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. 4 / 6
■
CONNECTION EXAMPLES BY POWER SYSTEMS
For circuit breakers in the figures, refer to ‘INSTALLING THE CIRCUIT BREAKERS.’
Abnormal voltages appearing in case of a light load or a ground loop must be within the maximum continuous operational
voltage when selecting the MAT2 models.
POWER SYSTEM
Power System (example)
SPD
Single-phase/2-wire 220V AC
MAT2–240x
Single-phase/2-wire 110V AC
MAT2–240x
SPD
Single-phase/2-wire 220V AC
MAT2–4404x
Single-phase/2-wire 110V AC
MAT2–240x
Single-phase/3-wire 400/200V AC
MAT2–4404x
Single-phase/3-wire 220/110V AC
MAT2–240x
SPD
Single-phase/2-wire
Generator or transformer
Generator or transformer
SPD
MAT2–4404x
MAT2–240x
Three phase/3-wire (delta connection)
(N)
Protected
device
G
2
1
PE
N
A1
C
A2
3
SPD
Alarm output
Circuit breaker
*
1. For TT system, in order to ensure safe failure mode at TOV due to earth fault on high-voltage systems, connect between terminal 2 and N of the MAT2.
*
2. For TT system, in order to ensure safe failure mode at TOV due to earth fault on high-voltage systems, install a four-pole (three-pole plus neutral)
circuit breaker.
*
3. For 440V AC three-phase/3-wire system, use a residual current circuit breaker with overcurrent protection.
*
4. For single-phase/2-wire system, connect lines to terminal 1 and 2 of the MAT2. For single-phase/3-wire system, connect the neutral line to terminal 2
of the MAT2.
Three-phase/4-wire 400V AC
MAT2–4404x
Three-phase/4-wire 220V AC
MAT2–2404x
Protected
device
G
2
1
PE
N
A1
C
A2
3
SPD
Alarm output
Circuit breaker
N
Power System (example)
Power System (example)
Power System (example)
CONNECTION
EXAMPLE
CONNECTION
EXAMPLE
POWER SYSTEM
Three-phase/3-wire 400V AC
Three-phase/3-wire 220V AC
Three-phase/4-wire (star connection)
Single-phase/2-wire
(three-phase delta connection
earthed in the middle of phases)
*
3
*
1
Generator or transformer
(N)
Protected
device
G
2
1
PE
N
A1
C
A2
3
SPD
Alarm output
Circuit breaker
*
1
Generator or transformer
N
Protected
device
G
2
1
PE
N
A1
C
A2
3
SPD
Alarm output
Circuit breaker
*
1
*
4
Single-phase/3-wire
*
2
