Rib-Wound Power Adjustable Resistors
(DQS)Introduction (DQS)
Low-cost and high-precision power rib-wound adjustable wirewound resistors (DQS)
for high energy dissipation.
Adjustable Ribbon-Wound (DQS) have been a main product line at Token Electronics for years. Adjustable ribwound resistors are particularly useful where high energy is to be dissipated in the lower ohmic ranges and high power capacity. Precision winding design, provide uniform windings to be applied extremely close to each other resulting in significantly higher resistance values.
In significant savings in space and cost, Adjustable (DQS) Series is ideal replacements for many standard round-wire resistors.
Downloads complete PDF version Rib-Wound Power Adjustable Resistors (DQS).
Features :
- Resistance Tolerance: K(±10%), J(±5%), H(±3%).
- Power-rib wirewound resistor with adjustable lug supplied.
- Suitable for high energy to be dissipated in the lower ohmic ranges.
- Design as heavy-duty resistors to withstand frequent start-stop cycles.
- Hollow core to permit secure fastening with spring-type clips or thru bolts with washers.
- Durability Flame resistant coating and all-welded construction.
- Terminals suitable for bolt connection or soldering.
Power Rating :
- Based on 25°C free air rating. The stated wattage rating applies only
when the entire resistance is in the circuit. - Setting the lug at an intermediate point reduces the wattage rating
by approximately the same proportion. - Example: If the lug is set at half resistance, the wattage is reduced
by approximately one-half. - Wattage is proportional to this adjusted resistance value.
- Adjustability is 10% to 90% of full resistance value.
Options :
- Adjustable, fixed, or tapped styles are available.
- Special terminals available for non-standard applications.
- Single and double quick connect terminals can be specified.
- Standard lug terminals available with or without terminal hardware.
- Non-inductive Ayrton Perry windings can be specified.
- Special temperature coefficients, tolerances
To Calculate Max. Amperes :
- Voltage = (Watts x Ohms) 1/2
The Power Adjustable (DQS) Resistor is RoHS compliant and lead free. For unusual technical requirements and custom special applications, please contact us.
Dimensions (DQS 75W ~ 2000W)
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Wattage Rating |
Dimensions (Unit: mm) | Max. Pickable Resistance Value (Ω) | ||||||||||||||
A | B | C | D | E | F | G | H | I | J | K | L | M | O | |||
75W | 110 | 25 | 16 | 30 | 8 | 150 | 5 | 18 | 6 | 166 | 58 | 1.2 | 6 | 27 | 1.5~8Ω | |
90W | 90 | 28 | 18 | 32 | 8 | 130 | 5 | 19 | 6 | 146 | 60 | 1.2 | 6 | 27 | 1.5~9Ω | |
120W | 110 | 28 | 18 | 32 | 8 | 150 | 5 | 19 | 6 | 166 | 60 | 1.2 | 6 | 27 | 2~12Ω | |
150W | 140 | 28 | 18 | 32 | 8 | 180 | 5 | 19 | 6 | 196 | 60 | 1.2 | 6 | 27 | 2~15Ω | |
180W | 160 | 28 | 18 | 32 | 8 | 200 | 5 | 19 | 6 | 216 | 60 | 1.2 | 6 | 27 | 3~18Ω | |
225W | 195 | 28 | 18 | 32 | 8 | 235 | 5 | 19 | 6 | 251 | 60 | 1.2 | 6 | 27 | 3~23Ω | |
240W | 185 | 35 | 24 | 36 | 10 | 225 | 5 | 19 | 8 | 245 | 76 | 1.6 | 6 | 34 | 5~24Ω | |
300W | 210 | 35 | 24 | 36 | 10 | 250 | 5 | 19 | 8 | 274 | 76 | 1.6 | 6 | 34 | 5~30Ω | |
375W | 210 | 40 | 25 | 38 | 12 | 250 | 5 | 20 | 8 | 274 | 78 | 1.6 | 6 | 34 | 6~38Ω | |
450W | 260 | 40 | 25 | 38 | 12 | 300 | 5 | 20 | 8 | 320 | 78 | 1.6 | 6 | 34 | 6~45Ω | |
600W | 330 | 40 | 25 | 38 | 12 | 370 | 5 | 20 | 8 | 395 | 78 | 1.6 | 6 | 34 | 7~60Ω | |
750W | 330 | 50 | 35 | 50 | 12 | 380 | 6 | 25 | 9 | 400 | 100 | 1.6 | 8 | 40 | 8~75Ω | |
