Time Electronics 5069 Insulation Tester Calibrator - Manual (Page 7)

7
5069 Technical Manual 7
5.
5069 Ins -C al P rocedural Notes
1. Always remove the battery charger leads from both instruments before starting set up.
2. Use only the measuring leads supplied with the Unit Under Test or those supplied
with the 5069. When checking high resistance values the leads may pick up electrical
interference, which can cause a disturbance to the readings obtained. Some
manufactures fit a guard connection for use with dedicated leads, this will stabilize the
readings.
3. It is not recommended to operate the resistance decade switches while a test is
made. This will not automatically do any damage but may cause arcing and create
transients which could give false readings on the UUT display due to the fact that the
switch is break before make between each resistor. This will ensure that contact arc is
suppressed with high relative humidity.
4. Avoid opening the 5069 case lid in the rain or in steamy conditions for the moisture will
impair the readings.