M-system MH-1201 User manual

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, and basic main-
tenance 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 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.
GENERALS
■FUNCTION & FEATURES
Designed for installation where AC power enters the con-
trol panel for relatively large power consuming equipment
such as large instrumentation panels, computer systems or
telemetering systems in central control rooms or operation
centers
■SPECIFICATIONS
BETWEEN LINES LINE TO GND
MH-1201
MH-2201/2203
Discharge voltage
(p-p) 190V min. 380V min. 410V min.
Max. surge voltage* 350V max. 700V max. 700V max.
Leakage current
≤1A including relay coil
current at rated voltage
≤1mA
@150V DC
(MH-1201)
@300V DC
(MH-2201/2203)
Response time ≤0.1 µsec
Discharge current 10000A (8 / 20 µsec.)
Max. load current 200A
Voltage drop ≤2V (50/60 Hz)
Rated line voltage 100V/110V/120V AC (MH-1201)
200V/220V/240V AC (MH-2201/2203)
*The maximum voltage that could pass through M-RESTER.
Protected equipment must be able to withstand this voltage
for a very short time period.
POINTS OF CAUTION
■ENVIRONMENT
• When heavy dust or metal particles are present in the at-
mosphere, 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
with a relative humidity within 30 to 90% RH in order to
ensure adequate life span and operation.
■DIELECTRIC STRENGTH TEST
• The MH starts discharging at 410V or more voltage ap-
plied across power supply terminals and metallic hous-
ing. DO NOT conduct a dielectric strength test with the
MH connected to a power source.
• For confirming insulation of the unit, conduct the dielec-
tric strength test WITH ALL WIRES REMOVED, or con-
duct an insulation resistance test (@250V DC).
■RATED CURRENT
• Be sure that the rated current of protected equipment
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 M-RESTERs so that
you can replace them when necessary.
COMPONENT IDENTIFICATION
Body
Power Pilot Lamp
Grommet with Film
Nameplate
LIGHTNING SURGE PROTECTOR FOR POWER SUPPLY USE
(200A) MODEL
MH-1201
MH-2201
MH-2203
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: inf[email protected].jp
EM-8181 Rev.6 P. 1 / 4
INSTRUCTION MANUAL

INSTALLATION
Refer to the drawings below.
■EXTERNAL DIMENSIONS mm (inch)
PL
NP
250 (9.84)
300 (11.81)
250 (9.84) 6 (.24)
550 (21.65) 590 (23.23) 630 (24.80)
50 (1.97)50 (1.97) 135 (5.31)
4–8.5 (.33) dia.
MTG HOLE
GROMMET WITH FILM
SG–32A
(32 mm or 1.26" dia.)
PL
NP
: POWER PILOT LAMP
: NAMEPLATE
■MOUNTING REQUIREMENTS mm (inch)
250 (9.84)
590 (23.23)
4–8.5 (.33) dia.
MTG HOLE
MH-1201 / MH-2201 / MH-2203
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: inf[email protected].jp
EM-8181 Rev.6 P. 2 / 4

TERMINAL CONNECTIONS
Connect the unit as in the diagram below.
Be sure to cross-wire between the Ground terminal (4) and metallic housing of the protected equipment. (100Ω max.)
W
PROTECTED
SYSTEM
MH-1201
MH-2201
UR
EB
BREAKER
FOR
LEAKAGE
BREAKER
FOR
WIRING
AC POWER
SUPPLY
Be sure to install
T
CROSSOVER WIRE
G G
W
PROTECTED
SYSTEM
MH-2203
UR
EB
BREAKER
FOR
LEAKAGE
BREAKER
FOR
WIRING
AC POWER
SUPPLY
T
VS
Be sure to install CROSSOVER WIRE
G G
■GROUNDING
M-RESTER PROTECTED
EQUIPMENT
G
G
CROSSOVER WIRE
GROUNDING
(100 ohms or less)
A crossover wire between M-RESTER ground and ground or metallic
housing of equipment is required for protection.
If the protected equipment has no ground terminal, ground the
M-RESTER only.
MH-1201 / MH-2201 / MH-2203
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: inf[email protected].jp
EM-8181 Rev.6 P. 3 / 4

MAINTENANCE
Check M-RESTER periodically. Many cases of lightning are
ignored, and even lightning at a far distance often causes
inductive surges.
We recommend that you check your M-RESTER about twice
a year, before and after the rainy season. Check whenever
you experience a strong lightning occurrence.
Checking procedure is explained in the following:
■CHECKING
WIRING
• Make sure that wiring is done as instructed in the con-
nection diagram.
• Make sure that the Ground terminal (G) is connected to
the metallic housing of protected equipment.
• Make sure that the Ground terminal (G) is grounded to
earth.
POWER PILOT LAMP
• Supply appropriate AC voltage through the M-RESTER
and check the LEDs. When the LED is off despite that
power is supplied, replace the M-RESTER.
DISCHARGE FUNCTION
Turn off the power supply and remove all wiring connected
to MRESTER before testing its discharge capability as fol-
lows:
• Check resistance across the following terminals on the
high resistance range of multimeter (infinite standard).
MH-1201, MH-2201: Terminals U-W, U-G, W-G
MH-2203: Terminals U-V, U-W, U-G, V-W, V-G, W-G
• Check that discharging occurs across the same terminals
with a 500V DC megger. (Indicator of the megger reaches
over-scale.)
• If any of the above tests shows negative, replace the M-
RESTER.
MH-1201 / MH-2201 / MH-2203
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: inf[email protected].jp
EM-8181 Rev.6 P. 4 / 4