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

 BY2 type SPD is suiting to A.C 50/60 Hz , 380V and the following electric power systems, such as TT , IT ,TN-S , TN-C and TN-C-S . The product functions as equi-potential connection in case of lightning striking at the joint of LPZOA and LPZ1 or LPZOB and LPZ1. It protects the electric network shocked by the thunder or surge over voltage and it also can be used in the TT system when combined with the voltage limiting SPD formed as the “ 3+1 ”type.2.       Technical Parameters

	BY2-30/2.5	BY2-30/4.0	BY2-60/2.5	BY2-60/4.0
Uc	385V AC	385V AC	385V AC	385V AC
Power frequency arcing voltage Uf	> 1.0kV	> 1.5kV	> 1.0kV	> 1.5kV
Test grade	ClassI	ClassI	ClassI	ClassI
Insulating resistance (Risol)	> 5 MΩ	> 5 MΩ	> 5 MΩ	> 5 MΩ
Up	< 2.5 kV	< 4.0 kV	< 2.5 kV	< 4.0  kV
Response time  ns	< 100 ns	< 100 ns	< 100 ns	< 100 ns
Impulse peak current	30 kA	30 kA	60 kA	60 kA
Electric charge Q	15As	15As	30As	30As
In(8/20μs) kA	100 kA	100 kA	200 kA	200 kA
Rated disconnection follow current value Ip	4.5kA/250V	4.5kA/250V	6.0kA/250V	6.0kA/250V
The rated current of fuse	125A	125A	250A	250A
Defending grade	IP20	IP20	IP20	IP20

  

BY2 series Surge Protective Devices