CHAPTER 5: OVERVIEW

ACCESSING MAX/MIN VALUES

5.5Accessing 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.

MAX

 

 

AC VOLTS

 

 

A B C A B C

MIN

 

 

N N N B C A

LM1

 

 

 

 

 

 

LM2

 

 

AC AMPS

 

 

 

 

 

 

 

A B C N

 

 

 

 

POWER

 

 

 

 

PF

 

 

 

 

KW

 

 

 

 

KVA

KVAH

KWH

 

FREQ

KVAR

MAX/MIN

VOLTS

AMPS

POWER

PHASE

LIMITS

 

NEXT

MAX

 

 

AC VOLTS

 

 

A B C A B C

MIN

 

 

N N N B C A

LM1

 

 

 

 

 

LM2

 

 

AC AMPS

 

 

 

 

 

 

A B C N

 

 

 

POWER

 

 

 

PF

 

 

 

KW

 

 

 

KVA

KVAH

KWH

FREQ

KVAR

MAX/MIN

VOLTS

AMPS

POWER

PHASE

LIMITS

 

NEXT

MAX

AC VOLTS

A B C A B C

MIN

N N N B C A

LM1

 

LM2

AC AMPS

 

 

A B C N

 

POWER

 

 

 

PF

 

 

 

KW

 

 

 

KVA

KVAH

KWH

FREQ

KVAR

MAX/MIN

VOLTS AMPS

POWER

PHASE

LIMITS

 

NEXT

Step 1:

Step 2:

Step 3:

a. To select the Volts category, press

a. Press PHASE/NEXT for the desired

a. Press MAX/MIN/LIMITS once to

VOLTS.

phase.

view the maximum reading for Volts

The display blanks and all

 

C-N.

 

 

annunciators glow, confirming

 

The display blanks and

selection.

 

momentarily indicates the max value.

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.

EPM 5300 SERIES ADVANCED POWER METERS – INSTRUCTION MANUAL

5–35

Page 47
Image 47
GE EPM 5350, EPM 5200, EPM 5300 instruction manual Accessing Max/Min Values, Phase