GE Multilin
Sub Meters
26
Alternate quick way to enter in to SET is to press the TURBO key during the power ON, in
this method there is no need of entering the code.
2.2.2. Notes on the Energy Integrator
Your EPM 2000 meter is equipped with an Energy Integrator function which provides several
parameters for Energy Management: VAh, Wh,VARh, -VARh, RunHrs, On Hrs,
Interruptions (outages). A few of these need explanation:
Run Hrs
: Indicates the period the Load is On and has Run. This counter accumulates as
long as any one Amps phase has more than 11mA thru the meter terminal.
ON hrs
: The period for which the meter (supply) is On.
Interruptions
: Number of Supply Outages. Measured at the Auxiliary Supply of the
Meter. If the meter Aux Supply is from a UPS then the Number of interruption will be
zero (as long as the UPS stays ON), even if the Voltage Signals did die out from time to
time.
2.2.2.1.
Integrator Overflow
Your EPM 2000 meter contains a comprehensive “Integrator” to support Energy
Management. It accumulates several parameters over time, as explained above. All values are
Direct Reading and have a high resolution. This is necessary for accurate energy analysis over
short intervals of time. It also means that the readings max out and reset sooner or later as
given below. Since the Integrator contains counters for several parameters (VAh, Wh,VARh,
-VARh, RunHrs, On Hrs, Interruptions), they all reset together whenever any one of them
(usually VAh) overflows. This makes energy management calculations such as Average PF
very easy.
The maximum number that the Meter handles is 9,999 Giga for RMS and Energy values. This
means that the Energy readings of the meter will overflow between approximately 2 months
to 3 years depending upon the PT and CT ratios programmed. See Table 2.4 “Integrator
Overflow Period” below.
The Overflow Period below, depends on the Product of the PT Ratio and CT Ratio that
you’ve programmed for your application.
where, PT Ratio x CT Ratio =
sec
sec
A
A
x
V
V
pri
pri
Table 2-4 Integrator Overflow Period
PT Ratio x CT Ratio Max Reading
Overflow Period (Months)
Max
Min
1 to 1.999
9.999x10
6
3.85
1.92
2 to 10.999
9.999x10
7
19.29
3.51
11 to 100.999
9.999x10
8
35.07
3.82
101 to 1000.999
9.999x10
9
35.07
3.82
1001 to 10000.999
9.999x10
10
35.07
3.82
10001 to 100000.999
9.999x10
11
35.07
3.82
Greater than 100001
9.999x10
12
35.07
3.82
