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CTR High Voltage - High Power - High Energy
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FEATURES
Series 800 and 1000 Ceramic Tubular Resistors(CTR) are available in a wide
variety
of sizes and terminations from 2" to 24" in length and ½" to 2 " in
diameter. These
resistors can handle up to 1000 watts, 165 KJ and 165 KV in resistance
values from
1 ohm to 1 megaohm.
APPLICATIONS
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Type SP - Motor drive circuits - Snubber circuits - High-frequency circuits - RF dummy loads - Dynamic braking - Transformer Protection - Harmonic filter |
Type AS - Impulse generators - High-voltage circuits - X-ray equipment - High voltage power supplies - Laser/Imaging equipment - Capacitor charge/discharge
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Type A - Bleeder - Capacitor charge/discharge … just to name a few uses
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CHARACTERISTICS
| Characteristics | Type SP | Type AS | Type A | |
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Maximum operating |
-55°C to +350°C | -55°C to +230°C | -55°C to +230°C | |
| Temperature coefficient(%) |
+0.2 to |
+0.0 to |
+0.0 to |
percent per °C, -55°C to maximum rated temperature |
| Voltage coefficient | -1.0% | -1.0% | - |
Maximum percent per kilovolt per inch active length |
| Short time overload | ± 5% | ± 2% | - |
maximum percent change after 5 cycles |
| Load Life | ± 5% | ± 5% | - | Max. % change after 1000hours at rated power |
| Thermal Shock | ± 3% | ± 3% | - | |
| Moisture resistance | ± 5% | ± 5% | ± 5% |
maximum percent change |
** Note : When required, Type SP material can withstand short periods of use at red-heat conditions, i.e. up to 550C to 600℃C
ORDERING PROCEDURE EXAMPLE
TERMINAL END OPTIONS
| SP |
No Suffix=Standard aluminum Metalized ends |
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No-arc terminal not available on SP products |
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G=Radial tab, riveted and soldered |
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| AS |
DS=Standard dielectric coating and silver metalized ends |
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N=No-arc terminal and dielectric coating |
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DG=Radial tab, riveted and soldered with dielectric coating |
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TO=Soldered end and oil resistant coating |
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| A |
No Suffix=Standard nickel metalized ends |
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D=Dielectric coating |
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N=No-arc terminal and dielectric coating |
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DG=Radial tab, riveted and soldered with dielectric coating |
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TO=Soldered end and oil resistant coating |
DIMENSIONS - Inches (Millimeter)
| Type | A | B | C (SP & AS) | C (A) | D |
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884SP 885 SP, AS & A 886 SP, AS & A |
2.0(50.8) 2.5(63.5) 5.0(127) |
0.50(12.7) 0.75(19.05) 0.75(19.05) |
0.22(5.58) 0.50(12.7) 0.50(12.7) |
- 0 0 |
0.25(6.35) 0.50(12.7) 0.62(15.74) |
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887SP, AS & A 888 SP, AS & A 889 SP, AS & A |
6.0(152.4) 8.0(203.2) 12.0(304.8) |
1.00(25.4) 1.00(25.4) 1.00(25.4) |
0.75(19.05) 0.75(19.05) 0.75(19.05) |
0.5(12.7) 0.5(12.7) 0.5(12.7) |
0.50(12.7) 0.88(22.35) 0.88(22.35)
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890 SP, AS & A 891 SP 892 SP |
18.0(457.2) 18.0(457.2) 24.0(609-6) |
1.00(25.4) 2.00(50.8) 2.00(50.8) |
0.75(19.05) 1.50(38.1) 1.50(38.1) |
0.5(12.7) - -
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0.88(22.35) 1.00(25.4) 1.00(25.4) |
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1026 AS 1028 AS 1032 AS 1038 AS 1044 AS |
6.0(152.4) 8.0(203.2) 12.0(304.8) 18.0(457.2) 24.0(609.6) |
1.50(38.1) 1.50(38.1) 1.50(38.1) 1.50(38.1) 1.50(38.1) |
1.00(25.4) 1.00(25.4) 1.00(25.4) 1.00(25.4) 1.00(25.4) |
- - - - - |
0.50(12.7) 0.88(22.35) 0.88(22.35) 0.88(22.35) 0.88(22.35) |
DERATING CURVE & SURFACE TEMPERATURE RISE VERSUS POWER
Derating Curve
Power ratings are based on maximum allowable
surface temperature in still air at 40C ambient temperature.
Surface temperature rise versus Power
(Curve is Typical for Resistor Midpoint
with Horizontal Orientation in still Air)
Electrical Specifications
| Length & Diameter (inches) | Type | Resistance Available (Ohms) Min. to Max. | Average Power @ 40C (watts) | Peak* Energy (joules) | Peak* Voltage** (volts) |
| 2 x 1/2 | 884SP | 1.0-200 | 22.5 | 250 | 1,000 |
| 2-1/2 x 3/4 | 885SP | 1.0-130 | 45 | 250 | 1,000 |
| 885AS...DS | 6.0-1200 | 15 | 2,800 | 8,000 | |
| 885A | 1500-220K | 15 | 750 | 3.750 | |
| 5 x 3/4 | 886SP | 1.0-330 | 90 | 500 | 4,000 |
| 886AS..DS | 15.0-3300 | 30 | 7,500 | 20,000 | |
| 886A | 3900-390K | 30 | 1,500 | 10,000 | |
| 6 x 1 | 887SP | 1.0-330 | 150 | 1,600 | 4,000 |
| 887AS...DS | 12.0-3300 | 50 | 13,000 | 30,000 | |
| 887A | 3900-390K | 50 | 6,000 | 12,000 | |
| 6 x 1-1/2 | 1026AS..DS | 5.0-1200 | 70 | 30,000 | 30,000 |
| 8 x 1 | 888SP | 1.0-390 | 190 | 2,100 | 6,000 |
| 888AS..DS | 15.0-3900 | 75 | 16,500 | 45,000 | |
| 888A | 4700-470K | 60 | 7,500 | 15,000 | |
| 8 x 1-1/2 | 1028AS..DS | 6.5-1875 | 100 | 46,000 | 45,000 |
| 12 x 1 | 889SP | 1.0-680 | 275 | 3,200 | 10,000 |
| 889AS..DS | 25.0-6800 | 100 | 27,000 | 75,000 | |
| 889A | 8200-680K | 90 | 12,500 | 25,000 | |
| 12 x 1-1/2 | 1032AS..DS | 9.0-2500 | 150 | 75,000 | 75,000 |
| 18 x 1 | 890SP | 1.0-1000 | 375 | 4,200 | 16,000 |
| 890AS..DS | 40.0-10K | 150 | 43,000 | 120,000 | |
| 890A | 12K-1M | 125 | 20,000 | 40,000 | |
| 18 x 1-1/2 | 1038AS..DS | 15.0-3800 | 225 | 119,000 | 120,000 |
| 18 x 2 | 891SP | 1.0-450 | 750 | 15,000 | 16,000 |
| 24 x 2 | 892SP | 1.0-600 | 1000 | 17,500 | 22,000 |
| 24 x 1-1/2 | 1044AS | 20.0-4800 | 300 | 164,000 | 165,000 |
*Allowable peak energy/voltage will depend on the resistance value; consult factory
**Derate by 50% with oil resistant coating on Type AS resistors. Energy ratings
are based on pulses <10 milliseconds.
Type SP ratings can be substantially greater for longer pulses. Consult factory.