Energy Meter Instruction Manual
Startup
Manual
1
Network Solutions Business Division
2-9-32, Naka-cho Musashino-shi, Tokyo 180-8750 Japan
Phone: +81-422-52-7179 Facsimile: +81-422-52-6619
Checking the Package
Verify the package as explained below before starting to use the product.
Should the delivered product be wrong or the package be missing any
item, contact the vendor from which you purchased the product.
Checking the Model and Suffix Codes
The PR300 bears a nameplate. Confirm that “MODEL” and “SUFFIX”
(suffix codes) shown on the nameplate agree with those of the product or-
dered.
Model
PR300
Phase and
wire system
Input voltage/
input current
Additional input
and output function
Communication
function
Optional measuring
function
Power supply
Phase indication format
Suffix Codes
- -6 -0
-3
-4
-5
1
2
0
1
2
3
0
3
0
3
-6
A
R
-0
Description
Power and Energy Meter
Universal three-phase three-wire system
(single-phase two-wire, single-phase three-wire, and three-
phase three-wire systems)
Universal three-phase four-wire system
(single-phase two-wire, single-phase three-wire, three-phase
three-wire, and three-phase four-wire systems)
Three-phase four-wire system (2.5 element)
*1
Universal voltage input
*2
(150 V, 300 V, 600 V) / 1 A
Universal voltage input
*2
(150 V, 300 V, 600 V) / 5 A
1 digital input
1 digital input, 1 analog output
1 digital input, 1 pulse output
1 digital input, 1 analog output, 1 pulse output
RS-485 communication
RS-485 communication, Ethernet communication
*3
None
Demand measurement (1 demand alarm output)
100-240 V AC ±10% (50/60 Hz) or 130-300 V DC ±15%
A, B, and C indications
R, S, and T indications
Always 0
*1 Can be used only when the voltage is in a state of equilibrium. In cases where “Three-phase four-wire system (2.5 element)” is
specified, the input current specification of 1 A AC is not applicable.
*2 Set the voltage range (150 V, 300 V, or 600 V) according to the rated input voltage to be measured.
*3 For Ethernet communication, the RS-485 communication interface is exclusively for the Ethernet-serial gateway function.
IM 77C01E01-02E
3rd Edition: June 2008 (YK)
Serial Number (NO.)
Also inform this number shown in “NO.” on the nameplate when con-
tacting the vendor from which you purchased the PR300.
Checking the Accessories
Model PR300
Pow
er and Ener
gy Meter
<Installation>
M
odel PR300
Pow
er and Energy Meter
<Initial S
etup
O
p
erations>
JIS/ANSI-mounting kit
DIN-mounting brackets
Shorting bar Tag number labels Startup manuals
Dust cover Terminal cover
Bezel (1)
Panel-mounting bolts (2)
Nuts (2)
Flat washers (2)
Spring washers (2)
Bracket-fixing screws (2)
Panel-mounting
bracket (1)
Manuals for the PR300
(with 3 fixing screws)
(for RS-485 communication
termination)
(Installation/Initial Setup Operations)
(for DIN 96-square instrument
panel mounting)
(with 1 fixing screw)
(This CD contains all manuals
related to the PR300.)
Model PR300
Power and Energy Meter
<Installation>
Safety Precautions
WARNING
●
Install the PR300 in the secondary side of the exsting breaker.
●
When installing the PR300, provide spacing of 50 mm or more
between each face of the PR300 body and the instrument next
to the PR300 or between each face and the wall surface.
NOTE
● Do not install the PR300 in the following types of environ-
ments, as they may cause the PR300 to malfunction or fail.
Avoid sites:
exposed to significant shock or vibration; where corrosive
gases are present; where large amounts of dust are present;
exposed to water; exposed to direct sunlight; outside; at
altitudes above 2000 m.
● The PR300 mounting position is for vertical panels only.
WARNING
● As there is a danger of electric shock, turn off the power sup-
ply and check that the cables to be connected are not con-
ducting electricity before carring out the wiring procedure.
● For safety, be sure to install a circuit breaker switch that con-
forms to IEC 60947 near the PR300 so as to be operated eas-
ily, and clearly indicate that the device is used to de-energize
the PR300.
● The wiring procedure for the PR300 should be carried out by
a qualified person (an electrician etc.) with knowledge of
electrical matters and who has actual experience.
● Install a current transformer (CT) inside a panel when using a
conduit for wiring.
● Use the UL Listed Panel only for the panel on which the
PR300 is installed.
