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28-1800 Vdc
Kilovac EV250-1A & 1B - 400 Amps ("Czonka II EVX")
Make & Break Load Switching
Features: Hydrogen dielectric for power switching high current loads 400 A carry, 2,500 A interrupt @ 320 Vdc Ideal for circuit protection, control, battery switching, and main power safety disconnect Versatile power, voltage, and current operating range: 28-1800Vdc tested Low-cost compact version for volume production applications. Requires external coil economizer (PWM or lower hold voltage) Patented "hammer effect" mechanism breaks light contact welds Patented "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 Features: power comsumption and low Sealed control connector. Mating connector with flying leads P/N 2005 available, see page 59 Logic control enabled by external economizer P/N 9913 High temperature (135oC) model with 10 inch flying leads available (-4A call factory for sales drawing) Bi-directional power switching Fast operate and release time
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
CONTACT RATINGS*
1 0 0 ,0 0 0
400A M o m en t a ry C a rry R eg i o n
9 0 0 0A
1 0 ,0 0 0
12
40 0V dc
6 0
28
0V
dc
V dc
L ife C y c le s
1 ,0 0 0
R eg i o n o f C on t a c t L e v it a ti on . O pe r at io n P ro h ib i te d
0 V dc
27 0V
18 00
dc
90
100
0V
Vd c
dc
10
1 1 10 100 1 ,0 0 0 1 0 ,0 0 0 1 0 0 ,0 0 0
S w itc hin g C u r re n t
* For circuit conditions and actual data refer to the EV250 hot switch study. Since each application is unique, user is encouraged to verify rating in actual application.
Part Number
PRODUCT SPECIFICATIONS UNIT EV250-1A
SPST-NO X A A A ohms ohms Vrms G's Peak G's
o
COIL DATA*** EV250-1B
SPST-NO X 400 500 2,500 0.0003 0.0001 - 0.0002 2,200 30 20 -40 to +85 See Page 19 30 5 15 100 1.54 (0.7)
Parameter Voltage* (nominal ) Pickup (close), max. Dropout (open), min. Coil Resistance @ 25oC, +/- 10% Coil Energy, max. Coil Clamping
EV250-1A EV250-1B Units 12 8.3 24 16.6 10.2/7.6 Vdc
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, 25oC .............................................................. Close (includes bounce) Typ. ...................................... Bounce (after close only), Max. .................................. Open (includes arcing), Max. ...................................... Insulation Resistance @ 500 Vdc, Min. ............................ Weight, Nominal ..................................................................
*
400 500 2,500 0.0003 0.0001 - 0.0002 2,200 30 20 -40 to +85 See Page 19 30 5 15 100 1.54 (0.7)
Continuous Hold, max/min ** 5.1/3.8
0.88 - 3.3 2.4 - 6.6 3 0.2 12 0.2 Ohms J
3 x nom. 3 x nom.
oC
cycles ms ms ms Mohm pound (kg)
* Do not apply continously. Requires external coil economizer. Other special coil voltages available upon request. * * At maximum continuous current and maximum ambient temperature. Hold voltage must be maintained within the limits specified to keep contacts closed and to prevent coil overheating. * * * Do not use a free wheeling diode or capacitor across the coil.
PART NUMBER SELECTION
Sample Part No. EV250-1 Coil Voltage A = 12 Vdc, Nominal B = 24 Vdc, Nominal A
Refer to Page 19 for actual mix of precharge and break currents used on each cycle.
For detailed specifications and recommendations, refer to the EV250-1A & B sales drawings.
Tyco Electronics / www.tycoelectronics.com / Factory Direct Technical Support: 800-253-4560, ext. 2023 (U.S., Canada, Mexico) or 805-220-2020, ext. 2023 (International)
16
EV250 Contact Ratings
Features:
C UR RE NT vs T IM E
C ON TA CT S C LOSED I NT O 7 0 % AN D 9 0% C A PAC IT OR PR E C HA R GE
7 50 7 00 6 50 6 00 5 50 5 00 4 50 4 00 3 50 3 00 2 50 2 00 1 50 1 00 50 0
0 1 2 3 4 5 6 7 8
Features:
L IF E R A T IN G S A N D Q U A L IF IC A T IO N T E S T P L A N
Test # C u rre n t V o lta g e Load Type % P re C h a rg e S w itc h M o d e N o rm a l O p e ra tio n s 1 2 re fe re n c e g ra p h a n d te s t circ u it d ia g ra m (s h t. 8 ) C a p a c itive C a p a c itive 90% 70% m ake m ake o n ly o n ly A b n o rm a l O p e ra tio n s 3 -2 5 0 A 320 V R e s istiv e N /A m a k e / b re a k 4 2500 A 320 V R e s istiv e N /A b re a k o n ly
S equence 1 0 K c y c le s 1 0 c yc le s 2 2 1 10K 10 2 2 10K 10 2 3 10K 10 2 2 4 10K 10 2 5 E tc . C o n tin u e C y c lin g to R e la y F a ilu re T h e te s tin g o b je c tiv e is to v e rify p ro p e r re la y fu n c tio n fo r a g ive n n u m b e r o f c o n se c u tiv e a n d cu m u la tiv e c yc le s u n d e r b o th n o rm a l a n d a b n o rm a l co n d itio n s in a v a rie ty o f lo a d s w itc h in g a p p lic a tio n s . T h e life ra tin g o f 4 0 K cy c le s m in im u m w a s c a lc u la te d w ith 9 5 % W e ib u ll re lia b ility .
Electrical Data (Over Temperature Range - Max. Terminal Temp. = 200oC)
Make/Break Life for Capacitive & Resistive Loads at 320 Vdc (1) (2) @ 90% capacitive pre-charge @ 70% capacitive pre-charge @ -250 A (2 consecutive, reverse polarity) (1) @ 3300 A (break only, 2 consecutive) (1) Mechanical Life
(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
Cycles Cycles Cycles Cycles Cycles
50,000 50 10 4 100,000
19
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

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