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參數(shù)資料
| 型號： | 3R-250 |
| 廠商： | Willow Technologies Limited |
| 英文描述： | 250Watt Mountable Non-Inductive, High Frequency Resistors |
| 中文描述： | 250Watt掛墻無感，高頻電阻 |
| 文件頁數(shù)： | 1/1頁 |
| 文件大?。?/td> | 833K |
| 代理商： | 3R-250 |
3R-250
250Watt Mountable Non-Inductive,
High Frequency Resistors
·Heat Sink Mountable
with M4 Screw
·RF Terminal
·Shunt
·Inverter
·Moter Braking
·Pulse & Plasma
3R-250Non-Inductivedesigntheseelementsareideallysuitesforhighfrequencyandpulseloadapplications.Bydirect
mountingonaheatsinksignificantcostadvantagescanbereailzedforpowerAppliationfrom100wto600w.3R-250can
besuppliedina2-terminalMainapplicationsareVariablespeedDrives,ship,train,RFTermination,PowerSupplies,Control
Devices,Telecom,Robotics,MotorControlsDynamicBraking,andotherswitchingdesigns.
Motor Controls, High Energy, RF, High Voltage, Inverters, Pulse & Plasma,
Non-Inductive Powers
3R-250 Non-Inductive 250Watt
Mountable, High Frequency Resistors
S
PECIFICATIONS
D
ERATING CURVE
R
25
50
75
00
25
50
75
00
80
60
40
20
0
Tap Temperature (C)
Resistance Values :
1R0 to 2Megohm others on
rquest
Resistance Tolerance :
± 10% Std. ,1%,2%,5%
available on request.
Temperature Coefficient :
± 100ppm/°C typ.
(others upon request)
Maximum Working Voltage :
5,000V DC, higher
voltage on request, not execeeding max. power
Single Shot Voltage :
Up to 12kV at std. wave
(1.5/50
)
Insulation Resistance :
10G
min. at 500V
Creeping Distance :
42mm min.
Inductance :
≤50 nH
Capacity/Ground :
≤110pF
Capacity/Resistive :
≤40pF
Operation Temperature :
-55°C to +155°C
Max. Torque for Contacts :
2 N.m
Max. Torque for Mounting :
1.8 N.m
Power Rating :
250W at 50°C Tap Temperature
Higher power :
600Watt at 5°C Tap Temperature
Dielectric Strength :
Up to 12 kV
Termination to Contacts :
M5 Screws
Required thermal transfer compound of-heat
conductivity :
1 W/°C
Required flatness of heat sink :
≤ 0.05mm
Roughness of the Heatsink surface :
≤ 6.4
.
Isolation Voltage(Terminal to Heatsink) :
7k Vrms
cf.: The described specifications & dimensions subject to change without notice.
D
IEMENSION
Willow Technologies Ltd.
Shawlands Court, Newchapel Road, Lingfield, Surrey, RH7 6BL, United Kingdom.
+ 44 (0) 1342 835234
+ 44 (0) 1342 834306
info@willow.co.uk http://www.willow.co.uk
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