HT Italia SOLAR300, Руководство пользователя

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SOLAR300 - SOLAR300N
EN - 132
7.13. USING OF METER IN A 3 WIRE 3POY (USA SYSTEM)
CAUTION
The maximum voltage among D1, D2, A1, A2 and A3 inputs is 1000V / CAT
IV 600V to ground. Do not measure voltages exceeding the limits prescribed
by this manual. Should you exceed the voltage limits you could damage the
instrument and/or its components or endanger your safety.
Fig. 172: Meter connection in a two phase 3-wire 3POY system
CAUTION
If possible, before connecting the meter to the electrical equipment under
test turn the power supply off.
1. Check and modify the basic settings of meter if necessary (see § 5.3.1). Set
3P OY
system option.
2. Connect voltage test leads on Phases L1, L2, N and PE cables considering the colours as
shown in Fig. 172
3. Connect the transducer current clamps on Phase L1, L2, N cables as shown in Fig. 172
respecting the clamp’s arrow direction indicating the current standard sequence from
generator to load.
On Real Time Values’ section screens (selecting a 3 wire system
preliminarily) always verify the positive value of Active Power and the power factor
relative to 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 § 5.2.4.1).
5. Press SAVE key if a instantaneous sample of display values (Instant) should be saved
(see § 5.7). Use HOLD function to stopping 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)