BY3 type SPD is suiting to A.C 50/60 Hz , 220V electric power system and used at the joint of the LPZ2 and LPZ3 zones. 1. Usage and the Scope of Application BY3 type SPD is suiting to A.C 50/60 Hz , 220V electric power system and used at the joint of the LPZ2 and LPZ3 zones. It protects the electric network shocked by the thunder or over voltage. This type belongs to Class 3 and the usage condition is that there must be installed the Class 1 or Class 2 SPD, or it will be damaged by the over impulse current. 2.       Technical Parameters

	BY3-2.5/150	BY3-4.0/320	BY3-6.0/420
Operatingvoltage    Un	110V AC	220V AC	220V AC
Uc	150V AC	320V AC	420V AC
Open circuit voltage( 1.2/50μs ) Uoc	2.5kV	4.0kV	6.0kV
Insulating resistance (Risol)	> 100 MΩ	> 100 MΩ	> 100 MΩ
Voltage protective level  Up	<800 V	< 1 kV	< 1.5 kV
Response time  ns	< 100ns	< 100ns	< 100ns
Operating temperature	-40---- +85°C	-40---- +85°C	-40---- +85°C
Relative humidity	<95 %	<95 %	<95 %
Defending grade	IP20	IP20	IP20
Connection section	1 ---- 4 mm²	1 ---- 4 mm²	1 ---- 4 mm²
Earthing conductor	4 mm²	4 mm²	4 mm²
Wire gage	AWG-2	AWG-2	AWG-2
Installation	35 mm Rail	35 mm Rail	35 mm Rail
Outer covering material	Reinforced fire-retardant nylon PBT   (Grey)	Reinforced fire-retardant nylon PBT   (Grey)	Reinforced fire-retardant nylon PBT   (Grey)

 

BY3 series Surge Protective Devices