Tel :
+ 44 (0) 1883 717988
Fax :
+44 (0) 1883 712938
/
/
/
/
Website :
http://www.rhopointcomponents.com
Email:
sales@rhopointcomponents.com
ULV/ULH TYPE (UL
Approved)
The ULV(V=vertical & ULH(H=horizontal) models are UL approved metal-clad, wire-wound high-power resistors designed for
industrial and other applications. Our extruded aluminium housing provides rugged and strong protection. These models are
available with flying leads or Tab terminals and can be ordered with inductive or non-inductive windings. To conform to UL
safety requirements, ULV/ULH models differ from IRV/IRH models in that: The resistance range is smaller, the flying leads
are UL approved and the dielectric strength depends on the ohmic value.
GENERAL SPECIFICATIONS
Resistance Range [ohms]
Inductive
Non-
Inductive
Model
Wattage
Rating
on
Heat Sink
Tab
terminals
Flying
leads
Tab
terminals
Flying
leads
Resistance
Tolerance
ULH/ULV60
60 0.1-375 0.1-400
0.1-180
0.1-180
ULH/ULV80
80
0.1-281
0.1-910
0.1-110
0.1-110
ULH/ULV100
100 0.1-225 0.1-1.1K
0.1-225
0.1-240
ULH/ULV120
120
0.1-187
0.1-1.3K
0.1-187
0.1-300
ULH/ULV150
150 0.1-150 0.1-1.6K
0.1-150
0.1-390
ULH/ULV200
200
0.1-450
0.1-2.2K
0.1-450
0.1-1K
ULH/ULV300
300 0.1-300
0.1-2.7K
0.1-300
0.1-1.5K
ULH/ULV400
400
0.1-225
0.1-4.3K
0.1-225
0.1-2.2K
ULH/ULV500
500 0.1-180
0.1-6.8K
0.1-180
0.1-3K
+-2.0(G)
+-5.0(J)
+-10(K)
CHARACTERISTICS
Values in [ ] mean change in ohms after test
Temperature Range
-55C to 200C
Insulation Resistance
20M ohms minimum
Dielectric Strength
[1000V+(rated voltage2)] / min.
Temp. Coefficient
+-260ppm/C maximum
Short Time Overload
+-[2%+0.05ohms] 60W:5Xwattage rating-5second, 80to500W: 10Xwattage rating-5seconds
Moisture Resistance
+-[3%+0.05 ohms] 40C, 95% RH, DC100V case to terminal (500hrs.)
Thermal Shock
+-[2%+0.05 ohms] wattage rating 30min., -25C, 15minutes
Vibration
+-[1%+0.05 ohms] 10Hz-55Hz-10Hz (1min.),2hrs. each direction
Moisture Load Life
+-[3%+0.05 ohms] 40C,95%RH,0.1Xwattage rating, 1.5h.on,30min.off,500 hours
Load Life
+-[5%+0.05 ohms] Wattage rating 1.5h. on, 30min. off, 500hours
Applied voltage : AC RMS voltage
SURFACE TEMPERATURE INCREASE VERSUS POWER LOAD
A mid-point bracket is required for 150, 300, 500W models to ensure sufficient contact with the heat sink.
Tel :
+ 44 (0) 1883 717988
Fax :
+44 (0) 1883 712938
/
/
/
/
Website :
http://www.rhopointcomponents.com
Email:
sales@rhopointcomponents.com
ULV/ULH TYPE
DIMENSIONS IRH/IRV TYPE
Dimensions [mm]
Weight [g]
Flying Leads
UL E120271(AWM), NO.3512
Model
L1
L2
L3
W
H
D1+-
0.3
D2+-
0.3
a
b
IRH
IRV
AWG 10
AWG 14
ULH/ULV
60
100 87 60 41 22 4.3 8.65 10
12
110 113
X
ULH/ULV
80
150
137
110
41
22
4.3
8.65
10
12
195
189
X
ULH/ULV
100
165 152 125 41 22 4.3
8.65 10 12 216 215
X
ULH/ULV
120
182
169
142
41
22
4.3
8.65
10
12
245
241
X
0.10ohms & up
ULH/ULV
150
210 197 170 41 22 4.3
8.65 10 12 283 290
X
0.11ohms
&
up
ULH/ULV
200
165
146
125
60
30
5.3
12
13
17
485
447
0.1ohms -
0.15ohms
0.16ohms & up
ULH/ULV
300
215 196 175 60 30 5.3
12 13 17 600 600
0.1ohms -
0.22ohms
0.23ohms & up
ULH/ULV
400
265
246
225
60
30
5.3
12
13
17
770
780
0.1ohms -
0.30ohms
0.31ohms & up
ULH/ULV
500
335 316 295 60 30 5.3
12 13 17 990 980
0.1ohms -
0.37ohms
0.38ohms & up
kY
DERATING CURVE AND ORDERING PROCEDURE EXAMPLE
ULV120 N FL XXXX 5ohms J
Model For Flying Resis- Toler-
# Non- Lead tance ance
Inductive [mm]
If you require flying leads please add `FL' +
length in mm next to the model number. Also
include an "N" if non-inductive is required.
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