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-8123 Rev.11 P. 1 / 3
INSTRUCTION MANUAL
LIGHTNING SURGE PROTECTOR FOR
LOW FREQUENCY USE
MODEL
MDP-SP
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:
Surge protector ....................................................................(1)
DIN rail mounting adaptor* ...............................................(1)
Screws for DIN rail mounting (M4 × 8)* ...........................(2)
*Included with option code /A33
■
MODEL NO.
Confirm Model No. marking on the product to be exactly
what you ordered.
■
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.
CAUTION (DISCHARGE CAPACITY)
M•RESTER
New Element Label
Blue: 5000A
(Black: 1000A)
New Base Label
Blue: 5000A
(Black: 1000A)
The discharge capacity
of this unit has been in-
creased to 5000 Amps.
However, using an older
style base socket with
any upgraded head ele-
ment could decrease the
overall effectiveness of
the unit.
The upgraded version
element and socket are
distinguished by blue labels affixed to them. If you are re-
placing the head element only, be sure to check the label
color of the base socket that is already installed.
GENERAL
■
FUNCTION & FEATURES
• Designed specifically to protect frequency generating de-
vices such like flowmeters and frequency transmitters
from lightning surge damage that enters on the wiring
between these instruments
• Absorbs surges only without affecting instrumentation
signal
• No interruption of signal by unplugging the protector ele-
ment
■
SPECIFICATIONS
LINE TO LINE
LINE TO
EARTH
Max.continuous
operating voltage (Uc)
±14V
B – C
14V
B or C – A
±140V
Voltage protection level
(Up)@1kV (100A)
±30V
2 – 3
30V
2 or 3 – 1
±650V
Voltage protection level
(Up)@2kV (1kA)
±30V
2 – 3
30V
2 or 3 – 1
±800V
Leakage current
≤ 10μA
@±14V DC
B – C
≤ 10μA
@14V DC
B or C – A
≤ 10μA
@±140V DC
Capacitance @1 MHz
≤ 1000 pF
≤ 100 pF
Response time
≤ 0.1 microseconds
Max. discharge current (Imax)
5000A (8 / 20 μs)
Nominal current (IN)
50mA
Internal series resistance
10 Ω ±10%
POINTS OF CAUTION
■
CONFORMITY WITH EU DIRECTIVES
• The actual installation environments such as panel con-
figurations, connected devices, connected wires, may af-
fect the protection level of this unit when it is integrated
in a panel system. The user may have to review the CE
requirements in regard to the whole system and employ
additional protective measures to ensure the CE conform-
ity.
■
ENVIRONMENT
• When heavy dust or metal particles are present in the
air, install the surge protector inside proper housing with
sufficient ventilation.
• 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) with relative humidity within 30 to 90% RH
in order to ensure adequate life span and operation.
■
DIELECTRIC STRENGTH TEST
• Loosen the screw located at the left-center of the element
and remove the element module from the base before
conducting a dielectric strength testing. Otherwise the
element will start discharging at a voltage exceeding the
max. continuous operating voltage (Uc), which can cause
insulation failure of the module.
Be sure to return the element and fasten securely after
the test.
■
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.
