Features:
Features:
16
Kilovac EV250-1A & 1B - 400 Amps ("Czonka II EVX")
Make & Break Load Switching
PRODUCT SPECIFICATIONS COIL DATA***
CONTACT RATINGS*
* 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.
? 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
and low power comsumption
? 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
28-1800 Vdc
Sample Part No. EV250-1 A
Coil Voltage
A = 12 Vdc, Nominal
B = 24 Vdc, Nominal
PART NUMBER SELECTION
For detailed specifications and recommendations,
refer to the EV250-1A & B sales drawings.
Parameter
Voltage* (nominal )
Pickup (close), max.
Continuous Hold, max/min **
Dropout (open), min.
Coil Resistance
@ 25oC, +/- 10%
Coil Energy, max.
Coil Clamping
Units
Vdc
Ohms
J
EV250-1A
12
8.3
5.1/3.8
0.88 - 3.3
3
0.2
3 x nom.
EV250-1B
24
16.6
10.2/7.6
2.4 - 6.6
12
0.2
3 x nom.
* Refer to Page 19 for actual mix of precharge and break currents used on each cycle.
* 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.
1
1 0
1 0 0
1 ,0 0 0
1 0 ,0 0 0
1 0 0 ,0 0 0
1 1 0 1 0 0 1 ,0 0 0 1 0 ,0 0 0 1 0 0 ,0 0 0
28Vdc
Life C ycles
Switching C urrent
270Vdc
400Vdc
600Vdc
900Vdc
1800Vdc
R eg io n o f
C ontact
Levitation .
O peration
P ro h ibited
Mom en ta ry C arry
R eg io n
400A 9000A
120Vdc
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, 25oC ..............................................................
Close (includes bounce) Typ. ......................................
Bounce (after close only), Max. ..................................
Open (includes arcing), Max. ......................................
Insulation Resistance @ 500 Vdc, Min. ............................
Weight, Nominal ..................................................................
oo
UNIT EV250-1A EV250-1B
SPST-NO SPST-NO
X X
A 400 400
A 500 500
A 2,500 2,500
ohms 0.0003 0.0003
ohms 0.0001 - 0.0002 0.0001 - 0.0002
Vrms 2,200 2,200
G's Peak 30 30
G's 20 20
C -40 to +85 -40 to +85
cycles See Page 19 See Page 19
ms 30 30
ms 5 5
ms 15 15
Mohm 100 100
pound (kg) 1.54 (0.7) 1.54 (0.7)
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)
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Features:
Features:
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
LIFE RATINGS AND QUALIFICATION TEST PLAN
Normal Operations 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
% P re 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 g iven number of consecutive and cumulative
cycles under both normal and abnormal conditions in a variety of load switching applications. The life
rating o f 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
0 1 2 3 4 5 6 7 8
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. = 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
Mechanical Life Cycles 100,000
