features: features: 18 cii technologies / p.o. box 4422 / santa barbara, ca 93140 / ph 805.684.4560 / fax 805.684.9679 / e-mail info@kilovac.com / website www.ciitech.com 28-1800 vdc ? coil data ? 400 a carry, 2,500 a interrupt @ 320 vdc ? hydrogen dielectric for power switching high current loads ? internal hall effect contact position sensor detects contact welds ? ideal for circuit protection, control, battery switching, and main power safety disconnect ? versatile power, voltage, and current operating range: 28-1800vdc switch tested ? internal economizer provides: - 4w typical hold power independent of temperature & voltage variance - emi spectrum tested and approved ? patented "hammer effect" mechanism breaks light contact welds ? patented hermetically "super-sealed" environment chamber uniquely protects all moving parts ? can operate in harsh environments ? moving contact rotates to provide fresh contact surface for low contact resistance and low power consumption ? sealed control connector. mating connector with flying leads p/n 2625 available, see page 59 ? bi-directional power switching ? fast operate and release time ? low power consumption ? auxiliary contacts product specifications EV250-5A 12 9 7 5 2.5 0.33 200 units vdc a ms kilovac EV250-5A - 400 amps ("czonka ii evx") make & break load switching contact ratings* parameter voltage* (nominal ) pickup (close), max. hold, min. dropout (open), min. current (@vsnom/ 25 o c) inrush, max. holding, standby, max. inrush time, max. for detailed specifications and recommendations, refer to the EV250-5A sales drawings. * for circuit conditions and actual data refer to the ev250 hot switch study. since each application is unique, user is encour aged to verify rating in actual application. 1 10 100 1,000 10,000 100,000 1 10 100 1,000 10,000 100,000 28vdc life cycles switchin g current 270vdc 400vdc 600vdc 900vdc 1800vdc re g ion of contact levitation. operation prohibited mom entary carry re g ion 400a 9000a 120vdc * refer to sales drawing, qualification test plan for actual mix of pre-charge and break currents used on each cycle. * other special coil voltages available upon request * * do not use a free wheeling diode or capacitor across the coil. built in suppression limits back emf to zero volts w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w o w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w w part number contact arrangement .......................................................... contact form ........................................................................ continuous current carry, max. ........................................ 6.5 minutes .................................................................... break current @ 320 vdc ................................................... contact resistance, max. ................................................... contact resistance, typ. .................................................... dielectric at sea level (leakage < 1ma) ............................ shock, 11 ms 1/2 sine (peak), operating ......................... vibration, sinusoidal (80-2000 hz, peak) ......................... operating ambient temperature range ............................ load life, @320 vdc, 95% weibull* ................................. operate time, 25 o c .............................................................. close (includes bounce) typ. ....................................... bounce (after close only), max. .................................... release time (includes arcing), max. at 2500 a ........ insulation resistance @ 500 vdc, min. ............................ weight, nominal .................................................................. unit EV250-5A spst-no x a 400 a 500 a 2,500 ohms 0.0003 ohms 0.0001 - 0.0002 vrms 2,200 g's peak 30 g's 20 c -40 to +85 cycles see page 19 ms 18 ms 5 ms 15 mohm 100 pound (kg) 1.76 (0.8)
features: features: cii technologies / p.o. box 4422 / santa barbara, ca 93140 / ph 805.684.4560 / fax 805.684.9679 / e-mail info@kilovac.com / website www.ciitech.com 19 life ratings and qualification test plan normal o p erations abnormal operations test # 1 2 3 4 current reference graph and -250 a 2500 a voltage test circuit diagram (sht. 8) 320 v 320 v load type capacitive capacitive resistive resistive % pre charge 90% 70% n/a n/a switch mode make only make only make/ break break only sequence 1 10k cycles 10 cycles 2 2 2 10k 10 2 3 10k 10 2 4 10k 10 2 2 5 10k 10 2 etc. continue cycling to relay failure the testing objective is to verify proper relay function for a given number of consecutive and cumulative cycles under both normal and abnormal conditions in a variety of load switching applications. the life rating of 40k cycles minimum was calculated with 95% weibull reliability. current vs time contacts closed into 70% and 90% capacitor pre charge 0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 012345678 ev250 contact ratings (1) resistive load includes inductance l = 25 uh. load @ 2500 a tested @ 200 uh. (2) conductor: 2 each of copper 54 mm2 (awg 0) required for > 250 a carry. 1 copper (awg 0) conductor recommneded for 250 a (3) life based on projected weibull life with 95% reliability electrical data (over temperature range - max. terminal temp. = 200 o c) make/break life for capacitive & resistive loads at 320 vdc (1) (2) @ 90% capacitive pre-charge cycles 50,000 @ 70% capacitive pre-charge cycles 50 @ -250 a (2 consecutive, reverse polarity) (1) cycles 10 @ 3300 a (break only, 2 consecutive) (1) cycles 4 mechanical life cycles 100,000
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