Yokogawa PR300 Data sheet

<<Contents>> <<Index>>

General Specifications

Model PR300 Power and Energy Meter

GS 77C01E01-01E

■ Overview

This panel-mounted power and energy meter with a large, three-row LED display integrates all the measuring functions required for power management in locations such as factories and buildings into a single unit.

With the objective of working toward the preservation of the global environment by saving energy and performing equipment maintenance, the PR300 is designed to display and output the energy of various types of electrical equipment.

■ Features

• Saves on cost, wiring, and space

Integrates a wide selection of functions for measuring things like energy (active, regenerative, reactive, and apparent), power (active, regenerative, reactive, and apparent), voltage, current, frequency, and power factor into a single unit.

• Employs a large, three-row LED display

Capable of displaying three-phase current and voltage simultaneously, and the measurement items you assign.

• Analog output function

Equipped with a transducer function for power (active, regenerative, reactive, and apparent), voltage, current, frequency, and power factor (4 to 20 mA DC).

• Demand measurement

Measures the average power and current within a specified period. It also allows you to set up alarm points to output alarms.

• Equipped with a multitude of functions

Enables measurement of the maximum and minimum values of voltage and the maximum value of current, as well as, for example, the use of external digital input to measure energy at arbitrary times.

• Pulse output

Capable of outputting pulses proportional to energy (one measurement item from active, regenerative, reactive, and apparent energy).

• Converts the phase and wire system of an AC power system and an input voltage circuit to a universal format

The PR300 can handle from the single-phase two-wire system and single-phase three-wire system to the threephase three-wire system and three-phase four-wire system, and also universally cope with input voltage circuits up to 600 V AC.

• Compatible with ANSI 4-inch round form size and DIN 96-square instrument size

The ability to attach and detach JIS/ANSI-mounting kit makes the PR300 compatible with panel cutouts of ANSI 4inch round form, JIS 110-square instrument size, and DIN 96-square instrument size.

•Standard equipped with an RS-485 communication function and capable of Ethernet communication

• Compatible with overseas requirements

Power line indications A, B, and C provided for overseas use, in addition to R, S, and T

ANSI 4-inch round form size

DIN 96-square instrument size

The ability to attach and detach JIS/ANSI-mounting kit ensures compatibility with two sizes.

■ Model and Suffix Codes

PR300

Model Phase and wire system

Universal three-phase three-wire system

(single-phase two-wire, single-phase three-wire, and three-phase three-wire systems) 4:

Universal three-phase four-wire system

(single-phase two-wire, single-phase three-wire, three-phase three-wire, and three-phase four-wire systems) 5: Three-phase four-wire system (2.5 element)*

Input voltage/input current 1: Universal voltage input*2 (150 V, 300V, 600 V) / 1 A AC 2: Universal voltage input*2 (150 V, 300 V, 600 V) / 5 A AC

Additional input and output function 0: 1 digital input 1: 1 digital input, 1 analog output 2: 1 digital input, 1 pulse output 3:

1 digital input, 1 analog output, 1 pulse output Communication function

0: RS-485 communication 3:

RS-485 communication, Ethernet communication Optional measuring function

0: None 3: Demand measurement (1 demand alarm output)

Power supply 6:

100-240 V AC 10% (50/60 Hz) or 130-300 V DC 15% Phase indication format

A: A, B, and C indications R: R, S, and T indications

1 In cases where

specified, the input current specification of 1 A AC is not applicable. (PR300-51xxx-xx-0 cannot be ordered.) Can be used only when the voltage is in a state of equilibrium. The phase and wire system cannot be changed.

2 Set the voltage range (150 V, 300 V, or 600 V) according to the

rated input voltage to be measured. Voltage” of the Input Specifications on page 6.)

3 For Ethernet communication, the RS-485 communication interface

is exclusively for the Ethernet-serial gateway function.

“Three-phase four-wire system (2.5 element)” is

(Refer to “Rated Input

■Ordering Information

Specify the model and suffix codes.

Example: PR300-31000-6A-0

-0

GS 77C01E01-01E

©Copyright Apr. 2006 (KP)

5th Edition Dec. 10, 2008 (KP)

<<Contents>> <<Index>>

■Measuring Functions

Measurement item

Active energy () *1 ✔ ✔ ✔ ✔ ✔ kWh, MWh Active energy () * Reactive energy () * Reactive energy () * Apparent energy * Optional active energy *

