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ALUMINIUM HOUSED POWER WIREWOUND RESISTORS
s
s
s
s
s
s
HS
S E R I E S
FEATURES
DESIGNED FOR HEAT SINK MOUNTING
LOW OHMIC VALUES DOWN TO R005
SOLDER, CABLE, THREADED OR FAST-ON
TERMINATIONS
INDUCTIVE OR LOW INDUCTANCE
MANUFACTURING APPROVED TO ISO 9001
The ARCOL HS style is a range of high quality, high
stability aluminium housed power wirewound resistors
designed for direct heat sink attachment. The resistive
element is wound onto high thermal conductivity
ceramic formers ground to a close tolerance finish
ensuring maximum contact for rapid heat transfer. This
element is encapsulated in the aluminium housing by a
transfer moulding process which ensures a good
humidity seal and a permanent compression fit. The
encapsulant is a high temperature moulding compound
and the special ARCOL mould tool design ensures
accurate concentricity of the resistive element inside
the housing giving a high level of voltage protection.
Our engineers have 30 years experience in the design
and manufacture of this style of resistor and during this
period we have produced many different HS types to
meet customers special requirements. If you need a
special design for your application, be it high voltage,
short term overload, special mounting or terminations
then please contact us for advice.
CHARACTERISTICS
Standard J (± 5%) and K (± 10%). Also available F (± 1%), G (± 2%) and H (± 3%).
Tolerance
Typically
³
R05 ±5%
²
R047 ±10%.
Tolerance for low
½
values
< 1K 100ppm Std. > 1K 25ppm Std. For lower TCR’s please contact Arcol.
Temperature Coefficients typical values
10,000 M½ minimum.
Insulation resistance (Dry)
Power dissipation @ high ambient temperatures
Dissipation derates linearly to zero at 200 °C.
From R005 to 100K depending on wattage style.
Ohmic values
Specify by adding N before HS code e.g. NHS50.
Low inductive (NHS)
Divide standard HS maximum value by 4.
NHS ohmic range
Divide standard HS maximum working volts by 1.414.
NHS working volts
Available on request.
Internal resistance
Ceramic-steatite or alumina depending on size.
Core
Copper nickel alloy or nickel chrome alloy.
Element
Nickel iron or stainless steel.
End caps
High temperature moulding compound.
Encapsulant
Anodised aluminium.
Housing
HS10 to HS150: silver plated steel cored copper HS200 to HS300: Brass, stainless steel or copper clad steel.
Terminals
ORDERING SYSTEM
T E M P E R AT U R E R I S E & P O W E R D I S S I PAT I O N
N
LOW
INDUCTION
WINDING
H
S
2
5
2
R
NOMIMNAL
VALUE (½)
2
J
TOLERANCE
SERIES
WATTS (MAX)
HEAT SINK
MOUNTED
Surface Temperature of resistor related to power dissipation. The resistor
is standard heat sink mounted using a proprietary heat sink compound.
200
HS300
TOLERANCE CODE
F = ± 1%
J = ± 5%
K = ± 10%
S U R FAC E T E M P E R AT U R E R I S E (
°C
)
HS50
HS150
HS200
HS250
ARCOL will be pleased to advise and to provide further information on
the following subjects:
s
HS resistors for pulse applications
s
Maximum overload
s
Inductance values
s
Low ohmic values
s
Special terminations
s
Alternative aluminium housing designs and mountings
s
Voltage applications
HS25
100
HS15
HS10
HS75
HS100
5
0
20
50
75
100
150
200
250
300
P O W E R D I S S I PAT I O N ( WAT T S )
THREEMILESTONE INDUSTRIAL ESTATE, TRURO, CORNWALL, TR4 9LG, ENGLAND. Tel +44 (0)1872 277431, Fax +44 (0)1872 222002 http://www.arcol.co.uk E-mail sales@arcol.co.uk
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ALUMINIUM HOUSED POWER WIREWOUND RESISTORS
H E AT D I S S I PAT I O N A N D M A X I M U M O V E R L OA D
HS
S E R I E S
HEAT DISSIPATION
Whilst the use of proprietary heat sinks with
lower thermal resistance is acceptable, uprating is not recommended.
For maximum heat transfer it is recommended that a heat sink
compound be applied between the resistor base and heat sink/chassis
mounting surface. It is essential that the maximum hot spot
temperature of 200°C is not exceeded and therefore the resistor must
be mounted on a heat sink of correct thermal resistance for the power
being dissipated.
