in the shorted mode.
Convection cooling on 50 amp unit. Forced air fan cooling on all others.
SCR Voltage Rating:
Peak forward and reverse voltage rating 1400V.
SCR DV/DT Rating:
200 volts/µsec minimum.
3629: Resistive, Variable resistance, Inductive, Capacitive, Transformer or Lamps; 3027: Resistive only.
200 milli-seconds. (Slew rate is the time required for the load voltage to change 63% of the value represented by the command signal.) The current limit action will change the slew rate if the load current is greater than the current rating of the SCRs.