Instantaneous

Single-phase

two-wire

system

✔ ✔ ✔ ✔ ✔ kWh, MWh Regenerative energy

✔ ✔ ✔ ✔

✔ ✔ ✔ ✔ ✔ Wh

Single-phase

three-wire

system

Three-phase

three-wire

system

Three-phase

four-wire

system

Active power Maximum ✔ ✔ ✔ ✔ ✔ W, kW, MW Minimum

Instantaneous Reactive power Maximum ✔ ✔ ✔ ✔ Minimum

Apparent power

Instantaneous

Maximum ✔ ✔ ✔ ✔

Minimum

Instantaneous Voltage-1 Maximum ✔ ✔ ✔ ✔ ✔ V, kV Minimum

Instantaneous Voltage-2 Maximum  ✔  ✔  V, kV Minimum

Instantaneous Voltage-3 Maximum   ✔ ✔ ✔ V, kV Minimum

Instantaneous

✔ ✔ ✔ ✔

 ✔  ✔  A, kA

  ✔ ✔

Current-1 Maximum

Current-2 Maximum

Current-3 Maximum

Frequency Maximum ✔ ✔ ✔ ✔ ✔ Hz Minimum

Instantaneous Power factor Maximum ✔ ✔ ✔ ✔ Minimum

Demand current-1 Maximum ✔ ✔ ✔ ✔

Demand current-2 Maximum  ✔  ✔  A, kA

Demand current-3 Maximum   ✔ ✔

Demand current

Demand power

*1 Integrated low-cut power can be set for each energy. Integrated low-cut power: This is a function for not integrating power less than a set value as energy. The setting range of integrated low-cut power is 0.05 to 20.00% of the rated power (initial value: 0.05%). *2 Either demand power or demand current can be set as a measurement item. *3 Can be used only when the voltage is in a state of equilibrium. *4 Can be measured only when the current is in a state of equilibrium.

Demand

✔ ✔ ✔ ✔

Demand

 ✔  ✔  A, kA

Demand

  ✔ ✔

Demand

Maximum ✔ ✔ ✔ ✔ ✔ W, kW, MW

✔ ✔ ✔ ✔ ✔ W, kW, MW

Three-phase

four-wire system (2.5 element)

Unit and

symbol

kvarh, Mvarh LAG:  kvarh, Mvarh LEAD:  kVAh, MVAh

var, kvar, Mvar

VA, kVA, MVA

A, kA

COS

A, kA A, kA

Remarks

Calculated from the voltage-1

LAG:  LEAD: 

✔: Effective : Ineffective

GS 77C01E01-01E 5th Edition Dec. 10, 2008-00

<<Contents>> <<Index>>

● Optional integrating function

Power is integrated while a control signal for optional integration is on. When the control signal is switched from off to on, the optional integrated value indication is reset and integration starts. (The integrated value prior to the reset is held in a register.) The integrated value cannot be guaranteed in the event of a power failure occurring during integration.

● Demand measurement (when demand measurement is specified)

The PR300 measures average power or average current within a set demand period. The maximum demand value for the demand measuring time is held until the power is turned off, remote reset is executed, or the next demand measurement is started.

Item Setting Range

Demand power/current Demand period

Demand alarm mask time* 1 minute to length of demand period 1 minute 1 minute Demand power alarm point Demand current alarm point

Alarm release function Data update interval

* This is the time from the start of the demand period to the set time in which no judgment is made for the alarm (alarm masked). During the

alarm mask time, no maximum demand value is updated and no alarm is output.

Active power, current  Active power

10 seconds  

1 to 60 minutes

(Demand

1 to 1000 kW 1 kW 100 kW When demand power is selected

1 to 1000 A 1 A 100 A When demand current is selected

Automatic release and manual release

alarm mask time to 60 minutes)

Resolution

1 minute 30 minutes

Automatic



Initial Value Remarks

Demand alarm mask time ⬉ Demand period

release

Start demand measurement

Average power

(current) update

Demand period (1 period)

Average power

(current) update

Demand measuring time

The maximum demand value for this time is held.

Stop demand measurement

<<Contents>> <<Index>>

■ Display and Operation Specifications

(7)(6) (8) (9) (10)

(5)

Measured

(1)

Value Display

(4)

(1)

Upper display

(2)

(3)

Middle display

(11)

Lower display

(12)

5-digit, 3-row, 7-segment LED display Display color: red

Measured Value display:

Measurement Item Display Active energy [kWh, MWh] *1 Reactive energy [kvarh, Mvarh] *2 Apparent energy [kVAh, MVAh] *1 Regenerative energy [kWh, MWh] *2 Optional active energy [Wh] Active/regenerative power (instantaneous, maximum, and minimum values) Reactive power (instantaneous, maximum, and minimum values) Apparent power (instantaneous, maximum, and minimum values) Voltage (instantaneous, maximum, and minimum values) Current (instantaneous and maximum values) [A, kA] *2, *4

Power factor (instantaneous, maximum, and minimum values)

Frequency (instantaneous, maximum, and minimum values) Demand power Maximum demand power Demand current Maximum demand current

*1: Without sign, but with a decimal point *2:

With a sign and a decimal point ("+" is not indicated). Regenerative power (energy) always shows "−" negative

indication. *3: "MAX" lights up for the maximum value and "MIN" lights up for the minimum value. *4: "MAX" lights up for the maximum value.

