MI 2883 Energy Master
Recording Practice and Instrument Connection
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Step 1: Instrument setup
On site measurements can be very stressful, and therefore it is good practice to prepare
measurement equipment in an office. Preparation of Energy Master include following
steps:
Visually check instrument and accessories.
Warning:
Don’t use
visually damaged equipment!
Always use batteries that are in good condition and fully charge them before you
leave an office.
Note:
In problematic PQ environment where dips and interrupts frequently occurs
instrument power supply fully depends on batteries! Keep your batteries in good
condition.
Download all previous records from instrument and clear the memory. (See
section 3.17 for instruction regarding memory clearing).
Set instrument time and date. (See section 3.20.1 for instruction regarding time
and date settings).
Step 2: Measurement setup
Measurement setup adjustment is
performed
on measured site, after we find out details
regarding nominal voltage, currents, type of wiring etc.
Step 2.1: Synchronization and wiring
Connect current clamps and voltage tips to the “Device under measurement”
(See section 4.2 for details).
Select proper type of connection i
n “Connection setup” menu (See section 3.19.1
for details).
Select synchronization channel. Synchronization to voltage is recommended,
unless measurement is performed on highly distorted loads, such as PWM
drives. In that case current synchronization can be more appropriate. (See
section 3.19.1 for details).
Select System frequency. System frequency is default mains system frequency.
Setting this parameter is recommended if to measure signalling or flickers.
Step 2.2: Nominal voltage and ratio
Select instrument nominal voltage according to the network nominal voltage.
Note:
For 4W and 1W measurement
all voltages are specified as phase-to-
neutral (L-N). For 3W and Open Delta measurements all voltages are specifies
as phase-to-phase (L-L).
Note:
Instrument assures proper measurement up to 150 % of chosen nominal
voltage.
In case of indirect voltage measurement, select appropriate
“Voltage ratio”
parameters, according to transducer ratio. (See section 3.19.1 and 4.2.2 for
details).
