YOKOGAWA AR-PH User manual

User’s
Manual
1
2-9-32, Naka-cho Musashino-shi, Tokyo 180-8750 Japan
https://www.yokogawa.com/ns/ar/
You can download the latest manuals from the following website:
Thank you for purchasing the arresters.
Please read through this manual before use for correct handling.
IM 77M02G02-01EN
3rd Edition: Apr. 01, 2022(YK)
CAUTIONARY NOTES FOR SAFE USE OF
THE PRODUCT
This User’s Manual should be carefully read before installing
and operating the product. The following symbol is used on the
product and in this manual to ensure safe usage.
This symbol is displayed on the product when it is
necessary to refer to the User's Manual for information
on personal and instrument safety. This symbol is
displayed in the User's Manual to indicate precautions
to avoid danger to the operator, such as an electric
shock.
The following symbols are used only in this manual.
Draws attention to essential information for
understanding the operations and/or functions of the
product.
CAUTION
The arrester may deteriorate or break if it receives
surges. Arresters that have deteriorated below a
specific level or are broken, may fail to meet their
protection performance level and must therefore be
replaced. When replacing such arresters, replace both
the main unit and the terminal block. It should be noted
that the arrester may fail to safeguard the equipment
under protection if it receives any surges exceeding its
tolerance limit, such as direct lightning strokes.
QR Code
The product has a QR Code pasted for efficient plant
maintenance work and asset information management.
It enables confirming the specifications of purchased products
and user’s manuals.
For more details, please refer to the following URL.
https://www.yokogawa.com/qr-code
* QR Code is a registered trademark of DENSO WAVE
INCORPORATED.
CHECKING PRODUCT SPECIFICATIONS
AND PACKAGE
Check that the package contains the following items:
• AR-PH: 1
• Tag number label: 1
• Terminal cover: 2
• User's Manual (this manual)
1. MOUNTING AND WIRING
WARNING
Wiring should be done after ensuring the break of each
cable.
1.1 Mounting
Mount the arrester referring the figure below.
Unit: mm
24
90
M4 screw
Panel
19
24.5
465
36-M4
Oval hole
8-ø5.5×10
483
441.6
73
89
99
50
76.2
24.7
16.5
Ɣ)5.3DQHO
1.2 External Dimensions
Unit: mm
23.5
63.5
55
8.5 (3.8)
When the latch is lowered.
26.528.5
90 53
100
DIN rail
AR8-01
(DIN rail adapter)
Main unit-fixing
screw
100
104
106
Model AR-PH
Arrester for Power Supply
(200 V AC/2 A)

2IM 77M02G02-01EN 3rd Edition Apr. 01, 2022-00
1.3 Terminal Arrangement
Protect-side
terminal
Surge-side
terminal
A
B
C
1
2
3
L1
L2
Not Connected
L1
L2
Not Connected
Grounding
terminal
A
C
B
12
3
1.4 Wiring
A
C
B
12
3
CAUTION
FOR HIGH
VOLTAGE
NOTE
Use of arresters ignoring the
specifications may cause electric
shock, overheating or damage.
1. Input signal value applied to
the arrester should meet the
required specifications.
2. The external wiring to the
terminals and wiring to ground
are as specifications.
Flexible twisted wire and durable round crimp-on terminal (JIS C
2805) are recommended to use.
Power supply and grounding cables
Nominal cross-sectional area of conductor: 2.0 mm2or more.
Example of suitable cable: 600V vinyl insulated cable (IV)
(JIS C 3307), Vinyl insulated cable
(KIV) (JIS C 3316) for electronic
instrument
1.5 Grounding
NOTE
Wire tightening torque for arrester should not be 1.2
N•m or more.
(1) Interconnect Grounding (2) Interconnect Grounding
(when using shield line)
Arrester Instrument Arrester Instrument
Apply the grounding system which is
defined by the rules and standards
of the country or the region.
Short bar
(for grounding terminal connection)
Grounding for serial installation of
arresters is to connect grounding
terminals of neighboring arresters to
each other and touch ground at one
point from last arrester according.
Make sure to earth ground the ground terminal through minimum resistance.
CONNECTION OF ARRESTERS WITH
INSTRUMENTS TO BE PROTECTED
Receiver
Transmitter AR-SA AR-SA
A
+
íB
1
2
1
2
A
B
A
B
1
2
1
2
A
B
GND
4-20 mA
GND
AR-PH AR-PH
200 V AC
Lightning
Surge
Lightning
Surge
Ground TerminalGround Terminal
Ground Terminal
Protect side Protect sideSurge side
2. ENVIRONMENTAL CONDITIONS
Ambient temperature: −10 to +60°C
Relative humidity: 5 to 90% RH (No condensation)
Altitude at installation site: Max. 2000 m above sea level
3. MANTENABCE
3.1 Arrester Checking
The arrester main body and terminal base are connected by plug-
in. Circuit between surge side and protect side would not be open
even if the main body is removed from the socket on terminal
base by loosing main unit-fixing screw. To check the arrester
performance, remove the main body from the socket and check
it by using the AR2-CK (arrester checker: option). If the arrester
cannot be used because the main body is deteriorated or broken,
be sure to replace both the main body and the terminal block.
The terminal block may be damaged by receiving surges. The
replacement of only the main body may fail to meet its protection
performance level.
3.2 Arrester check period
To protect the instrument from damage by induced lightning, the
arrester should be checked periodically at least once a year. In
areas where lightning occurs frequently, check should be done
more often particularly after thunderstorms.
4. HARDWARE SPECIFICATION
Use Power Supply (200 V AC)
* Maximum continuous operating voltage (Uc) 280 V AC
Permissible current
leakage
Between lines 1 mA or less (at 420 V DC)
Between ground 1 mA or less (at 420 V DC)
Instrument side voltage
limit (10 kV, 1.2/50 μA)
Between lines 1000 V or less
Between ground 1000 V or less
*Voltage protection level (Up) 1500 V or less
*Nominal discharge current (In)(8/20 μA) 2500 A
*Maximum discharge current (Imax)
(8/20 μA) 5000 A
Discharge starting
voltage
Between lines 420 V DC or more
Between ground 420 V DC or more
*Rated load current 2 A AC
JIS compliant JIS C 5381-1 (Class II)
*: Description compliant with JIS C 5381-1.