Cressall

Dynamic Braking

Standard dynamic braking resistors – on demand (part 2)

ES Series, 0.6 – 8kW Continuous

  • Our ES range is usually available from stock so there’s no waiting for the right DBR
  • Spiral wire wound resistor element on ceramic former
  • Negligible noise
  • Low inductance
  • Temperature stable design, low increase of resistance value
  • Optional thermal switch
  • Terminal block mounted at one end of the enclosure, cover for terminal block, allow for ingress protection IP 20
  • Easy installation: Pre-drilled mounting holes, knock-outs in terminal cover, units suitable for horizontal or side mounting.

DBR Series, 6 -25 kW Continuous:

  • Spiral wire or wound edgewound strip resistor element
  • Temperature stable design, low increase of resistance value
  • Standard thermal switch
  • Option for IP21 drip proof canopies
  • Integral terminal compartment
  • Easy installation: Pre-drilled mounting holes, knock-outs in terminal compartment, units suitable for horizontal or side mounting.
  • Option for 304 stainless steel enclosures
  • Dispatched from stock for common sizes, manufactured in a few days for other ratings.
Power
kW
DBR Resistance
Min. Value
Resistance
Tolerance
Dimensions, mm
L W H
Mounting centres
L W
Weight
kg
0.6kW ESH 4.7Ω -0/+5% 288 121 141 236 92 1.4
1kW EST 6.8Ω -0/+5% 367 121 141 315 92 1.8
1.5kW ES1 10.0Ω -0/+5% 467 121 141 415 92 2.2
2kW EST2 3.3Ω -0/+5% 367 213 141 315 185 3
3kW ES2 5.0Ω -0/+5% 467 213 141 415 185 3.8
4.5kW ES3 3.3Ω -0/+5% 467 307 141 415 278 5.4
6kW ES4 1.5Ω -0/+5% 500 388 195 410 360 6.6
8kW ES8 0.75Ω -0/+5% 500 388 390 410 360 11.5
1.5kW HP1 10.0Ω -0/+10% 508 144 140 451 86 4.5
3kW HP2 5.0Ω -0/+10% 508 239 140 451 181 6.5
4.5kW HP3 3.3Ω -0/+10% 508 333 140 451 275 8.5
6kW DBR12 2.7Ω -0/+10% 766 330 140 700 290 16
9kW DBR18 2.7Ω -0/+10% 800 335 304 700 290 25
12kW DBR24 2.7Ω -0/+10% 800 335 304 700 290 33
18kW DBR36 1.5Ω -0/+10% 800 335 429 697 280 45
25kW DBR54 1.5Ω -0/+10% 800 539 453 697 480 60

SD and HPR series braking resistors – to 100kW

For higher power applications Cressall offer expanded mesh and stamped grid resistor designs, well proven in regenerative and rheostatic braking applications around the world. With these elements we can offer flexible and cost effective solutions for higher powers and heavy overloads. Units are designed to meet the customer’s specified duty but are based on standard formats, meaning that design, manufacture and despatch can be in just a few weeks.

  • Low inductance expanded mesh or stamped grid element
  • Choice of resistance alloys giving a wide cost vs. performance option
  • Choice of enclosure materials: pre-galvanised mild steel, 304 or 316 stainless steel allowing designs to be optimized for both price and performance.
  • Optional thermal switch Option for IP23 drip proof canopies
  • Manufactured to order but dispatched in a few weeks to standard designs

<Part 1