● If the voltage is below 600 V AC, it is possible to connect the
PR300 directly without using a voltage transformer (VT) and
if the current is below 5 A AC, it is possible to do so without
using a current transformer (CT). However, in order to use
the PR300 safely, the use of VT and CT is recommended.
Use the UL-approved VT and CT for the PR300.
● Perform wiring for the voltage and current input in the same
circuit.
● Check the following before turning on the power. Using the
PR300 beyond the stated specifications may cause it to heat
up and burn out.
• Check that the power supply voltage, input voltage, and input
current values to be applied to the PR300 agree with its
specifications.
• Check that the external wiring is connected to the terminals in
accordance with the specifications.
● Do not touch the screws in locations (a) to (f) shown in the
wiring diagrams. They are an essential part of the structure
of the PR300. Loosening or tightening them may result in a
malfunction or failure of the PR300.
● Be sure to attach the terminal cover to prevent electric shock
(refer to Chapter 3, “Attaching the Dust Cover and Terminal
Cover”).
NOTE
When attaching the terminal cover
• Since the terminal cover of PR300 has the structure of
preventing electric shock, the terminal cover cannot be
attached after completing all wiring. Refer to Chapter 3,
“Attaching the Dust Cover and Terminal Cover” before wiring.
Carry out the wiring referring to the diagrams in Sections 2.1 to 2.6. The
wiring for voltage input, current input, and power supply is M4 screw termi-
nal connection. For other wiring it is M3 screw terminal connection. The
connector for connecting to the Ethernet is RJ45.
Use strand wires for the wiring. Wiring cables with a nominal cross-sec-
tional area of 1.25 mm
2
or thicker are recommended for voltage/current in-
put and power supply; cables with a nominal cross-sectional area of 0.5
mm
2
or thicker are recommended for other signals. Durable good-contact
ring tongue crimping terminals are recommended to use.
Thank you for purchasing the PR300.
This manual describes the installation and wiring procedures of the
PR300. The electronic manuals are also provided on the accompanying
CD in addition to this manual. Read them along with this manual. To en-
sure correct use, be sure to read the PR300 Power and Energy Meter
User’s Manual (IM 77C01E01-01E) thoroughly before beginning opera-
tion.
Printed manuals (Electronic manuals [PDF files] are also provided on the accompanying CD.)
Model PR300 Power and Energy Meter Startup Manual <Installation>
:
IM 77C01E01-02E (This manual)
Model PR300 Power and Energy Meter Startup Manual <Initial Setup Operations> :
IM 77C01E01-03E
Electronic manuals (PDF files)
Model PR300 Power and Energy Meter User’s Manual :
IM 77C01E01-01E
Model PR300 Power and Energy Meter Communication Interface User’s Manual :
IM 77C01E01-10E
A
F
FB
ød
Applicable
terminals
M4
M3
Applicable
terminals
M4
M3
ød
(mm)
4.4 max.
3.3 max.
A
(mm)
7.0 max.
5.8 max
F
(mm)
7.8 max.
6.7 max.
B
(mm)
4.7 max.
Recommended
tightening torque
1.2 N•m
0.6 N•m
Applicable wire size
1.04 to 2.63 mm
2
0.25 to 1.65 mm
2
Ring tongue terminal
Spade tongue terminal
A
ød
1. Installation
1.1 Installation with the ANSI 4-inch Round Form
The PR300 can be installed so that it handles ANSI 4-inch round form or
JIS 110-square instruments panel cutouts by attaching the “JIS/ANSI-
mounting kit” accessory.
1.1.1 External Dimensions
2-M5
Bezel
Terminal cover
Dust cover
23
22
2
1 to 10
(Acceptable panel thickness for mounting)
104.5 1.5
(126.5)
(109)
110
110
109
Unit: mm
1.1.2 Panel Cutout Dimensions
45±0.3 45±0.3
160 min.
160 min.
[6.299 min.]
ø101
ø6.5
ø7.9
[ø0.312]
45±0.3
42.9±0.4
[1.688±0.015]
[1.688±0.015]
[1.688±0.015]
42.9±0.4
42.9±0.4
Unit: mm
[approx. inch]
[1.688±0.015]
42.9±0.4
JIS
ANSI
160 min.
45±0.3
160 min.
[6.299 min.]
[ø4.000]
ø101.6
Normal Allowable Deviation=± (Value of JIS B 0401-1998 tolerance grade IT18) / 2
Please keep this manual for future reference.
Record the parameter settings of the PR300 on MEMO column in
Appendix 4, “Parameter List” of the user’s manual (IM 77C01E01-
01E) provided on the accompanying CD.
Note that in the case of a failure, the parameter settings set to the
failed product cannot be restored.