28-1800 Vdc Features:
Kilovac EV250-2A & 2B - 400 Amps ("Czonka II EVX")
Make & Break Load Switching
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
CONTACT RATINGS*
400A
1 0 0 ,0 0 0
9 0 0 0A
M o m en t a ry C a rry
R eg i o n
1 0 ,0 0 0
dc
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
dc
dc
1 ,0 0 0
6
0
V
c
0V
d
dc
90
c
dc
Vd
0V
00
1 0 0
27
0
18
L ife C y c le s
0V
V
0V
28
12
40
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)
1 0
1
1
1 0
1 0 0
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
COIL DATA**
EV250-2B
Parameter
EV250-2A EV250-2B Units
Contact Arrangement ..........................................................
SPST-NO
SPST-NO
Voltage* (nominal )
12
24
Contact Form ........................................................................
X
X
Pickup (close), max.
9
18
Vdc
Continuous Current Carry, Max. ........................................
A
400
400
Hold, Min.
7
14
6.5 Minutes ....................................................................
A
500
500
Dropout (open), min.
Break Current @ 320 Vdc ...................................................
5
10
A
2,500
2,500
Contact Resistance, Max. ...................................................
Current (@VsNom/ 25oC)
ohms
0.0003
0.0003
Contact Resistance, Typ. ....................................................
Inrush
2.8
1.8
ohms
0.0001 - 0.0002
0.0001 - 0.0002
Dielectric at Sea Level (leakage < 1mA) ............................
Holding, standby,
Vrms
2,200
2,200
0.34
0.11
A
Shock, 11 ms 1/2 Sine (peak), operating .........................
G's peak
30
30
Inrush Time, max.
200
200
ms
Vibration, Sinusoidal (80-2000 Hz, peak) .........................
G's
20
20
Operating Ambient Temperature Range ............................
o
C
-40 to +85
-40 to +85
cycles
See Page 19
See Page 19
Close (includes bounce) Typ. ......................................
ms
18
18
Bounce (after close only), Max. ..................................
ms
5
5
Release Time (includes arcing), Max. @ 2500A ........
ms
15
15
Load Life, @ 320 Vdc. 95% Weibull* ................................
Operate Time, 25o C .............................................................
Insulation Resistance @ 500 Vdc, Min. ............................
Mohm
100
100
Weight, Nominal ..................................................................
pound (kg)
1.76 (0.8)
1.76 (0.8)
* Refer to sales drawing, qualification test plan for actual mix of precharge and break currents used on each cycle.
17
A
* 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
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
For detailed specifications and recommendations, refer to the EV250-2A & B or 7A 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)
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
Features:
2 00
1 50
1 00
50
0
0
1
2
3
4
5
6
7
8
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
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
Cycles
100,000
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
19
CII Technologies / P.O. Box 4422 / Santa Barbara, CA 93140 / ph 805.684.4560 / fax 805.684.9679 / e-mail [email protected] / website www.ciitech.com