Measured Value screen:

Display pattern: The measurement items you want to display are assigned to each of the upper, middle, and lower displays

Number of display patterns: Can be set in the range of 1 to 8. Pressing the SET/ENT key switches the display from

Display Pattern-1 Display Pattern-2 Display Pattern-3 Display Pattern-4 Display Pattern-5 Display Pattern-6 Display Pattern-7 Display Pattern-

Upper

display

Middle display

Lower

display

* The display of current (phase switch indication) is switched between current-1, current-2, and current-3 each time the SEL key is

Current

(Phase switch

indication)*

Voltage

(Phase switch

indication)*

Active power

pressed. The display of voltage (phase switch indication) is switched between voltage-1, voltage-2, and voltage-3 each time the SEL key is pressed.

LAG: G [COS␾]

The position of a decimal point differs depending on the primary rated power, VT ratio, and CT ratio.

to provide indications using three display rows as one pattern. Up to eight display patterns can be set. The initial values are as shown in the following table. (Combinations other than those shown in the following table are also available if the parameters are set.)

"display pattern-1," "display pattern-2," and so on in order according to the number of patterns set. The initial value is "1" and only display pattern-1 is displayed when this value is set.

Active power

Reactive

power

Power factor

LEAD: d [COS␾]

Active energy

LEAD reactive

energy

Apparent

energy





[W, kW, MW] *2, *3

[var, kvar, Mvar] *2, *3

[VA, kVA, MVA] *1, *3

[V, kV] *1, *3

[Hz] *3

[W, kW, MW] [DEMAND] *4

[A, kA] [DEMAND] *4

Current-1

Current-2

Current-3

Voltage-1

Voltage-2

Voltage-3

Current

(Phase switch

indication)*

Voltage

(Phase switch

indication)*

Frequency

Current

(Phase switch

indication)*

Active power

Power factor

Active power

Maximum

demand value

Demand

value

GS 77C01E01-01E 5th Edition Dec. 10, 2008-00

<<Contents>> <<Index>>

VT ratio/CT ratio:

If the VT ratio and CT ratio are set, input to the PR300 is displayed after converting it to the primary input value before VT or CT. The VT and CT ratios can be set via communication or using the operation keys. VT ratio setting range: 1 to 6000* CT ratio setting range: 0.05 to 32000*

* Set the VT ratio and CT ratio so that [secondary rated power]  [VT ratio]  [CT ratio] is smaller than 10 GW. (2) Unit Lamps The relevant unit lamp lights up according to a measurement item and measured value. Display color: red

(3)

MAX and MIN Lamps

(4)

Phase Indication Lamps

should be specified in accordance with the suffix code.)

Display color: red

* Can be measured only when the current is in a state of equilibrium.

(5) Power Lamp Lights up when power is supplied.

Blinks (4 times/sec) until it returns to normal when the communication error occurs.

(6)

Communication Lamp

Display color: green (7) Pulse Output Lamp Display color: green (8)

Demand Alarm Lamp

lights up to indicate the occurrence of an alarm.

Display color: red (9) Phase and Wire The lamps of the phase and wire system that have been set light up. System Lamps Display color: green (10) Input Range Lamps The input voltage range (150 V, 300 V, or 600 V) and input current range (1 A or 5 A) that have been set light up. Display color: green (11) DEMAND Lamp Lights up when a demand value is displayed. Display color: red (12) Operation Keys

Indicator-out Mode Setting The ON/OFF setting of the indicator-out mode function and the wait time before entering the indicator-out mode can be set using the operation keys. (Cannot be set via communication.) Indicator-out mode: ON/OFF ( Indicator-out mode wait time: 1 to 60 minutes (resolution: 1 minute) ( A/D Sampling Rate,

A/D sampling rate: 4.8 kHz Data Update Interval

Internal measurement data: display/communication data is updated at an interval of 1 second or less

Either the MAX or MIN lamp lights up when a maximum or minimum measured value is displayed.

Display color: red

Indicate the phase to which the measured value corresponds. (The A, B, and C indications or R, S, and T indications

Phase and Wire System Voltage-1 Voltage-2 Voltage-3 Current-1 Current-2 Current-3 Single-phase two-wire system A (R) − − A (R) − − Single-phase three-wire system Three-phase three-wire system Three-phase four-wire system A (R) B (S) C (T) A (R) B (S) C (T) Three-phase four-wire system

(2.5 element)

Display color: green

Blinks during communication (RS-485 or Ethernet).

Lights up when output is produced during pulse output, and goes out when no output is produced.

If a demand value exceeds the demand alarm point at a time other than during the alarm mask time, the OVER lamp

Used to switch measured value display patterns. This key is also used for setting parameters. Used to move the display digit during energy indication. This key is also used for setting parameters.

Used to display the maximum or minimum measured value. These keys are also used for setting parameters.

Used to switch phase indications when the PR300 displays a voltage or current for which phase indication can be changed. (Phase switch indication is not available for single-phase two-wire system.) This key is also used for setting parameters.

Used to start/stop demand measurement. The lamp in the key lights up during demand measurement. Display color: green

This function turns off LEDs after a certain time elapses, with the exception of the power lamp (LED).

A, B (R, S) B, C (S, T) − A (R) C (T) −

A, B (R, S) − B, C (S, T) A (R) − C (T)

A (R) − C (T) A (R)* − C (T)*

initial value: OFF)

initial value: 10 minutes)

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