LPD-425A-FM HV Power Supply

Voltage range: 0-250VDC

Max current at Ambient of:

30'C

40'C

50'C

60'C

0.13

0.12

0.11

0.10

REGULATED VOLTAGE OUTPUT

  • Regulation (line)

0. 01 percent plus 1. 0 millivolt for input variations from 105-132 or 132-105 volts AC
  • Regulation (load)

0. 01 percent plus 1. 0 millivolt for load variations from no load to full load or full load to no load

Remote Programming

  • External Resistor

Nominal 200 ohms/volt output
  • Programming Voltage

One-to-one voltage change

Ripple and Noise

500 microvolts (or 1 mv for LPD-425FM) rms; 1. 5 millivolts (or 3 mv for LPD-425FM) peak-to-peak with either positive or negative terminal grounded

Temperature Coefficient

Output change in voltage less than (0. 015% + 0. 5 mv) /'C

DC OUTPUT

Current regulated for line and load; automatic crossover with voltage limit
  • Multi-Current Ranges

Current range must be chosen to suit the appropriate maximum ambient temperature. Current ratings apply for entire voltage range. For maximum current range see Table II Minimum current 1% of 30' ambient rating in Table II or 5 ma., whichever is greater.
  • Voltage Range

For voltage range see Table I; voltage ratings apply for entire current range.

REGULATED CURRENT OUTPUT; AUTOMATIC CROSSOVER

Regulation (line)

5 milliamperes for line variations from 105-132 or 132-105 volts AC

Regulation (load)

5 milliamperes for load voltage changes from 0 to max. or max. to 0 volts DC

AC INPUT

105-132 volts AC at 47-440 Hz. For input power see Table III. Ratings apply for 57-63 Hz; derate current 10% for 47-53 Hz input; for other input frequencies consult factory.

Input Power*

115 watts
*With output loaded to full 30 C rating and input voltage 132 volts AC, 60 Hz.

OVERLOAD PROTECTION

Thermal

Thermostat, resets automatically when over- temperature condition is eliminated

Electrical

  • External

Adjustable, automatic, electronic current- limiting circuit, settable to 105 percent of rated current; limits output current to preset limit for protection of load and power supply when external overloads and direct shorts occur
  • Internal

Fuse, "SLO-BLO", 3AG; fuse F1 protects the AC input circuit. Overload of the supply does not cause fuse failure.

Fuse F2 provides protection against internal circuit failure in conjunction with overvoltage protector option

INPUT AND OUTPUT CONNECTIONS

Heavy duty terminal block on rear of chassis with 5-foot, 3-wire detachable line cord for all models; five-way binding posts provide for additional positive (+), ground, and negative (-) DC output connections, on front panel of all models .

OPERATING AMBIENT TEMPERATURE RANGE AND DUTY CYCLE

Continuous duty from O'C to 60'C ambient with correspond- ing load current ratings for all mades of operation

STORAGE TEMPERATURE
(non-operating)

-55 C to +85 C

METERS

Voltmeter and ammeter on all models.

CONTROLS

  • DC output controls

Coarse and fine voltage and current controls (single ten turn controls for models LPD-424AFM and LPD-425AFM) permit adjustment of DC output; located on front panel of all models
  • Binding Posts (+) (-) (GND)

Five-way binding posts on all models.
  • Remote Sensing

Provision is made for remote sensing to eliminate effect of power output lead resistance on DC regulation.

Power

Panel mounted switch and indicator light for all units

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