MAT2
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-8149 Rev.6 P. 2 / 6
POINTS OF CAUTION
■
INSTALLATION
• DANGER!
The MAT2 is classified as IEC 61643-1 (EN 61643-11)
Class II; DO NOT install the MAT2 at the point common
to an external lightning protection device such as a light-
ning rod. The MAT2 will be subject to the danger of direct
lightning.
• DANGER!
DO NOT perform an installation and wiring of the MAT2
during thunder storms.
• Indoor use.
• Be sure to house the MAT2 inside an metal enclosure for
safety. Even though the MAT2 is capable of withstanding
an induced discharge current expected in normal condi-
tions, it is entirely possible to be hit by a certain strong
lightning exceeding its designed capacity. It is also sub-
ject to a direct hit by a lightning. The MAT2 will be de-
stroyed by such high lightning energy.
• We recommend to install the MAT2 in a position where
the monitor LED is clearly visible to facilitate inspection
and maintenance.
• DO NOT install the MAT2 where it is subjected to con-
tinuous vibration. Do not apply physical impact to the
MAT2.
• Environmental temperature must be within -5 to +55°C
(23 to 131°F) and relative humidity within 30 to 90% RH
in order to ensure adequate life span and operation.
■
HIGH TEMPERATURE
• DANGER!
The front parts of the surface may be hot. DO NOT grab
the sides of the module. When the MAT2’s discharge el-
ement (zinc oxide element) gradually degrades, its in-
creased leakage current causes high temperature at the
surface of the MAT2, until the discharge element is final-
ly separated from the power line by the thermal breaker.
However, a part of the module may already be too hot to
touch safely if the module is near the end of its life.
■
OPERATIONAL VOLTAGE
• DO NOT connect a power source of which the nominal
operational voltage exceeds the MAT2’s maximum con-
tinuous operational voltage, Uc value indicated on the
specification label at the front.
• Be sure that the peak voltage does not exceed 1.4 times
the maximum continuous operational voltage. Distorted
waveform may have extremely high peak voltage.
■
DIELECTRIC STRENGTH TESTING
• Conduct the dielectric strength test with all power sup-
ply wires removed. The MAT2 will start discharging at
the described discharge voltage if a test voltage is applied
with all power supply wires connected. It will result in an
insulation failure.
■
TERMINAL COVER
• DO NOT remove the terminal cover as it is open/close
type.
■
AND....
• We recommend that you keep spare MAT2s so that you
can replace them quickly when necessary.
FEATURES
■
CURRENT CAPACITY
• The one-port SPD can be used regardless of the load cur-
rent.
■
HIGH PERFORMANCE & RESPONSE TIME
• The discharge element (zinc oxide varistor) between the
lines does not disturb the power line with follow current
normally observed by a spark gap after a discharge. The
response time is also very high.
■
HIGH DISCHARGE CURRENT CAPACITY
• The MAT2 is designed to withstand 20 kA or 40 kA surges
(test waveform 8/20 µsec.). High design standard com-
pared to normally induced surge current level of 1 kA.
■
THERMAL BREAKER
• The power supply voltage is continuously applied to the
incorporated discharge element (zinc oxide element).
Degraded element is automatically separated from the
power lines for safety to prevent overheating caused by
leakage current.
• The failure is notified visually by the monitor LED and
remotely by an alarm contact.
■
PREVENTING ELECTRIC SHOCK
• The MAT2’s terminal section with a terminal cover has
IP20 protection level to protect from an electric shock.
• The MAT2 is designed for use with ring shape solderless
terminals for a wide range of wire sizes from 2 to 14 mm
2
.
SCHEMATIC CIRCUITRY
2
1
PE
A2
C
A1
N
3
ѳ
Monitor LED
ѳ
: Thermal breaker
Note: Terminals C, A1 & A2 are available for ‘Alarm output’ code ‘A.’
The schematic shows the relay contact status of a thermal trip or
power off.
Alarm
Output
Circuit
ѳ
ѳ
ѳ
U
U
U
U
INSTALLATION
■
DIN RAIL MOUNTING
The MAT2 is mounted on a 35-mm-wide DIN rail. Set the
MAT2 so that its DIN rail adaptor is at the bottom. Position
the upper hook at the rear side of base on the DIN rail and
push in the lower.
When removing, push down the DIN rail adaptor utilizing a
minus screwdriver while avoiding a wiring to PE terminal
and pull.
