HTFLEX33D
EN – 3
1.1. During
use
Carefully read the following recommendations and instructions:
Always de-energize circuit under test before installing flexible measuring heads.
Always inspect the connecting cable and the flexible measuring heads for damage
before using this product.
Do not use the clamp on non-insulated conductors whose potential to earth exceeds
1000V AC
Do not use the clamp outdoor
Do not expose the clamp to water splashes.
Keep the clamp gap perfectly clean
Should the clamp be unintentionally used without load (not connected to the measuring
instrument), take the clamp off the cable, wait 1 minute before connecting the clamp to
the measuring instrument, then clamp the cable again
Do not use the HTFLEX33D if is or seems damaged
2. INSTRUMENT DESCRIPTION
2.1. Introduction
HTFLEX33D is an innovative current transducer based on the Rogowsky’s principle that
combines easy use with measurement accuracy.
The HTFLEX33D current probe is similar in purpose to a CT or current transformer. The
output is an analogue voltage proportional to the AC current in the conductor. The output
signal is isolated form the hazardous conductor potentials and is exact replica of the
current waveform in the conductor. The output signal is available via a 3 pin connector
(see Fig. 1).
Shield
Fig. 1: Internal connectors scheme
