Combination straps are used to connect element to bind post or element to element.
Mosi2 heating element combination straps is made from high purity aluminium which provides high electrical conductivity, flexibility and resistance to oxidation at high temperatures.
Specifications
The mosi2 heating elements combination straps are offered in 75, 150, 200, 400 and 600 amperage rating.
Suitable for element sizes
4/9
12/24
3/6
6/12
9/18
Identification
Combination straps are described by the element size and working length in centimeters.
TYPE SM-01
Element Size 3/6 Mm 4/9mm
TYPE SM-02
Element size 3/6 mm 4/9mm
TYPE SM-03
Element size 3/6 mm 4/9mm
TYPE SM-04
Element size 3/6 mm 4/9mm
TYPE SM-05
Element size 6/12 mm
TYPE SM-06
Element size 6/12mm
TYPE SM-07
Element size 6/12mm 9/18mm
TYPE SM-08
Element size 9/18mm
Element size 12/24 mm
TYPE SM-05
Element size12/24 mm
Availability
All straps are available from stock in standard and custom lengths and can be shipped 2-3 days after receipt of an order.
Installation instructions
The combination clamp and strap of the recommended size should always be used. The element terminal ends get hot from the I2R energy in the cold ends and from the heat conducted from the hot zone out along the cold ends. Using electrical straps of a smaller size or different material can cause the element cold ends and straps to overheat and fail.
It is very important that mosi2 heating elements combination straps be initially tightened securely. After the elements are brought to temperature, the nut and bolt should be tightened again. Allow about 24 hours between tightening for the clamp portion of the straps relaxes on the first heating and becomes loose on the element.
If the clamp is loose, it causes a poor electrical connection that is high in resistance which causes the element terminal end to overheat. This can cause the element and terminal strap to fail.
The strap must not cause a bending force, i.e. side force on the element. This will cause the heating section (Le) to bend and possibly break. We recommend the working length of the strap be approximately 12 mm longer than the distance between the two connecting points.
Failure to properly maintain strap-to-element connection will lead to premature failure of element and strap.
If previously used straps are used with new elements they should be examined. Any straps with white powder, broken wire strands, or small globules of aluminum should not be used.
- 1.Tighten all strap-to-element connections
- 2. Always tighten with two wrenches. Avoid twisting the element.
- 3. Always use the torque wrench on the nut.
- 4. Tighten toward the higher end of the torque range if possible.
For cyclic operation of furnace and elements – Follow the instructions below:
After first heating cycle:
- 1.Allow elements and straps to cool to near room temperature.
- 2.Re-tighten all strap-to-element connections .
- 3.Connections should now remain tight for awhile, however, routinely check strap-to-element connections and adjust as needed.
For continuous operation of furnace and elements after installation – Follow the instructions below:
Approximately 48 hours after mosi2 heating elements have achieved temperature for the first time, or at an appropriate time within the cycle:
- 1.Turn off power to furnace and elements.
- 2.Re-tighten all strap-to-element connections using same instructions as above.
Use caution when working with hot elements and straps.
