Rish Insu 5Dx
17
4.10
INSULATION MEASUREMENT IN RAMP MODE
This function 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 duration, the test voltage and the number of times
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 time interval
T, keeps the value
V1 for a time T1, and finally returns to 0 (with possible discharge of the residual
voltage).
RAMP#2
:
Voltage starts from 0V, which is kept for a time T0, reaches the value V1 in a time
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 time T0, reaches the value V1 in a time
interval
T, keeps to value V1 for a time T1, and finally returns to 0 (with possible
discharge of the residual voltage).
CAUTION
The instrument may be used on installations of overvoltage category CAT IV 600V
to earth with maximum voltage 600V between inputs. Do not connect the
instrument to installations 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 respecting the safety area marked by
the hand protection (see § 4.4)
Fig. 6: Instrument connection
1.
Turn on the instrument by press the
ON/OFF/
key
2.
Press the
FUNC
key to select the RAMP function
