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28-1800 Vdc
Kilovac EV250-2A & 2B - 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 Internal coil economizer provides: - 4W typical hold power independent of temperature & voltage range - EMI spectrum tested and approved - Built-in coil suppression Patented "hammer effect" mechanism breaks light contact welds Patented hermetically "Super-sealed" environment chamber uniquely protects ALL moving parts Features: Can operate in harsh environments Moving contact rotates to provide fresh contact surface for low contact resistance and low power comsumption Sealed control connector. Mating connector with flying leads P/N 2005 available, see page 59 Special versions available: - Economical (-8A/B) for light duty power switching (without arc blowout magnets - 10 inch flying leads model (-7A)
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
0V
28
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 d c
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 h ing C u rre 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 EV250-2A
SPST-NO X A A A ohms ohms Vrms G's peak G's
o
COIL DATA** EV250-2B
SPST-NO X 400 500 2,500 0.0003 0.0001 - 0.0002 2,200 30 20 -40 to +85 See Page 19 18 5 15 100 1.76 (0.8)
Parameter Voltage* (nominal ) Pickup (close), max. Hold, Min. Dropout (open), min. Current (@VsNom/ 25oC) Inrush Holding, standby, Inrush Time, max. 2.8 0.34 200 1.8 0.11 200 A ms EV250-2A EV250-2B Units 12 9 7 5 24 18 14 10 A 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, 25o C ............................................................. Close (includes bounce) Typ. ...................................... Bounce (after close only), Max. .................................. Release Time (includes arcing), Max. @ 2500A ........ 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 18 5 15 100 1.76 (0.8)
* 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
C
PART NUMBER SELECTION
Sample Part No. EV250-2 A Model 2 = with blowout magnets 8 = without blowout magnets 7 = 10" flying leads (12 V, with magnets only) Coil Voltage A = 12 Vdc, Nominal B = 24 Vdc, Nominal
cycles ms ms ms Mohm pound (kg)
* Refer to sales drawing, qualification test plan for actual mix of precharge and break currents used on each cycle.
For detailed specifications and recommendations, refer to the EV250-2A & B or 7A sales drawings.
17
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)
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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