TN Systems (common earth)
TT Systems (independent earth)
N
Protected
device
G
Three-phase
/3-wire
(V connection)
Three-phase
/4-wire
(V connection)
L1
L2
L3
SPD2
POWER (e.g.)
SPD1
Three-phase/4-wire 220V AC
MAL-230x
SPD2
–
ACC
CNB2-5
POWER (e.g.)
SPD1
Three-phase/4-wire 220V AC
MAL-230x
SPD2
MALN-230
ACC
CNB2-7
ACC
SPD1 SPD1 SPD1
Protected
device
G
L1
L2
L3
ACC
SPD1 SPD1 SPD1
N
L1
L2
L3
*
1. Wiring only for three-phase/4-wire
Generator or transformer
Generator or transformer
POWER SYSTEM
Circuit
breaker
Circuit
breaker
*
1
*
1
MAL
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-8162 Rev.1 P. 6 / 8
