EA Technology CableData CDC2, Руководство по эксплуатации

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EA Technology CableData Collector Operating Manual 1365/L/01/1
Page 6 of 54
6 Warnings & Tips
6.1 Warnings

Do not leave any of the Current Transformers connected in place for a measurement
while a switching operation is being performed. Due to the charging of the cable
capacitance, this can create a large inrush current that may overwhelm the input
protection circuits and cause damage to the board.

Maintain safety clearances between structures at high voltage and the instrument, its
probes and the operator at all times.

Do not connect the CableData Collector to a USB hub. It is important that the
CableData Collector is connected directly to the machine it is being used on, as use
of a USB hub may result in intermittent errors.

Always take the Phase Reference Transformer in the event that it is not possible to
acquire phase information from the RFCTs. It is only possible to collect data with a
phase reference present. The CableData Collector will attempt to detect the phase
from the RFCTs used for data capture. In some cases, this may not be possible and
an alternative reference may be needed.

Only the supplied RFCT should be used with the CableData Collector. The RFCT we
supply has an integral protection circuit to protect the instruments against transients
caused by HV switching.

Only the supplied Phase Reference Transformer should be used with the CableData
Collector.

Do not insert an SD card into the SD card slot, it is currently unsupported and not
functional.

Do not insert a network cable into the Ethernet Socket, it is currently unsupported
and not functional.
6.2 Tips

The unit contains no user serviceable parts, always return to EA Technology or your
local distributor for service and repair.

The CableData Collector unit is designed to function with a mains frequency signal
present, which may occur because of imbalanced phases. The presence of higher
frequency signals may cause interference. An example of a source for an interfering
signal is a power line carrier system. These will introduce a higher frequency signal
into the power cable that may be picked up by the CableData Collector and may
reduce the accuracy of the measurements. Wherever safely possible, attempt to
eliminate any sources of higher frequency signals.

The CableData Collector contains relays inside that may make a clicking sound
shortly after power up and during data capture. This is to be expected and may occur
during normal use.