Group SPD Surge Protective Devices

Group SPD, which is suiting to A.C 50/60 Hz , 380V and under 380V voltage electric power system 1..       Usage and the Scope of Application Voltage limiting type SPD combined with voltage switching type SPD is formed the Group SPD, which is suiting to A.C 50/60 Hz , 380V and under 380V voltage’s electric power system and protects all the distribution systems shocked by the thunder or surge over voltage. Since the voltage switching SPD is connected between zero line and earth line, at the same time with its much higher maximum continuous operating voltage and enough impulse current capacity, it will have its peculiar superiority when used in TT system.2.       Technical Parameters Table 1

Group No.		“3+1”—1	“3+1”—2	“3+1”—3
“ 3 ”		BY4-100/3N-385	BY4-100/3N-320	BY1-B/3N-320
“ 1 ”		BY2-60/4.0	BY2-60/2.5	BY2-30/2.5
Maximum continuous operatingvoltage    Uc	L/N-PE	385V	385V	385V
	L-N	385V	320V	320V
Voltage protectivelevel  Up	L/N-PE	< 4.0kV	< 2.5kV	< 2.5kV
	L-N	< 3.0kV	< 2.5kV	< 2.5kV
Nominal discharge currentIn(8/20μs) kA	L/N-PE	100kA	100kA	100kA
	L-N	60kA	60kA	30kA
Maximum discharge currentImax (8/20μs) kA	N-PE	100kA	100kA	60kA
Impulse current  limp (10/350μs) kA	N-PE	60kA	60kA	30kA

 Table 2

Group No.		“3+1”—4	“3+1”—5	“3+1”—6
“ 3 ”		BY1-C/3N-320-20	BY1-C/3N-320-20	BY1-D/3N-275-5
“ 1 ”		BY2-30/2.5	N-PE-1	N-PE-2
Maximum continuous operatingvoltage    Uc	L/N-PE	385V	385V	385V
	L-N	320V	320V	275V
Voltage protectivelevel  Up	L/N-PE	< 2.5kV	< 2.0kV	< 1.5kV
	L-N	< 1.5kV	< 1.5kV	< 1.0kV
Nominal discharge currentIn(8/20μs) kA	L/N-PE	100kA	40kA	40kA
	L-N	20kA	20kA	5kA
Maximum discharge currentImax (8/20μs) kA	L-N	40kA	40kA	10kA
Impulse current  limp (10/350μs) kA	N-PE	30kA	12kA

 Table 3

Group No.		“P+1”—1	“P+1”—2	“P+1”—3
“ P ”		BY1-B/1-320-30	BY1-C/1-320-20	BY1-D/1-275-5
“ 1 ”		N-PE-1	N-PE-2	N-PE-3
Maximum continuous operatingvoltage    Uc	L/N-PE	385V	385V	385V
	L-N	320V	320V	275V
Voltage protective level   Up	L/N-PE	< 2.0kV	< 1.5kV	< 1.5kV
	L-N	< 1.5kV	< 1.5kV	< 1.0kV
Nominal discharge currentIn(8/20μs) kA	N-PE	40kA	40kA	40kA
	L-N	30kA	20kA	5kA
Maximum discharge currentImax (8/20μs) kA	L-N	60kA	40kA	10kA
Impulse current  limp (10/350μs) kA	N-PE	12kA

 

Group SPD Surge Protective Devices