Clearance requirements
The unique common mode voltage range of the measurement system allows it to be used in the presence of high
frequency/high voltage common mode signals. It is important to observe all precautions while using this product.
Warning: Electrical shock can occur while using this measurement system. The system is intended to isolate the
operator from hazardous input voltages (common voltages); the plastic case of the sensor head and the shield on
the sensor tip cable do not supply safe isolation. Maintain the safe clearance from the sensor head and sensor tip
cable while the measurement system is connected to the energized circuit as recommended in this document. Do
not access the RF Burn Hazard Zone while taking measurements on a live circuit.
While measuring high frequency common mode signals, there is a risk of RF burns. Refer to the following derating curve to
identify the danger areas. Measuring common mode signals within the gray shaded area can result in RF burns within 1 m
(40 in.) of the sensor head and earth ground.
Figure 2: Maximum safe handling limits for common mode voltages between the sensor head and earth ground.
The following figure shows the components of the measurement system and the potential RF burn area when working with
hazardous voltages. The RF burn area of 1 m (40 in.) is indicated by the dashed lines surrounding the sensor head.
Figure 3: RF burn hazard zone around the sensor head
Getting started
TIVP Series IsoVuTM Measurement System User Manual
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