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CHAPTER 5: OVERVIEW ACCESSING MAX/MIN VALUES
EPM 5300 SERIES ADVANCED POWER METERS – INSTRUCTION MANUAL 5–35
5.5 Accessing Max/Min Values
Max/min values represent the highest and lowest average demand over a user
programmable time period known as the Integration Interval. The readings are
calculated using a rolling average technique. Each second, a new reading is used to
calculate the max/min; the last reading of the interval is dropped off. The highest max
during an averaging period is stored until the user resets the max/min. This is similar to
amp demand meters. It is commonly referred to as Thermal Demand.
To access a max/min value while displaying a desired measurement, press MAX/MIN/
LIMITS—once for the max value; twice for the min. Examples given below are for voltage
and current phases. Use the same procedure for all other parameters.
To access KW, KVAR and PF negative measurements indicating leading current, press
MAX/MIN/LIMITS five times for negative max and six times for negative min.
Step 1:
a. To select the Volts category, press
VOLTS.
The display blanks and all
annunciators glow, confirming
selection.
Step 2:
a. Press PHASE/NEXT for the desired
phase.
Step 3:
a. Press MAX/MIN/LIMITS once to
view the maximum reading for Volts
C-N.
The display blanks and
momentarily indicates the max value.
MAX/MIN
LIMITS
KVAR
PF
KW
KVA
FREQ
KWH
KVAH
AC VOLTS
AC AMPS
POWER
NC
B
A
MAX
MIN
A
N
B
N
C
N
A
B
B
C
C
A
LM2
LM1
NEXT
PHASE
VOLTS
AMPS
POWER
MAX/MIN
LIMITS
KVAR
PF
KW
KVA
FREQ
KWHKVAH
AC VOLTS
AC AMPS
POWER
NC
B
A
MAX
MIN
A
N
B
N
C
N
A
B
B
C
C
A
LM2
LM1
NEXT
PHASE
VOLTS
AMPS
POWER
MAX/MIN
LIMITS
KVAR
PF
KW
KVA
FREQ
KWHKVAH
AC VOLTS
AC AMPS
POWER
NC
B
A
MAX
MIN
A
N
B
N
C
N
A
B
B
C
C
A
LM2
LM1
NEXT
PHASE
VOLTS
AMPS
POWER