OPEN WOUND SEMI ADJUSTABLE POWER WIREWOUND RESISTORS HD 300/3DATA SHEET
SERIES
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
Page 1 of 2
POWER RATING 200 - 750 WATTS
7 WATTAGE SIZES
HIGH SHORT TERM OVERLOAD CAPACITY
FEATURES
â–
â–
â–
â–
â–
HIGH ELEMENT WEIGHT FOR VALUE
GOOD STABILITY AT HIGH OPERATING TEMPERATURES
CHARACTERISTICS
Tolerance
Temperature coefficients typical values
Power dissipation @ 25°C
Ratings
Core
Element
Terminals
Marking
Standard K (
±
10%).Also available J (
±
5%). Please consult ARCOL on closer tolerances.
Typically less than 100ppm/°C.
200 watts to 750 watts.
Electrical porcelain.
Oxidised copper nickel alloy (iron free).
Nickel silver.
Resistance value marked on mounting feet.
Ratings are given for units mounted vertically in free air in an ambient temperature of 20°C; the
temperature rise on the surface of the tube under these conditions will be approximately 350°C.
ELECTRICAL SPECIFICATIONS
ARCOL
TYPE
HD200
HD300
HD400
HD450
HD500
HD600
HD750
MIN MAX
POWER
RATING
@ 25ËšC
200
300
400
450
500
600
750
RESISTANCE
RANGE OHMS
R49
R71
R93
1R16
1R18
1R5
1R8
800R
1K2
1K66
2K06
2K09
2K62
3K15
STABILITY
â–²R %
PER 1000
HRS
3
3
3
3
3
3
3
APPROX
WEIGHT
GMS
435
555
725
925
920
1130
1240
TYPICAL
SURFACE
TEMP. RISE
ËšC/W
1.62
1.08
0.82
0.73
0.65
0.55
0.44
ORDERING SYSTEM
TOLERANCE
K
MOUNTING
STYLE
H
ADJUSTABLE
BAND
L
SERIES
H D
WATTS (MAX) HEAT
SINK MOUNTED
3 0 0
NOMIMNAL
VALUE (Ω)
2 R 2
TOLERANCE CODE J = ±5% K = ±10%
HDSERIES
OPEN WOUND SEMI ADJUSTABLE POWER WIREWOUND RESISTORS
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
Page 2 of 2
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.
DIMENSIONS
ADJUSTABLE BANDS
ARCOL TYPE
HD200
HD300
HD400
HD450
HD500
HD600
HD750
B MAX
9.50
9.50
9.50
9.50
9.50
9.50
9.50
DIMENSIONS (MM)
K
H
M
L
N
B
CD
E
J
TYPE L (Adjustable) When an occasional adjustment is required,
this type of band is most suitable since it is vibration-proof and only
requires access to one side of the band to make an adjustment.The
band is loosened by slackening the locknut with a box spanner.
TYPE S (Fixed) This band is most suitable for units which will have
the adjustable band pre-set once and will nor require further
adjustment.To make an adjustment,it is necessary to have access
to both sides of the band.The band is loosened by slackening the
screw whilst the locknut ensures that this screw will not work loose
by vibration once the band has been set to the desired value.
C MAX
22.00
22.00
22.00
22.00
22.00
22.00
22.00
D MAX
3.00
3.00
3.00
3.00
3.00
3.00
3.00
E MAX
41.00
41.00
41.00
41.00
47.50
47.50
47.50
H MAX
68.00
68.00
68.00
68.00
101.50
101.50
101.50
J MAX
25.00
25.00
25.00
25.00
25.50
25.50
25.50
K MAX
41.00
41.00
41.00
41.00
51.00
51.00
51.00
L MAX
155.00
209.00
259.00
311.00
259.00
311.00
362.00
M MAX
173.40
226.40
275.40
326.40
281.70
332.70
382.70
N MAX
6.50
6.50
6.50
6.50
6.40
6.40
6.40
CERTIFICATE NUMBER FM31218
