Satec expertmeter EM720 Operation Manual page 69

Chapter 5 Configuring the EM720
Display Label
Nom. Voltage
CT Primary
CT4 Primary
Nom. Freq.
P.Dmd.Period
Num. Periods
Dmd.Sync.Src
Volt.Dmd.Per.
Amp.Dmd.Per.
Hrm.Dmd.Per.
Max.Dmd.Load
I4 M.Dmd.Load
Wiring Mode
EM720 Power Quality and Revenue Meter
Parameter
PT Secondary (L-L)
Voltage
1
CT Primary Current
I4 CT Primary
Current
Nominal Frequency
Power block demand
period
Number of Blocks in
Sliding Demand
Power Demand Sync
Source
Volt Demand Period
Ampere Demand
Period
THD Demand Period
I Max. Load Current
I4 Max. Load Current 0 – 20,000 A
1
The maximum value for the product of the CT primary current
and PT ratio is 57,500,000. If the product is greater, power
readings are zeroed.
Available wiring modes are listed in the following table.
3OP2 3-wire Open Delta using 2 CTs (2 element)
4LN3 4-wire Wye using 3 PTs (3 element), line-to-neutral voltage readings
3DIR2 3-wire Direct Connection using 2 CTs (2 element)
4LL3 4-wire Wye using 3 PTs (3 element), line-to-line voltage readings
3OP3 3-wire Open Delta using 3 CTs (2½ element)
3LN3 4-wire Wye using 2 PTs (2½ element), line-to-neutral voltage readings
3LL3 4-wire Wye using 2 PTs (2½ element), line-to-line voltage readings
NOTE
In 4LN3 and 3LN3 wiring modes, the voltage readings for volt
demands represent line-to-neutral voltages; otherwise, they
will be line-to-line voltages. The voltage waveforms and
harmonics in 4LN3 and 3LN3 wiring modes represent line-to-
neutral voltages; otherwise, they will be line-to-line voltages.
Options Default
50-480 V 400 V
1-20,000 A 5 A
1-20,000 A 5 A
50, 60 Hz 50 Hz
Demand Setup
1, 2, 3, 5, 10, 15 min
15, 20, 30, 60
min
1-15 1
Meter clock, Meter
clock
DI1-DI8
0-9000 sec 900 sec
0-9000 sec 900 sec
0-9000 sec 900 sec
TDD Setup
0 – 20,000 A 0
0 = CT primary
0
0 = CT primary
Description
General Meter Setup
Description
The nominal secondary line-to-
line voltage. Used as a
reference voltage for the
EN50160 evaluation.
The primary rating of the phase
current transformer
The primary rating of the I4
current transformer
The nominal line frequency
The length of the demand
period for power demand
calculations.
The number of blocks to be
averaged for sliding window
demands
The source input for
synchronization of the demand
intervals. If a digital input is
specified as the source, a pulse
front denotes the start of the
demand interval
The length of the demand
period for volt demand
calculations
The length of the demand
period for ampere demand
calculations
The length of the demand
period for THD demand
calculations
The maximum demand load
current for phase current inputs
The maximum demand load
current for I4 current input
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