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3300pF@10 KV Doorknob Capacitors.Brand New. Lot of 2
3300pF@10 KV Doorknob Capacitors.Brand New. Lot of 2
$19.50
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HIGH VOLTAGE CAPACITOR 100uF/3000 Volts. 4500V Peak
[K75-40a]
$149.50

HIGH VOLTAGE Power pulse CAPACITOR 100uF/3000 Volt




 
 
 
High-Voltage 100uF/3000V 
 Big Power capacitor.
Not old stock. Brand New from factory ! 
 
The powerful High-Voltage K75-40 Russians capacitors they are made with use the modern material for internal insulator: POLYETHYLENE-TEREFTALAT. 

FEATURES:
? High impulse current rating up to 3.0 kA
? Low self-inductance of < 30 nH
? High reliability and life expectancy
? Withstands heavy duty shock and vibration
? Non-polar dielectric - Dry, resin filled
 
 
It is much better than old types oil capacitors. Oil capacitors can boil, dry up and stream. These capacitors never! They are very trusty and stable. This series K75-40a designed in the USSR for impulse discharge capacitors use in special radar stations more 3GW Power in pulse. Now it is applied as the energy storage in pulsing lasers. These capacitors are not inductive rather the big inductance of oil caps. These capacitors have small absorption of electrons and have in each impulse discharge of 100% of capacity rather 30-40% in any oil and 10-15% the pulse discharge in electrolityc capacitors. These pulse capacitors have small interior resistance and therefore very big current of the discharge in an impulse. This current in the hundreds times more a current of the discharge old oil capacitors!
 
 
 This quality is perfect also for use in the High Voltage Power Supply. It reduces pulsations is similar 300-450uF old oil capacitor! It is enough for use with anode current up to 5,0 amperes in one phase (with 2,5kV to 10 kW) or up to 25,0 amperes in 3 phase (with 2,5 kV to 55 kW) anode Power Supply. The best choice for pulsing loadings (CW and SSB big power high-linear amplifiers). These capacitors have no throws voltage and supplies of any front impulse of a anode current.
 
The Manufacturer parameters:
 
POLARITY: Any DC or AC
CAPACITY: 100 uF  +/-10%
TEST Voltage: 5000 VDC
Peak Voltage: 4500 VDC
MAX. WORKING Voltage: 3000 VDC
Discharge current amplitude:up to 3000 Ampers !
Dissipation factor at f=50Hz: <0,006 !
Time constant: >2000 MOhm.uF
Insulation resistance: >12000 MOhm
Maintains mechanical actions: 
Vibration 1-2000Hz with acceleration: up to 10 G
Nonsingle shocks with acceleration: up to 40 G
Single shocks with acceleration: up to 500 G
Temperature of work: -60* +120*C (-76 to 248 F)
Atmospheric pressure of work: 0,00012 to 294 000,0 Pa
Dimensions: 105x170x150 mm (4,1x6,7x5,9 in)
Weight: 4.5 kg (9,9 lb)
Operating Position -Any
Material of electrodes: Composite of metals witch a special film coats
Material of insulator between electrodes: polyethylene-tereftalate
 
*********************************************
 
We have made HI-POT test this capacitor:
We charged the capacitor up to 3000V with 50uA current, no problems and we got 4.6uA leak current at 3000V. Next step was to charge it to 4000V, with 50uA current, no problems and we got 5.8uA leak current at 4000V.    Absolutely safe for 4000VDc without any limited!
  We increased the voltage to 4500V and got 46uA leak current. At 4500VDc the self-discharge is still very small (46uA -> 0.05mA) but not recommend for 4500VDc long term use.
 
 
These capacitors have electrodes made of composite materials. Therefore for prevent the galvanic damage at the long-time storage, the electrodes of these capacitors is not short. Accumulation of static potentials is possible. This is necessary discharging before use!
 
Buyer agrees that buyer understands HV Caps are dangerous
and that buyer states buyer is knowledgable in their safe use.
By bidding, buyer agrees to assume all liability for use of this item.
----------------------------------------------------------------------------------------------------------------------------
  
This sale is for  ONE K75-40a  100uF/3000V High technology capacitor. Brand NEW
 
 

This product was added to our catalog on Tuesday 14 August, 2007.
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