QuadTech 1855, Instruction Manual

Page: 22 / 76

Page 22 of 76 Introduction
1.4 Installation
1.4.1 Dimensions
The 1855 Capacitor Leakage Current/IR Meter unit is supplied in a bench configuration, i.e., in a
cabinet with resilient feet for placement on a table. Flip feet are attached under the front feet so
that the 1855 instrument can be tilted up for convenient operator viewing.
1855 Capacitor Leakage Current/IR Meter
(-) (+) INPUT
Q uadTech
HV
F1
F4
F3
F2
F1
F3
F2
MEAS
DISPLAY
F4
TRIGGER
MAIN
INDEX
SYSTEM
SETUP
0 1
l
<MEAS. DISPLAY: SEQ. TEST>
NEXT PAGE 1/2
RANGE
C.C
TEST V.
Lc : 1.5 mA
4.0"
101.6mm
12.50"
317.50mm
13.5"
342.9mm
14.0"
355.6mm
including
front and
rear
connectors
4.5"
114.3mm
including
feet
0.5mA
2uA
1.0V
Figure 1-4: 1855 Instrument Dimensions
1.4.2 Instrument Positioning
The 1855 instrument contains one (1) graphic display for direct readout of measured parameters.
The optimum angle for viewing is slightly down and about 10 degrees either side of center. For
bench operation the front flip feet should always be used to angle the instrument up. In bench or
rack mount applications the instrument should be positioned with consideration for ample air
flow around the rear panel fan ventilation hole. An open space of at least 3 inches (75mm) is
recommended behind the rear panel. Testing should be performed on a non-conductive surface.
An ESD mat is not a recommended test platform.
1.4.3 Power Requirements
The 1855 can be operated from a power source of 90 to 125V AC or 190 to 250V AC. Power
connection is via the rear panel through a standard receptacle. Before connecting the 3-wire
power cord between the unit and AC power source, make sure the voltage selection switches on
the rear panel (Figure 1-5) are in accordance with the power source being used. For a 90-125V
source, use a 4A 250V fuse. For a 190-250V source, use a 2A 250V fuse. Always use an outlet
that has a properly connected protection ground.