DANOTHERM / OHMEGA
DANOTHERM / OHMEGA
OHMEGA Steel Tube Technology
Ohmega Resistors are resistors based on steel tube technology. They can be air cooled or water cooled.
Water cooled resistors can be supplied from a standard line from 5 kW to 500 kW having protection degree IP00 – IP65.
Air Cooled types can be used in aggressive environments and if high degree of protection is required.
OHMEGA OEM Resistor Elements
The Resistor Wire in these elements is mounted in a compressed steel tube and fixed by compressed MgO.
Applications are: Water cooled resistors, High Voltage Snubber Resistors, High Load High Temperature Load Resistors and air cooled resistors in aggressive environments.
OHMEGA Small Water Cooled Standard Types SV
Power Range 5kW - 22 kW (Steady State).
Steel Tube Resistors mounted in a stainless steel tank with length dependíng on nominal power and diameter 76mmØ.
To be mounted with standard tube mounting brackets.
OHMEGA PCG
Designed for heavy application and to withstand long time overload. Covered in stainless steel AISI 304. Case made in zinc plated steel or in stainless steel if requested.
OHMEGA Small Water Cooled type WHB's in Aluminium profiles
Power range: 1000W - 15 kW Steel Tube Resistorn mounted in Aluminium Profiles
OHMEGA Large Water Cooled Standard Types V14
Steel Tube Resistors mountes in Water Tanks.
Power Range: 25kW - 500 kW
(Steady State)
OHMEGA OEM Resistor Elements
The Resistor Wire in these elements is mounted in a compressed stainless steel tube and fixed by compressed MgO.
Water cooled Resistors,
High Voltage Snubber Resistors,
High Load High Temperature Resistors and
Air Cooled Resistors in Aggressive Environments.
We supply resistors in diameter size 8,5mmØ to 23mmØ, in lengths 300mm to 6m bended in custom designed shape.
Some applications are:
Water cooled Brake Resistors in Diesel-Electric vehicles
Brake resistors for robots
Brake resistors for Elevators
| Power Range | 100W - ...5kW |
| De-rating | 100% PN @40 °C - 80% @ 100 °C |
| Environmental | -40 °C - 90 °C |
| Resistance Tolerance | ± 10% |
| Dielectric Strength | 2500VAC - 8000VAC |
| Working Voltage | 600V - 4 kV |
| Protection class | IP00 |
| Max surface temperature | 800 °C |
| Cooling media | AIR; Water; Oil |
| Connection | Screw; AMP |
OHMEGA Small Water Cooled Standard Types SV
SV14/600-3, SV14/800-3, SV14/1100-3, SV14/1600-3 and SV14/1899-3 is a range of water cooled medium power brake resistors.
POWER RANGE: 5kW - 22 kW
The resistors consist of stainless steel tube resistors with diameter 14 mm and length 600mm to 1900mm mounted in stainless steel water tanks. The electrical connections comply with protection class IP 00 to IP 65 according to customer specifications. Danotherm has developed thermal models for all resistor types and resistor values. By using these models we are able to calculate the temperature rises in the resistor wire for all possible load applications. We offer our assistance to our customers to find the optimum solution for any situation.All types can be offered with thermo watch.
Specifications
| Power Range | 5 kW - 22 kW, Average |
| Environmental | 0°C - 60 °C |
| Resistance Tolerance | ± 10% |
| Dielectric Strength | 2500VAC, 3500VAC |
| Working Voltage | 690VAC / 1100VDC |
| Insulation Resistance | > 2 M OHM |
| Protection class | IP00 - IP65 |
| Cooling media | Fresh Water |
| Pressure | Test: 10 BAR / Working: 6 BAR |
| Thermo watch (optional) | Optional |
| Connection | Screw |
OHMEGA PCG
This resistor group is designed for heavy application such as elevators, cranes or for big electrical motor braking. This type of resistor has specifications that make them suitable for harsh conditions. The OHMEGA PCG has capability withstand overload for a long time without any damage as well as the power limits indicated insure that the temperature doesn't damage the environment. The enhanced of protection allows for the unit to be used in heavily moisturized environments. It also ensures stability and reliability.
The resistor elements are covered in stainless steel AISI 304 and the surrounding case is made in zinc plated steel. If requested the case can be made in stainless steel. The standard resistor is supplied with thermal protected steel tubes.
Due to the special constuction the OHMEGA PCG is completely silent during impulses.
Specifications
| Power Range | 2,5 kW - 7 kW |
| Pulse Load | 5X in 10s |
| Over Load | 10X in 5s |
| De-rating | 100% PN @40 °C - 75% @ 90 °C |
| Resistance Tolerance | ± 10% |
| Dielectric Strength | 4500 Vrms per 60s |
| Working Voltage | 1000 VAC |
| Insulation Resistance | > 50 M OHM @ 5000 Vdc |
| Protection class | IP54 |
| Max surface temperature | 800 °C |
| Cooling media | Air |
| Connection | Screw |
OHMEGA Small Water Cooled type WHB's in Aluminium profiles
These resistors are mounted in aluminium profiles and contains up to 3 Ø16mm elements. There are 3 different aluminum profiles and the length can be optimized according to individual specifications.
Specifications
| Power Range | 8 kW - 20 kW |
| Pulse Load | 4 X @ 5s |
| Environmental | 0°C - 60 °C |
| Resistance Tolerance | ± 10% |
| Dielectric Strength | 4500 VAC |
| Working Voltage | 1500 VAC |
| Insulation Resistance | >20 M |
| Protection class | IP 54 |
| Cooling media | Water (Sweet), Oil |
| Pressure | 8 Bar |
| Thermo watch (optional) | Adjustable |
| Connection | Screw |
| Vibration | EN 60 068-2-6; Fc |
OHMEGA Large Water Cooled Standard Types V14
V14-150-08, V14-250-16 and V14-350-28 is a range of water cooled high power brake resistors. The resistors consist of stainless steel tube resistors with a diameter of 14 mm and length 2200mm (V14/2200) mounted in stainless (AISI 304 or AISI 316) water tanks. The electrical connections complies to protection class IP 00 to IP 65 according to customer specifications. Danotherm has developed thermal models for all resistor types and resistor values. By using these models we are able to calculate the temperature rises in the resistor wire for all possible load applications. We offer our assistance to customers to find the optimum solution for any situation. All types can be offered with thermo watch.
POWER RANGE 25 kW - 500 kW
Specifications
| Power Range | 20kW - 500 kW |
| Pulse Load | 1s/120s: 4,5* PN; 10s/120s:2 |
| Environmental | 0°C - 60 °C |
| Resistance Tolerance | ± 10% |
| Dielectric Strength | 3500V AC |
| Working Voltage | 1000V AC |
| Protection class | IP00 - IP 65 |
| Max surface temperature | As Cooling Water |
| Cooling media | Water (Sweet), Oil |
| Pressure | Working: 6 Bar; Test: 10 Bar |
| Thermo watch (optional) | Adjustable |
| Connection | Screw |
| Vibration | EN 60 068-2-6; Test Fc |
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