FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
As amended by the Patents (Amendment) Act, 2005
AND
The Patents Rules, 2003
As amended by the Patents (Amendment) Rules, 2005
COMPLETE SPECIFICATION
(See section 10 and rule 13)
TITLE OF THE INVENTION An RTD mounting equipment.
APPLICANTS (S)
Crompton Greaves Limited, CG House, Dr Annie Besant Road, Worli, Mumbai 400 030, Maharashtra, India, an Indian Company
INVENTOR (S)
Wadbude Sahebrao of Crompton Greaves Limited, Machine (M7) Division, D-5 Industrial Area, MPAKVN, Mandideep - 462046, Madhya Pradesh, India; an Indian National.
PREAMBLE TO THE DESCRIPTION:
The following specification particularly describes the nature of this invention and the manner in which it is to be performed:

Field of the Invention:
This invention relates to the field of mechanical engineering.
Particularly, this invention relates to the field of thermal measurement assemblies and equipment.
Specifically, this invention relates to an RTD mounting equipment.
Background of the Invention:
An electric motor is an electro-mechanical assembly that converts electrical energy into the mechanical energy. Most electric motors operate through the interaction of magnetic fields and current-carrying conductors to generate torque. A motor is an exothermic assembly. It exuberates heat upon working.
A transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils. A transformer is also an exothermic assembly. It exuberates heat upon working.
Motors, transformer, generators, and many such moving electro-mechanical assemblies are heat generating assemblies. Their temperature monitoring is essential to their working as overheating may lead to stresses, changes in resistance, and many such complications.
It is important that a relatively accurate range of temperature is established by its measurement.

For such measurement, resistance temperature detectors or resistive thermal devices (RTDs) are used. These are temperature sensors that exploit the predictable change in electrical resistance of some materials with changing temperature. Resistance thermometers are usually made using platinum, because of its linear resistance-temperature relationship and its chemical inertness.
In motors, RTD's are used for measuring temperature in stator core to avoid causes of motor winding failure. In existing practices, normally, core RTD's are not being used. Only winding and bearing RTD's are used for winding and bearing temperature detection. Also, the placement of RTD's is such that it gets poilt sna damaged as it cannot handle the high ratings.
For core RTD's, the existing arrangement was in stator winding slot i.e. Core RTD used trip type between the stamping slot and stator coil which is the major cause of core RTD's failure. During High Voltage test of the motor, the core RTD's open up if proper fitting is not done and if insulation on the core RTD's is weak with respect to the High Voltage test Value.
Prior Art:
KR20100063380 discloses an annular bobbin around a stator with grooves in the bobbin for placement of temperature sensing elements. Instead of providing an entire bobbin, existing ribs on the stator body need to be used.
Objects of the Invention:
An object of the invention is to provide temperature measurement of electromechanical assemblies in a fail-proof manner.

Another object of the invention is to provide temperature measurement of electromechanical assemblies, during its high-voltage working, in a fail-proof manner.
Yet another object of the invention is to aid provide accurate temperature detection of electro-mechanical assemblies.
Still another object of the invention is to prevent RTD failure.
Summary of the Invention:
According to this invention, there is provided an RTD mounting equipment adapted to house a RTD and further adapted to be fitted on a core assembly, said equipment comprises a cylindrical body with an inner annular recess at its operative top portion, thereby providing a step and an inner cylindrical concentric body, such that a flanged upper cylindrical body of a bulb-type RTD rests against said step of said cylindrical body, thereby allowing for appropriate placement of said RTD in said RTD mounting equipment.
According to this invention, there is provided a core assembly having integral ribs, radially located, exterior to said core assembly, said ribs fitted with an RTD mounting equipment adapted to house a RTD and further adapted to be fitted on a core assembly, said equipment comprises a cylindrical body with an inner annular recess at its operative top portion, thereby providing a step and an inner cylindrical concentric body, such that a flanged upper cylindrical body of a bulb-type RTD rests against said step of said cylindrical body, thereby allowing for appropriate placement of said RTD in said RTD mounting equipment.

