1656 & 1657 Battery Element Tester Owner’s Manual
STS Instruments Page 21 of 88
3.3 Important Safety Precautions
ALWAYS FOLLOW RECOMMENDED SAFETY PRACTIVES WHEN OPERATING
THIS EQUIPMENT
After the equipment has been installed, a careful study should be made of the test station to
determine what, if any, safeguards are needed. It is suggested that any electrical test station
involving voltages in excess of 42.4 volts peak (approximately 30 volts RMS) should be equipped
with safeguards. These should operate both for the protection of the operating personnel and
for the protection of casual bystanders. At the minimum, safeguards should prevent the
operating personnel or casual bystanders from coming into contact with the test circuit. In the
event electrical interlocks of any sort are required, either to insure that guards are in place, or to
insure that the operator’s hands are in a safe location, we will be happy to provide suggestions
and schematics for safety interlocking our test equipment.
The test procedure should be well thought out to ensure that it adequately tests the product to
the desired criteria but that the procedure does not require the operator to perform tasks that
are unsafe. The product should never be touched during a test.
Good safety practice dictates labeling of hazards properly. Since high voltage testing can be
hazardous, the work station should be labeled. Naturally, the location of the label should be
carefully selected so that it can be placed in a location that will do the most good.
In some cases, this may be on the test instrument itself, and in others, it may be in a location
directly in front of the operator, somewhat removed from the instrument.
3.4 Initial Setup Procedure
Setup adjustments should be made with no load connected to the test leads. Proceed as
follows:
1. Insert the AC line cord into a suitable AC outlet. The 1656 and 1657 have a universal input
and will operate from any voltage between 100Vac RMS L-N and 240Vac RMS L-N.
2. Install the supplied test leads on the front panel sockets. The test leads are color coded to
match the positive and negative terminals on the 1656 or 1657 front panel.
3. Turn the unit ON using the front panel toggle switch.
4. Adjust voltage setting to desired Peak Volts reading using one of the VOLTn buttons.
5. The Quality readout with no battery cell connected to the test leads should be zero (Q = ).
6. To check the unit, set the lower trip level to 10 and the upper trip level to 1000.
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