Brief
introduction:
FA906/FA9-68 Protectors are inserted into the
FT203/FA8-68 Protection Terminal Block respectively, forming the protection
circuits, which can provide the following protection against over-voltage and
over-current:
1. The surge voltage caused by lightning on or around
the external line.
2. The
short-time AC voltage inducted on external lines, when the power line, the power
system or the electric railway system is broken down in the neighborhood of the
external line.
3. The
external line directly collides against a 220 V power line.
Each protector has test eyelet, which can coordinate
with the special test plug to test the external line as well as the components
inside the protector.
Structure:
PTC+GDT+LED
PTC+SA+LED
IC+LED
Note: GDT
– Gas Discharge Tube; SA – Semiconductor Arrester;
IC – Integrated
Circuit
Technical
Specification:
Insulation
resistance ≥1000MΩ
Contact
resistance difference between a line and b line:
≤1Ω
Lower Voltage Limit: GDT protector (100V/s escalating
rate) ≥190V
SA protector
(100KV/s escalating rate) ≥190V
Upper Voltage
Limit: GDT protector (100V/s escalating rate) ≤260V
(1KV/us escalating rate) ≤800V
SA protectors (100KV/s escalating rate) ≤260V
(1KV/us escalating rate) ≤400V
Alarming current ≥2.5 A (virtual value), with
responding time ﹤15
seconds
