Surge Protection Device Types
Product Details
BY3 Surge protective device
 |  |  |
| BY3-2.5 | BY3-4.0 | BY3-6.0 |
Usage and application scope
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 surge 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
Model and meaning
Technical Parameters
Item | BY3-2.5/150 | BY3-4.0/320 | BY3-6.0/420 |
operating voltage Un | 110V AC | 220V AC | 220V AC |
Maximum continuous operating voltage Uc | 150V AC | 320V AC | 420V AC |
Open circuit voltage ( 1.2/50µs ) Uoc | 2.5kV | 4.0kV | 6.0kV |
Insulating resistance (Risol) | > 100 M O | > 100 M O | > 100 M O |
Voltage protective level Up | <800 V | < 1 kV | < 1.5 kV |
Response time ns | < 100ns | < 100ns | < 100ns |
Operating temperature | -40---- +85oC | -40---- +85oC | -40---- +85oC |
Relative humidity | <95 % | <95 % | <95 % |
Defending grade | IP20 | IP20 | IP20 |
Connection section | 1 ---- 4 mm2 | 1 ---- 4 mm2 | 1 ---- 4 mmm2 |
Earthing conductor | 4mm2 | 4mm2 | 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) |
Installation position and application
1. Installed at the joint of the LPZ2 and LPZ3 zones.
2. Generally applied in computer equipment, information equipment, electronic equipment and in front of control equipment or near the socket box 220V D grade surge arrestor.
3. It adopts 35 mm DIN rail.
4. It is linked by 1 -4 mm2 copper wire, and the length of the wire can't be longer than 500mm. The earth cable should choose the double color wire which is over 4 mm2
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