koban KVD-01-33 Mode D'emploi page 41

17.
Electrical
Threshold Voltage:
For a single voltage detector (for example 11kV) the threshold
voltage should be in the range 0.15 X detector voltage to 0.4 X
detector voltage i.e. for 11kV, V
4.4kV.
For a detector with a two to one voltage range (for example 66
to 132kV) the threshold voltage should be in the range 0.15 X
detector maximum voltage to 0.4 X detector minimum voltage
i.e. for 66/132kV, V
For a detector with a three to one voltage range (for example
11 to 33kV) the threshold voltage should be in the range 0.1
X detector max. voltage to 0.45 X detector min. voltage i.e for
11/33kV,V
THRESHOLD
Where none of the above rules can be applied the threshold may
be set to a value agreed with the customer.
Accuracy of threshold voltage: ±5% of set level and under our
factory test and setup conditions.
Operating Time: About 3 minutes nominal with VOLTAGE NOT
PRESENT on the contact electrode.
Continuous with VOLTAGE PRESENT on the contact electrode.
Response Time: Less than 1 second.
Spark Protection:The detector will not be damaged as a result
of spark discharge while making contact with the conductor under
test.
Bridging Protection:The detector and its accessories will not
or between live parts of the installation and earth.
Current Consumption:30mA maximum.
Battery Low: 7.2V nominal (Arming via the testing/arming
button is inhibited at this voltage but self-arming from signals is
maintained down to 6.5V.)
Battery: 9 V manganese alkaline PP3-C IEC 6F22.
THRESHOLD
is in the range 19.8 to 26.4kV.
THRESHOLD
is in the range 3.3 to 4.95kV.
-15-
is in the range 1.65 to
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