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Resistors Construction:
The resistive element is a low ppm resistance wire that is wound on a
special grade porcelain tube. The terminals have fully welded
construction to provide a good mechanical and electrical contact. The
assembly is embedded in the aluminum casing. The aluminum casing is made
from high quality heat sink grade material, which helps to dissipate
the heat from the resistor at the faster rate resulting low change of
resistance with respect to temperature, as resistance varies in direct
proportion to temperature. The casing is filled with high purity and
special silica sand to extract the heat from the resistor body at the
slower rate. The conduction of heat thorough the sand brings uniform
heat to the aluminum casing for further dissipation. This protects the
panels from being heated internally. Terminal contacts are provided with
the screw arrangement for easy wiring.
Application Information:
motors with a dynamic load that requires to be stopped quickly, such as
lifts, cranes, or high-speed mechanisms. The braking resistor is
connected in the DC link, between the rectifiers and the switching
semi-conductors. When the DC voltage rises, to a pre selected limit, a
chopper circuit switches in the braking resistor thereby allowing excess
energy to be "dumped" in the form of heat, instead of causing damage to
the inverter. When the DC level drops to a lower preset minimum limit.
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WATTAGE
|
DIMENSIONS(MM)
|
APPROX
WEIGHT (g)
|
|
L1
|
L2
|
W
|
H
|
D
|
|
60
|
115
|
100
|
40
|
20
|
4.0
|
110
|
|
80
|
140
|
125
|
40
|
20
|
4.0
|
160
|
|
100
|
165
|
150
|
40
|
20
|
4.0
|
200
|
|
120
|
190
|
175
|
40
|
20
|
4.0
|
240
|
|
150
|
215
|
200
|
40
|
20
|
4.0
|
290
|
|
200
|
165
|
150
|
60
|
30
|
5.3
|
460
|
|
300
|
125
|
200
|
60
|
30
|
5.3
|
750
|
|
400
|
255
|
250
|
60
|
30
|
5.3
|
930
|
|
500
|
330
|
315
|
60
|
30
|
5.3
|
1100
|
|
750
|
330
|
315
|
60
|
30
|
5.3
|
2000
|
|
1000
|
415
|
400
|
80
|
40
|
5.3
|
2800
|
|
1200
|
480
|
465
|
80
|
40
|
5.3
|
|
|
1500
|
480
|
|
|
|
|
|
|
2000
|
550
|
|
|
|
|
|
|
Wattage Rating
|
Resistance rage (Ω)
|
|
Std type
|
Non-inductive type
|
|
60
|
0.05 Ω-5kΩ
|
0.1 Ω-2.5kΩ
|
|
80
|
0.08 Ω-6kΩ
|
0.2 Ω-3k Ω
|
|
100
|
0.1 Ω-8kΩ
|
0.2 Ω-4k Ω
|
|
120
|
0.1 Ω-10kΩ
|
0.2 Ω-5k Ω
|
|
150
|
0.1 Ω-12kΩ
|
0.2 Ω-6kΩ
|
|
200
|
0.1 Ω-15kΩ
|
0.2 Ω-7k Ω
|
|
300
|
0.2 Ω-18k Ω
|
0.5 Ω-8kΩ
|
|
400
|
0.2 Ω-20k Ω
|
0.5 Ω-10k Ω
|
|
500
|
0.3 Ω-25kΩ
|
0.5 Ω-12k Ω
|
|
750
|
0.4 Ω-25k Ω
|
0.4 Ω-13k Ω
|
|
1000
|
0.5 Ω-30kΩ
|
1 Ω-15k Ω
|
FEATURES
- Low Price Small Size
- High power & excellent load life stability
- Excellent short time over load.
- Strongly resistant to moisture, solvent & insulation.
- Flame Proof cement High Grade insulation.
- Self -extinguish material is used in mounting
- Non- inductive type also available
- High-surge -resistant items are also available.
On Heat Sink 60W- 1000W
Free Air 100W -150W.
Free Air 200W-300W
Free Air 400W-500W
Free Air 700W-1000W
|
Wattage
|
Heat Sink Size
|
|
60W-150W
|
200x200x3mm
|
|
200W-500W
|
300x300x3mm
|
|
700W-1000W
|
450x450x3mm
|
Technical Specifications
- Only Nichron wires used designed at 800oC
- Operating temp:- 55oC+275oC
- Insulating Resistance:-20MΩ MIN
- Temp. Coefficient:- 100 ppm/oC
- Short Time Over load:- 5 X wattage Rating , 5 sec � R+ (2%+0.05Ω)MAX
- Moisture resistant:- Temp 40oC moisture 95% DC 100v500h� R+ (2% +0.05Ω)MAX
- Thermal Shock:- Wattage Rating 30 min ,25oC ,15mn � R+ (2% +0.05Ω)MAX
- Vibration:- 10c/c-50c/s-10c/s (1min)-2h each of paraileled & right angle � R+(1% +0.05Ω)MAX
- Moisture Load Life:- 40oC ,90% RH,1/10 X Wattage Rating,1.5h ON,30 min OFF, 100h� R+(3% +0.05Ω)MAX
- Load Life:- Wattage Rating 1.5h on , 30 min off , 1000� R+ (3% +0.05Ω) MAX
- Derate to zero:- at 275oC
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