UNIVERSAL SURGE ARRESTER SPD17FM ÷ SPD510FM

UNIVERSAL SURGE ARRESTER SPD17FM ÷ SPD510FM

SPD275, SPD275S and SPD275FM are representatives of a wide range of surge protection devices Class 2 + 3 according to EN 61643-11 and IEC 61643-11 for general use in AC supply nets. Having a  high absorbency at the disposal of interference voltage components propagating along the lines of the result of the switching processes alternatively due to the effects of storm activity. SPD can be applied without the use of DIN rails even in places where there is a tight installation space, as well as an additional measure in applications where the occurrence of overvoltage operates during operation problems. Acc. to customer´s demand is possible to supply this protection device for max. continuous AC operating voltage Uc from 17 to 510V (see TAB 1). Way to access the protected device is designed with flexible leads 1.5 mm2 with length of 20 cm. SPD should be installed as close as possible to the protected equipment.

Each SPD is equipped with a internal thermal fuse, which is used as main fuse and turn off the power protected equipment when it is activate by MOV´s faillure. This fuse can be also mechanicaly coupled with second internal disconnecting (NC) contact, which according to the selected version controls:

- disconnecting overloaded varistor and protected equipment from low voltage network (basic version SPDxxx)
- local internal fault indication LED diode OPERATIONS (SPDxxxS version)
- NC contact FM remote fault - called Fail Monitoring (SPDxxxFM version)
Note 1:  Selection of the protection unit SPD* for AC network user selects acc. to column 2 of the TAB. 1
(the max. continuous AC operating voltage UC).
It must observe the rule that UC has to be 20% higher than the nominal operating voltage UN.
  
For instance for the required UC = 275VAC (ie. UN = 230V), select:
SPD275 (basic version)
or SPD275S (version with local fault LED diode indication)
or SPD275FM version (version with remote indication faults)
 
Note 2: Connection of the AC input voltage to the SPDxxx(S) FM) is carried out between black-blue (L-N) wires.
AC connection of the protected equipment to the SPDxxx(S)(FM) is performed between conductors brown-blue (L1-N) wires