17
4.10
INSULATION MEASUREMENT IN RAMP MODE
This func on is performed in compliance with standard IEC/ EN61557-2. The RAMP mode allows
choosing among three different types of ramps:
RAMP#1
RAMP#2
RAMP#3
For each type of ramp, it is possible to set the dura on, the test voltage and the number of mes
the ramp is repeated (§ 4.10.1, § 4.10.2, § 4.10.3).
RAMP#1
:
Voltage starts from 0V, reaches the value V1 in a me interval T, keeps the value
V1 for a me T1, and finally returns to 0 (with possible discharge of the residual
voltage).
RAMP#2
:
Voltage starts from 0V, which is kept for a me T0, reaches the value V1 in a me
interval T, and finally returns to 0 (with possible discharge of the residual voltage).
RAMP#3
:
Voltage starts from 0V, which is kept for a me T0, reaches the value V1 in a me
interval T, keeps to value V1 for a me T1, and finally returns to 0 (with possible
discharge of the residual voltage).
CAUTION
The instrument may be used on installa ons of overvoltage category CAT IV 600V
to earth with maximum voltage 600V between inputs. Do not connect the
instrument to installa ons with voltages exceeding the limit values indicated in
this manual. If these limit values are exceeded, the operator may be exposed to
electrical shocks and the instrument could get damaged
Always connect the measuring leads to the instrument and to the alligator clips
with the accessories disconnected from the system
It is recommended to hold the alligator clip respec ng the safety area marked by
the hand protec on (see § 4.4)
Fig. 6: Instrument connec on
1.
Turn on the instrument by press the
ON/OFF/
key
2.
Press the
FUNC
key to select the RAMP func on