Typically, said equipment includes a female threading internal to the inner cylindrical body to engage male threading of said RTD.
Typically, each of said equipment is welded adjacent each of said ribs.
Brief Description of the Accompanying Drawings:
The invention will now be described in relation to the accompanying drawings, in which:
Figure 1 illustrates a core assembly with RTD mounting equipment along with a bulb-type RTD;
Figure 2 illustrates a first closer view of a rib of the core assembly with RTD mounting equipment, on the rib, along with a bulb-type RTD;
Figure 3 illustrates a second closer view of a rib of the core assembly with RTD mounting equipment, on the rib, along with a bulb-type RTD;
Figure 4 illustrates a bulb-type RTD; and
Figure 5 illustrates an RTD mounting equipment.
Detailed Description of the Accompanying Drawings:
According to this invention, there is provided an RTD mounting equipment. Figure 4 illustrates a bulb-type RTD (100).

The bulb-type RTD includes a recessed annular slot (12) along its cylindrical body (14). This recessed annular slot (12) includes male threading (14). Further, the cylindrical body includes a flanged upper cylindrical body (16) such that its diameter is greater than the lower cylindrical body (14).
Figure 5 illustrates an RTD mounting equipment (200).
In accordance with an embodiment of this invention, there is provided a cylindrical body (22). This cylindrical body has an inner annular recess (24) at its operative top portion. The provisioning of this inner annular recess provides a step (26) and an inner cylindrical concentric body. The flanged upper cylindrical body (16) of the bulb-type RTD rests against the step (26) of the cylindrical body (22). This allows for appropriate placement of the RTD in the RTD mounting equipment (200).
There may be a female threading internal to the inner cylindrical body to engage the male threading (14) of the RTD.
Figure 1 illustrates a core assembly (300) with RTD mounting equipment along with a bulb-type RTD (100) in the mounting equipment (200).
Figures 2 and 3 illustrate various views of a rib (350) of the core assembly (300) with RTD mounting equipment (200), on the rib (350), along with a bulb-type RTD (100).
A core assembly (300) has integral ribs (350) which are radially located, exterior to the core (300). The RTD mounting equipment (200) is placed adjacent the rib (350). The fitment may be by means of welding.

This arrangement results in no damage to the RTD or to the core. IT enables
efficient reading of core temperature.
It is completely free to sense core temperature with about 99.9% accuracy and
there is no cause of failure during High Voltage (HV) test of the motor with the
core (300). This assembly is sustainable against dust or working conditions of core.
Further, this arrangement is tamper-proof with respect to core assembly or core
working.
While this detailed description has disclosed certain specific embodiments of the present invention for illustrative purposes, various modifications will be apparent to those skilled in the art which do not constitute departures from the spirit and scope of the invention as defined in the following claims, and it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.

We claim,
1. An RTD mounting equipment adapted to house a RTD and further adapted to be fitted on a core assembly, said equipment comprising a cylindrical body with an inner annular recess at its operative top portion, thereby providing a step and an inner cylindrical concentric body, such that a flanged upper cylindrical body of a bulb-type RTD rests against said step of said cylindrical body, thereby allowing for appropriate placement of said RTD in said RTD mounting equipment.
2. An RTD mounting equipment as claimed in claim 1 wherein, said equipment includes a female threading internal to the inner cylindrical body to engage male threading of said RTD.
3. A core assembly having integral ribs, radially located, exterior to said core assembly, said ribs fitted with an RTD mounting equipment adapted to house a RTD and further adapted to be fitted on a core assembly, said equipment comprising a cylindrical body with an inner annular recess at its operative top portion, thereby providing a step and an inner cylindrical concentric body, such that a flanged upper cylindrical body of a bulb-type RTD rests against said step of said cylindrical body, thereby allowing for appropriate placement of said RTD in said RTD mounting equipment.
4. A core assembly as claimed in claim 3 wherein, said equipment includes a female threading internal to the inner cylindrical body to engage male threading of said RTD.

5. A core assembly as claimed in claim 3 wherein, each of said equipment is welded adjacent each of said ribs.