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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

Specifications
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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