LIGHTING ARRESTERS FOR 3-WIRE SENSORS ARREX MODEL SK-312 TYPICAL APPLICATIONS ¡¤ Three-Wire Sensors or transmitter for instance Potentiometer/Resistance Temperature ELEMENT COMMOM SPECIFICATIONS SOCKET Construction : plug-in Housing material : plastic (black) INSTALLATION Operating temperature : -10 to +60¡É Operating humidity : 90%RH(non-condensing) Mounting : WALL or DIN rail Size : W28.5 X H71 X D78.5 Weight : 72g The Vector Lightning Arrester Model SK-312 is designed specifically for 3-wire sensors transmitter. Lightning surges damage that enters into wiring between the potentiometter/RTD and transmitter will be absorbed by the SK-312, thus will protect the potentiometer and transmitter. SPECIFICATIONS Model DESCRIPTIONS PARTICULAR DATA ¡¤ ¡¤ ¡¤ ¡¤ ¡¤ SK-312 Discharge Voltage btwn L-SG ¡¾ 16V Maximum Leakage Current btwn L-SG btwn L or SG-E 5§Ë (at 16VDC) btwn L-SG ¡¾ 34V(8x20§Á ) btwn L or SG-E 250V (8x20§Á ) Max. surge Voltage 1mA (at 135VDC) btwn L-SG <0.001nsec btwn L or SG-E <1¥ì sec Internal Series Resistance Max. Load Current SCHEMATIC CIRCUITRY TO CABLE TO EQUIPMENT 6 3500A(8x20§Á ) Discharge Current Capacity Response Time DIN rail or wall mount Compact and light-weight Plug-in structure No interruption of transmission when unplugging the arrester element Lightning surges are absorbed to a large extent. The SK-312 has high responsiveness 4 + - L1 5 + - L2 7 COM SG 3 1 Approx. 0.1¥Ø (including return) 100mA SOCKET D1 + D2 + SG COM FG FRAME GROUND DISCHARGE ELEMENTS 8 EARTH (<100§Ù ) E 2 Model : PTF08A-B DIMENSIONS [Scale : mm(inch)] 2-4.5X6 (0.18X0.24) HOLE 8(0.31) 8-M3, 5X8 (0.14X0.31) SCREW TERMINAL TOP VIEW FIXTURE SIZE 19(0.75) SOCKET ELEMENT 2 4 3 6 5 8 30(1.18) 6 65(2.56) 28.5(1.12) 1 7 HOLE 4.5(0.18) (0.24) TEL: (0331)245-6001(REF) FAX : (0331)245-6182 ARREX-SERIES