EcoPlasma 900  
   
   
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Technical Specification of High Voltage Power Supply for 1.5KW Magnetron Application
Power switch transistor temperature rising: 35°C
Ambient temperature: -20°C~+50°C
Maximum Magnetic Core Temperature Rising: 65°C (environment temperature 25°C with air cooling)
Output DC voltage: 3000V-4300V the tunable current range: 50 mA --300 mA
Control voltage input range: 0V-2.5V (analog control)
Output DC current temperature drift: ±1% 24h
Efficiency: > 93.5% @ AC190V/AC280V, 4 hours from power on
High voltage output feature: continuous short circuit discharge is allowed for high voltage output and restart immediately
Type of cooling: forced air cooling
Over temperature protection: power switch transistor and rectifier temperature > 80°C
Rated Power: 1500W
referred to the output microwave power of magnetron: 1000W- 1100W (determined by
the spread of magnetron)
High voltage soft rising time: 10 s
AC input range: AC start-up voltage 160V the voltage range for normal operation: 190V-285V
AC restart time after power down: 20 s
Over voltage protection: >AC300V
lifespan: 30,000h
Power factor: > 0.90
Size of power supply: 106 x 130 x 290mm
 
Filament Power Supply
Switching mode power supply:35W 3.3 V/10A ,with efficiency 72%
Current soft rising time: 5s initial current: 2.0 A linearly rise to rated value
Voltage range: AC160V-300V
The high voltage generator will stop working if filament is broken
Constant current range: 6-12A constant current accuracy: 2% 24h
the typical current value at thermal equilibrium state of magnetron: 6.0A-7.0A
Current will be held at 12A if filament is shorted
 

The following chart shows the relationship between control voltage and HV current (mA)

mA Value Sheet
Outside
voltage
(V)
Output
current
(mA)
Output
voltage
(V0)
Input power
(W in)
Notes
2.50
270
4000
1273
maximum
value
2.25
270
4000
1257
2.00
258
3950
1192
1.75
235
3920
1086
1.50
213
3880
978
1.25
191
3850
880
1.00
160
3800
745
0.75
124
3770
596
0.50
80
3700
416
0.25
43
3240
244
off
0
13
3150
139
 
Test condition: AC220V
Notes: the efficiency of magnetron high voltage power supply: > 97.5% power switch transistor temperature rises 20°C
Quality assurance: warranty during first year
     
         
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