5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
EM-8155 Rev.2 P. 1 / 4
INSTRUCTION MANUAL
LIGHTNING SURGE PROTECTOR FOR
POWER SUPPLY USE (fast response: 3 nsec.)
MODEL
MMAJ
BEFORE USE ....
Thank you for choosing M-System. Before use, please check
contents of the package you received as outlined below.
If you have any problems or questions with the product,
please contact M-System’s Sales Office or representatives.
■
PACKAGE INCLUDES:
Lightning surge protector ...................................................(1)
■
MODEL NO.
Confirm Model No. marking on the product to be exactly
what you ordered.
■
INSTALLATION / INSTRUCTION MANUAL
This manual describes necessary points of caution when
you use this product, including installation, connection and
basic maintenance procedures.
LIMITATION APPLICABLE TO M-RESTER
The M-RESTER will protect electronics equipment from
damage caused by lightning by absorbing most of the
surge voltages.
However, M-RESTER may not be effective against cer-
tain extremely high voltages caused by a direct or almost
direct hit by lightning.
M-RESTER must be installed according to this installa-
tion / instruction manual.
POINTS OF CAUTION
■
ENVIRONMENT
• Indoor use. Install the surge protector on a place where
the monitor LED can be easily visible.
• It is possible to be hit by a certain strong lightning ex-
ceeding the capacity of this unit. The surge protector may
will be destroyed by such high lightning energy. Be sure
to install the surge protector inside a metal enclosure for
safety.
• Do not install the surge protector where it is subjected to
continuous vibration. Do not subject the unit to physical
impact.
• Environmental temperature must be within -5 to +55°C
(23 to 131°F) and with relative humidity within 30 to 90%
RH in order to ensure adequate life span and operation.
• Do not perform the installation, wiring or checking the
M-RESTER during thunder storms.
■
DIELECTRIC STRENGTH TEST
• Disconnect the earth conductor before conducting a di-
electric strength test. If the test is performed, connecting
to the earth, the surge protector will start discharging at
the described discharge voltage, resulting as insulation
failure. Be sure to connect the earth conductor after the
testing is complete.
■
RATED CURRENT
• Be sure that the rated current of protected device does
not exceed the maximum load current specification of the
M-RESTER.
• Be sure to install a breaker which matches the current
rating at the power source side of the M-RESTER.
■
AND....
• We recommend that you keep spare surge protectors so
that you can replace them when necessary.
• Lightning surge can enter not only through signal lines
but also through power supply lines. We recommend that
you also use the surge protectors for power line for suf-
ficient protection.
COMPONENT IDENTIFICATION
U
V
u
v
PE
Monitor
ALM
A2
A1
C
Surge
Side
Protect
Side
Body
Specifications
Monitor LED
Surge Side
Terminals
Earth Terminals
Protect Side
Terminals
Alarm Terminals
*
1. Only for “alarm output” option
*
1
■
FRONT VIEW
U
V
u
v
PE
Monitor
ALM
A2
A1
C
Surge
Side
Protect
Side
