MATP
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-8150 Rev.4 P. 4 / 5
WIRING
■
LEADWIRES
Conductor cross-section area: 5.5 mm
2
minimum for both
the power and the earth lines. However, a local industrial
standard requirement for wiring should take precedence.
■
SOLDERLESS TERMINAL
Applicable ring tongue terminal without insulation sleeve
is as indicated below. Spade tongue terminal must conform
with the ring type size.
In order to ensure IP20 protection (IEC 60529) with a sol-
derless terminal, cover the terminal with a insulation cap
to prevent direct touching by a hand.
F
d : M5 use
B ≤ 13.0 mm
F ≥ 7.0 mm
(F ≥ 8.2 mm for sharing terminals)
T ≤ 1.8 mm
• Applicable Solderless Terminal Size
diameter d
B
T
■
TORQUE
Tighten the screw terminals securely. Maximum allowable
torque is of 2.5 N·m.
■
WIRE LENGTH
Keep the wire length to the minimum for both the power
source side and the earth side. The wire length between the
branch point and the earth should ideally be less than 0.5
meters. Extra long wires should not be bundled in coils, but
be cut to the minimum required length.
EARTHING
■
COMMON EARTHING WITH CROSS-OVER WIRE
Basically a common earthing with cross-wiring between
the MATP and the protected device is recommended for ad-
equate protection. Earthing resistance should be less than
100 ohms. If the protected device has no earth terminal,
earth only the MATP.
The earthing point should be close to the MATP side as
shown below.
Cross-wiring
Protected
Device
G
+
-
L+
L-
SPD
ALARM OUTPUT
Optional breack-contact relay output is available to alert
when the thermal breaker has separated the discharge ele-
ment from the power supply circuit.
If the alarm output should be transmitted remotely via out-
door cables, a surge protector for signal line is required.
Choose a circuit breaker with an alarm output. Configure a
logical addition sequence so that the alarm trips when both
or either of the MATP or the breaker alarm trips.
■
RELAY SPECIFICATIONS
Alarm output: The breack-contact relay trips when the ther-
mal breaker operates.
Rated load: 250V AC @50mA (resistive load)
24V DC @50mA (resistive load)
■
CONNECTION
Terminal: Tension clamp
Applicable wire size: 0.13 to 1.5 mm
2
Stripped length: 8 mm
CHECKING
■
WIRING
• Make sure that wiring is done as instructed in the con-
nection diagram.
• Make sure that the earth terminal (G) is connected to the
metallic housing of protected equipment.
• Make sure that the earth terminal (G) is earthed to earth.