MAXIMUM OVERLOAD
Please consult the factory for assistance
concerning your particular overload application.
ELECTRICAL SPECIFICATIONS
ARCOL
TYPE
STYLE
MIL-R
18546
RE60
RE65
RE70
RE75
POWER RATING
ON STANDARD
HEAT SINK
@ 25˚C
10
15
25
50
75
100
150
200
250
300
WATTS
@ 25˚C
WITHOUT
HEAT SINK
5.5
8
12.5
20
45
50
55
50
60
75
RESISTANCE
RANGE
OHMS
R005-10K
R005-10K
R005-36K
R01-86K
R01-50K
R01-70K
R01-100K
R01-50K
R01-50K
R01-68K
LIMITING
ELEMENT
VOLTAGE
DC/AC RMS
160
265
550
1250
1400
1900
2500
1900
2200
2500
VOLTAGE
PROOF
AC PEAK
1400
1400
3500
3500
6363
6363
6363
7070
7070
7070
VOLTAGE
PROOF
AC RMS
1000
1000
2500
2500
4500
4500
4500
5000
5000
5000
APPROX
WEIGHT
GMS
4
7
14
32
85
115
175
475
600
700
TYPICAL SURFACE
STANDARD HEAT SINK
TEMPERATURE RISE
(ALUMINIUM)
˚C/W STANDARD HEAT
SINK MOUNTED
AREA CM
2
THICKNESS (MM)
5.8
5.1
4.2
3.0
1.1
1.0
1.0
0.7
0.6
0.6
415
415
535
535
995
995
995
3750
4765
5780
1
1
1
1
3
3
3
3
3
3
HS10
HS15
HS25
HS50
HS75
HS100
HS150
HS200
HS250
HS300
DIMENSIONS
Centre hole in
each flange is in
150 Watts only
L
2.1
±
0.1
HS 10, 15,25, 50
Ø 2.0
±
0.25
J
3.0
±
0.1
G A
Ø 3.2
max.
L
J
6mm
L
J
HS 75, 100, 150
G A
HS 200, 250, 300
G A
*
=
F
E
B
F
E
B
=
=
F
E
M
B
=
D
D
D
C
H
K
C
H
K
C
H
K
ARCOL
TYPE
HS10
HS15
HS25
HS50
HS75
HS100
HS150
HS200
HS250
HS300
A
MAX
16.5
21.0
28.0
29.7
47.5
47.5
47.5
72.5
72.5
72.5
B
MAX
30.0
36.5
51.0
72.5
72.0
88.0
121.0
145.7
167.0
184.4
C
MAX
8.8
11.0
14.6
14.8
24.1
24.1
24.1
41.8
41.8
41.8
D
MAX
8.5
11.2
14.0
14.2
27.3
27.3
27.3
45.5
45.5
45.5
E
MAX
15.9
19.9
27.3
49.1
48.7
65.2
97.7
89.7
108.7
127.7
DIMENSIONS (MM)
G ± 0.3
F ± 0.3
11.3
14.3
18.3
39.7
29.0
35.0
58.0
70.0
89.0
104.0
12.4
15.9
19.8
21.4
37.0
37.0
37.0
57.2
57.2
59.0
H
MAX
J
MAX
K
MAX
1.8
1.8
2.6
2.6
3.7
3.7
3.7
5.5
5.5
5.5
L ± 0.25*
2.4
2.4
3.2
3.2
4.4
4.4
4.4
5.1
5.1
6.6
M
MAX
---
---
---
---
---
---
---
103.4
122.4
141.4
4.5
5.5
7.3
8.5
11.8
11.8
11.8
20.5
20.5
20.5
2.4
2.8
4.7
5.2
10.4
15.4
20.4
10.4
10.4
12.4
*200 - 300 Watts is ± 0.45
THREEMILESTONE INDUSTRIAL ESTATE, TRURO, CORNWALL, TR4 9LG, ENGLAND.
Tel +44 (0)1872 277431 Fax +44 (0)1872 222002
http://www.arcol.co.uk E-mail sales@arcol.co.uk
CERTIFICATE NUMBER FM31218
The information contained herein does not form part of a contract and is subject to change without notice. It is the responsibility of the customer to ensure that the component selected from our range is suitable for the intended application.
If in doubt please ask us.
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