EM-8228 Rev.3
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MD-LC2
BEFORE USE ....
Thank you for choosing M-System. Before use, check the
contents of the package you received as outlined below.
If you have any problems or questions on the product, please
contact M-System's Sales Office or representatives.
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PACKAGE INCLUDES:
Lightning surge protector ........................................... (1)
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MODEL NO.
Check that model No. described on specification label is
exactly what you ordered.
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INSTALLATION / INSTRUCTION MANUAL
This manual describes necessary points of caution when
you use this product, installation, and basic maintenance
procedure.
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 certain
extremely high voltages caused by a direct or almost direct
hit by lightning.
M-Rester must be installed according to this installation
/ instruction manual.
POINTS OF CAUTION
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ENVIRONMENT
• When heavy dust or metal particles are present in the
atmosphere, install M-RESTER inside proper housing and
ventilate it.
• Do not install the M-RESTER where it is subjected to
continuous vibration. Do not apply physical impact to the
M-RESTER.
• Environmental temperature must be within -5 to +55°C
(23 to 131°F) and relative humidity within 30 – 90% RH in
order to ensure adequate life span and operation.
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DIELECTRIC STRENGTH TEST
• The unit will start discharging when 15V or greater voltage
is applied bewteen lines and ground. Remote the unit from
the base socket when performing dielectric strength tests.
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AND ....
• We recommend that you keep spare M-RESTERs 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 Lightning Surge Protector for Power Lines
for sufficient protection.
COMPONENT IDENTIFICATION
SPECIFICATIONS
LIGHTNING SURGE PROTECTOR FOR STRAIN GAUGE USE
(6-wire remote sensing)
MODEL
MD-LC2
INSTALLATION / INSTRUCTION MANUAL
Body
Base Socket
Specification
Label
SIG (L1 to L2)
EXC (+ to –)
EXC (S+ to S–)
SIG (L1, L2) to GND
EXC (S+, +) to G
EXC (S–, –) to G
Discharge voltage
±0.3V min.
15V min.
15V min.
±15V min.
+30/-15V min.
±15V min.
Max. surge voltage*
±20V max.
40V max.
40V max.
±40V max.
+65/-40V max.
±40V max.
Leakage current
≤0.2µA
@±0.3V DC
≤2µA
@15V DC
≤2µA
@±15V DC
≤2µA
@±15V DC
Max. line voltage
±0.3V
15V
15V
±15V
+30/-15V
±15V
Response time
4 nanosec.
Discharge current
5000A
(8/20 µsec.)
capacity
Int. series resist.
approx. ≤10Ω
approx. ≤4Ω
approx. ≤10Ω
—
(each line)
Max. load current
100mA
200mA
100mA
—
(each line)
*The maximum voltage that could pass through M-RESTER. Protected equipment must be able to withstand this voltage for a very short time period.
