HT instruments SOLAR300N - Manual (Page 177)

SOLAR300 - SOLAR300N
EN - 175
7.12. USING THE METER IN A THREE PHASE 4 WIRE SYSTEM
CAUTION
 The maximum voltage between inputs D1, D2, A1, A2 and A3 is 1000V /
CAT IV 600V to earth. Do not measure voltages exceeding the limits
indicated in this manual. If these voltage limit values are exceeded, the
user may be exposed to electrical shocks and the instrument could get
damaged
 If possible, before connecting the meter to the electrical equipment under
test turn the power supply off
Fig. 255: Meter connection in a three phase 4-wire system
1. Check and modify the basic settings of meter if necessary (see § 5.3.1) Set 4WIRE
system option.
2. Connect voltage test leads on Phases L1, L2, L3, Neutral and Ground cables
considering the colours as shown in Fig. 255. Verify the result “123” at display
relative to a correct phase sequence indication (see § 5.2.1) and perform the
corrections if necessary.
3. Connect the transducer current clamps on Phase L1, L2, L3 and Neutral N cables as
shown in Fig. 255 respecting the clamp’s arrow direction indicating the current standard
sequence from generator to load. On Real Time Values’ section screens always
verify the positive value of Active Power and the power factor relative to each
load which should be normally inductive before starting a recording. Reverse the
clamp by 180 degrees on cables in case of negative readings.
4. Supply the electrical installation under test in case it was temporarily put out of service
for meter connection. The values of parameters are shown by meter at display in Real
Time Values’ section (see § 5.2).
5. Press SAVE key if a instantaneous sample of display values (Instant) should be saved
(see § 5.7). Use HOLD function to stop the values at display if necessary.
6. Check all settings before start a recording (see § 5.4). Press GO/STOP key to enable
and disable a recording on meter (see § 5.6).