Energy Meter Manual
Table Of Contents
- Introduction
- Notices
- Checking the Package
- Checking the Model and Suffix Codes
- Contents
- Chapter 1 Installation and Wiring
- 1.1 Installation with the ANSI 4-inch Round Form or JIS 110-square Instrument Size
- 1.2 Installation with the DIN 96-square Instrument Size
- 1.3 Wiring
- Crimping Terminal Recommendations
- Single-phase two-wire system (voltage input, current input, power supply)
- Single-phase three-wire system (voltage input, current input, power supply)
- Three-phase three-wire system (voltage input, current input, power supply)
- Three-phase four-wire system (voltage input, current input, power supply)
- Three-phase four-wire system (2.5 element) (voltage input, current input, power supply)
- Other Wiring
- 1.4 Attaching the Dust Cover and Terminal Cover
- Chapter 2 Preparations before Starting Measurement (Set up the PR300 First)
- Chapter 3 Parameter Setting Operations
- 3.1 Basic Parameter Setting Operations
- 3.2 Setting the VT and CT Ratios
- 3.3 Setting the Integrated Low-cut Power
- 3.4 Setting RS-485 Communication Conditions
- 3.5 Setting Ethernet Communication Conditions
- 3.6 Setting Pulse Output Conditions
- 3.7 Setting Analog Output Conditions
- 3.8 Setting Demand Measurement Conditions
- 3.9 Setting the Measured Value Display Pattern
- 3.10 Setting the “Indicator-out” Mode and Locking Parameters
- Chapter 4 Operation for Display of Measurement Items and Measurement Method
- 4.1 Measurement Items
- 4.2 Switching Display Pattern
- 4.3 Displaying Measured, Instantaneous, and Maximum/Minimum Values
- Example Display and Measuring Ranges of Active Power (Regenerative Power)
- Example Display and Measuring Ranges of Reactive Power
- Example Display and Measuring Ranges of Apparent Power
- Example Display and Measuring Ranges of Voltage
- Example Display and Measuring Ranges of Current
- Example Display and Measuring Ranges of Power Factor
- Example Display and Measuring Ranges of Frequency
- How to Switch between Instantaneous Value, Maximum Value, and Minimum Value
- 4.4 Phase Switching for Voltage and Current
- 4.5 Displaying Energy Values
- 4.6 Resetting Measured Values
- 4.7 Demand Measurement (Optional Measuring Function)
- Chapter 5 Troubleshooting
- Appendix
- Appendix 1 Specifications of PR300
- Measuring Function
- Power Items and Equations
- Input Specifications
- Digital Input Specifications
- Analog Output Specifications (additional output function)
- Pulse Output Specifications (additional output function)
- Demand Alarm Output Specifications (optional measuring function)
- Communication Specifications
- Standard Performance
- Safety and EMC Standards
- Environmental Conditions
- Mounting and Shape
- Appendix 2 System Reset
- Appendix 3 Parameter Map
- Appendix 4 Parameter List
- Appendix 5 Alphanumeric Characters Table for 7-segment LED
- Appendix 1 Specifications of PR300
- Index
- A
- C
- D
- E
- H
- I
- M
- O
- P
- R
- S
- T
- V
- W
- Wiring diagram
- Single-phase two-wire system
- Single-phase three-wire system
- Three-phase three-wire system
- Three-phase four-wire system
- Three-phase four-wire system (2.5 element)
- Analog output
- Demand alarm output
- Demand alarm release
- Ethernet communication
- Integration control signal
- Palse output
- RS-485 communication
- Wiring diagram
4-4
IM 77C01E01-01E
4.3 Displaying Measured, Instantaneous, and Maximum/Minimum Values
Example Display and Measuring Ranges of Voltage
Voltage-2
Voltage-1
Voltage-3
Voltage range 1.2 VT ratio
100 V to less than 1 kV
1 kV to less than 10 kV
10 kV to less than 100 kV
100 kV to less than 1 MV
1 MV to less than 10 MV
Measuring range
0.0 to 999.9 V
0 to 9999 V
0.00 to 99.99 kV
0.0 to 999.9 kV
0 to 9999 kV
Supplementary
unit
(refer to the
table on the right)
: Turns on while the maximum value is displayed.
: Turns on while the minimum value is displayed.
The following will appear when the input value is
less than [voltage range 0.1 VT ratio] or
[voltage range 1.2 VT ratio] or more.
and the measured value blink alternately.
Example Display and Measuring Ranges of Current
Current range 1.2 CT ratio
0.06 A to less than 10 A
10 A to less than 100 A
100 A to less than 1 kA
1 kA to less than 10 kA
10 kA to less than 100 kA
100 kA to less than 1 MA
Measuring range
0.000 to 9.999 A
0.00 to 99.99 A
0.0 to 999.9 A
0 to 9999 A
0.00 to 99.99 kA
0.0 to 999.9 kA
Current-2
Current-1
Current-3
Supplementary
unit
(refer to the
table on the right)
: Turns on while the maximum value is displayed.
The following will appear when the input value is
[current range 1.2 CT ratio] or more.
and the measured value blink alternately.
Example Display and Measuring Ranges of Power Factor
Power factor
Symbol indicated when the value
is LAG power factor.
Symbol indicated when the value
is LEAD power factor.
The following will appear when the measurement is out of range:
: Turns on while the maximum value is displayed.
: Turns on while the minimum value is displayed.
and the measured value blink alternately.
Measuring range: (LEAD) 0.500 to 1 to 0.500 (LAG)
* When the power factor is 1, the symbols indicating LEAD and LAG power factors are not displayed.