Global Specialties 1504 - Manual (Page 6)

DESCRIPTION
INPUT AND OUTPUT TERMINATION :
The unit works from 115 V AC/47-63 Hz single phase supply. The input is
provided through a mains cable with a three pin plug. The use of a three core
cable enables the cabinet of the unit to be properly grounded.
Output is provided on a three-pin socket and is clearly marked 0-150 V AC/4
Amps max.
METERING :
One 3-digit DPM is provided to measure
1) Output voltage
2) Leakage current and
3) Load current
Meter function is switch selectable
ON-OFF SWITCH AND FUSE :
The power ON-OFF switch is provided on the front panel. Fuse is also provided
on the front panel. Fuse rating is clearly marked.
PANEL CONTROLS :
A voltage adjust knob allows adjustment of output AC voltage from 0 to 150 V
AC. Three meter function push switches are provided to select the quantity to
be displayed on the meter.
CIRCUIT DESCRIPTION :
The circuit uses a single phase variable autotransformer to obtain an output
voltage variable from zero to 150 V AC max. This is followed by a triple shielded
isolation transformer which provides electrostatic and galvanic isolation.
Multiple shielding technique reduces primary to secondary static coupling to
below 0.005pF. The DC isolation is over 1000 M Ohms. Line leakage current
to load is 10
m A or less.