M-system MDP-24T Instruction Manual

INSTRUCTION MANUAL
LIGHTNING SURGE PROTECTOR FOR
PHOTOVOLTAIC SYSTEM, INSTRUMENT SHELTER
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.
GENERAL
■ FUNCTION & FEATURES
• Designed specifically for 4 – 20mA DC and pulse signal
line including both 4-wire and 2-wire transmitters
• Absorbs surges only without affecting instrumentation
signal
• No interruption of signal by unplugging surge protector
element
■ SPECIFICATIONS
LINE TO LINE
Max. continuous oper-
ating voltage (Uc)
Voltage protection level
(Up) @1kV (100A)
Voltage protection level
(Up) @2kV (1kA)
Leakage current
Capacitance @1 MHz
Response time
Max. discharge current (Imax)
Nominal current (I )
N
Internal series resistance
LINE TO EARTH
30V ±140V
40V ±650V
45V ±800V
≤ 30µA ≤ 5µA
@30V DC @±140V DC
≤ 1000 pF ≤ 100 pF
≤ 4 nsec. ≤ 20 nsec.
5000A (8 / 20 µs)
100mA
20 Ω ±10% including return
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp
MODEL
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.
• Continuous operating voltage must be less than 75V.
■ 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 -20 to +80°C
(-4 to 176°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.
COMPONENT IDENTIFICATION
Head Element
Specifications
Head Element is secured to Base
with screw when the surge protector
is shipped from Factory.
MDP-24T
Base
Ground Terminal (G)
(used as mounting bracket)
EM-8222 Rev.1 P. 1 / 3