F.W. Bell Y8100 Instruction Manual

INSTRUCTION MANUAL
Y8100 DC/AC
Current
Probe
DESCRIPTION
The F.W. Bell Y81GG DC/AC Current Probe is a clamp-on probe
that is used with a voltmeter, multi meter, or oscilloscope to read
dc, ac, or composite (ac on dc) current measurements. The jaws
on the Y81GG are designed to clamp around conductors up to
3/4
inch in diameter. The pistol shape allows safe, easy, one­
hand operation when making current measurements.
APPLICATIONS
i_ -.L_ -11le...YB. l 0G_can be used to measure any of the-iollowing:
• Ground currents ac and dc.
• Power supply ripple.
• Current distribution in multiple systems.
• Current balance in two wires ac and dc.
• Current in audio distribution systems (using 44.0 to 10.0.0 Hz
signals) .
• Starting currents without introducing impedance (imparts
negligible inductance in the mH range).
• Transformer currents.
• Battery currents.
• Current distribution and perform ripple current tests in plating
operations.
• Current transients (dc to 1 kHz) when used with an
oscilloscope.
FEATURES
As shown in Figure 1-1, major features of the Y81 .0.0 include the
following. Table 1-1 provides the specifications of the Y81 QQ.
1. Jaws - The jaws can enclose conductors up to
3/4
inch (19
mm) in diameter. Except at the core closure, the jaws are
insulated. The closure is chamfered for positive alignment and
minimum air gap. The jaws are rated for voltages up to 6QQV
dc or 48QV ac. Inspect core closure area frequently for foreign
material. Centering of conductors smaller than
3/4
inch in
diameter is desireable, but not critical for specified accuracy.
WARNING
Do not use at voltages above 600V dc or 480V ac. Avoid
snapping the jaws as this could damage the core.
2. Jaw Trigger - The jaw trigger is designed for easy, one-hand
operation and positioned for maximum protection from circuit
voltages.
3. Slide Lock - The slide lock mechanically locks the push-to ­
read switch in the on or off position.
4. Push-To-Read-Switch - The push-to-read switch turr)s the
Y81QQ on for zeroing and measurement. Switch operation
also demagnetizes the core.
5. Output Banana Jacks - The output banana jacks are color
coded red for positive and black for negative with reference
to the current direction arrow. They will accept standard dual
mi.n-anaconnector-plugs o- rTridividuaT banana plugleacrs.-- ·
6. Connection Cable - A 5-foot cable with standard dual banana
connectors is supplied. A molded tab indicates the negative
lead on the connectors.
7. Battery Compartment - The battery compartment can be
reached by removing the butt plate, which is held in place by
a single phillips screw. Contained in the battery compartment
is the battery holder, which slides out to accept four "AA" alka ­
line batteries (6 volts)
-r
~uired
for operation of the Y81 QQ .
,"OTE
Support the battery holder when removing it to prevent unnec­
essary stress on the flexible leads connected to the unit.
Cell polarity is molded into the battery holder and shouid be
carefully observed when installing batteries.
8. Zero Adjustment Thumbwheel - Used to zero the voltage
output from the Y81QQ on the meter before taking current
readings.
9. Battery-Low Indicator Light - Lights whenever battery voltage
falls below that required for proper operation. Alkaline battery
life under continuous operation is approximately 2.0 hours.
1Q. Range Switch - The range switch is a two position slide
switch for either 2QA or 2GGA operation.
11. Current Direction Arrow - A positive (+) reading on dc
indicates current in the direction of the arrow.
12. Case - The case is made of high-impact, high-dielectric,
precision-molded plastic.