900W | 400 | 50 | 35 | 50 | 12 | 450 | 6 | 25 | 9 | 470 | 100 | 1.6 | 8 | 40 | 8~90Ω | |
1000W | 460 | 50 | 35 | 50 | 12 | 510 | 6 | 25 | 9 | 530 | 100 | 1.6 | 8 | 40 | 12~100Ω | |
1200W | 460 | 60 | 40 | 55 | 15 | 515 | 6 | 30 | 10 | 535 | 110 | 1.6 | 10 | 50 | 12~120Ω | |
1500W | 540 | 60 | 40 | 55 | 15 | 595 | 6 | 30 | 10 | 615 | 110 | 1.6 | 10 | 50 | 15~150Ω | |
2000W | 650 | 65 | 42 | 62 | 15 | 702 | 6 | 30 | 10 | 722 | 115 | 1.6 | 10 | 50 | 15~200Ω |
Characteristics (DQS)
Test Item | Test Methods | Characteristics |
Resistance tolerance | JIS-C-5202 5-1 | Resistance ![]() ![]() ![]() ![]() ![]() |
Temperature coefficient | JIS-C-5202 5-2 | ±400PPM/°C MAX |
Load rating | JIS-C-5202 5-4 | ΔR/R≤ ±(0.5%+0.1Ω) Surface temperature up 350°C MAX |
Short-term overload | JIS-C-5202 5-5 500% rated wattage 5 seconds |
Free of appearance or structural irregularity ΔR/R≤ ±(2%+0.1Ω) |
Insulation resistance | JIS-C-5202 5-6 500VDC | 100MΩ min |
Dielectric withstanding voltage | JIS-C-5202 5-7 1000VDC 1 minute Between terminal and anchor stand |
Free of appearance or structural irregularity ΔR/R≤ ±(0.1%+0.05Ω) |
Terminal strength | JIS-C-5202 6-1 8kg 30 seconds | Free of appearance or structural irregularity |
Vibration | JIS-C-5202 6-3 1.5m/m 10 ~ 50 ~ 10 Hz/min X-Y-Z 2 hours each |
Free of appearance or structural irregularity Surface coating crack ΔR/R≤ ±(1%+0.05Ω) |
Thermal shock | JIS-C-5202 7-3 Room temp 30 minutes ON-55°C 15 minutes OFF |
Free of structural irregularity ΔR/R≤ ±(1%+0.05Ω) |
Humidity | JIS-C-5202 7-5 40°C 90%RH 240 hours |
Free of appearance or structural irregularity Surface coating crack ΔR/R≤ ±(3%+0.1Ω) |
Load life | JIS-C-5202 7-10 90 minutes ON - 30 minutes OFF500 hours |
Free of appearance or structural irregularity Surface coating crack ΔR/R≤ ±(5%+0.1Ω) |
Flame retardation | JIS-C-5202 7-13-3-2 100% - 600% rated wattage load |
US UL-94 flame retardation test V-0 grade noncombustible |
REMARKS: | 1. Resistance and resistance tolerance were tested in-house with micro resistance meter. 2. Coating refers to UL-certified data provided by supplier |
Adjustable Wirewound Application Notes (DQS)
Determination of End Resistance Value of FVR, DQS, DSRA, DSRB, BSR, BSQ:
- Resistance Range means you can choose one maximum resistance value (Max. Pickable Resistance Value / End resistance value)
at one of FVR, DQS, DSRA, DSRB, BSR, BSQ VR (Variable Resistor) type. - After End Resistance Value confirmed, the minimum resistance (start resistance value) will be determined
by depending on resistance of wire and wirewound type.
Power Rating of Variable Resistor:
The part Nunber formation of FVR, DQS, DSRA, DSRB, BSR, BSQ:
Product type
- Rated Wattage
- Max. Pickable Resistance Value (Ω)
- Resistance Tolerance
Product type means one of FVR, DQS, DSRA, DSRB, BSR, BSQ.
Rated Wattage means power rating at End Resistance Value.
Resistance Value (Ω) means maximum resistance value (End Resistance Value).
Resistance Tolerance means precision range of End Resistance Value.
1. Power Rating of VR (Variable Resistor) is determined by the maximum resistance value (End Resistance Value).
2. Resistance and Power Rating should be decreased while you are adjusting the screw.
If you need current constant type or special specifications, please feel free to cntact us.
Order Codes (DQS)
DQS | 1500W | 10R | K | G | ||||||||||||||||||||||||||||||||
1 | 2 | 3 | 4 | 5 | ||||||||||||||||||||||||||||||||
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Specification Download (DQS)
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