We RAMELEX PVT LTD are manufacturers of electrical
power connectors for over 16 years and through our R&D
department we have reached to a very high quality power
connectors keeping IS 5561-1970 as minimum syllabus
for the quality of the product.
While manufacturing the power connectors, we see the
following parameters are keenly observed.
1) Purity of aluminum alloy.
We see that for optimum electrical conductivity the
aluminium is to be used is EC grade,that is purity above
2) The cross section of the connector
is not only sufficient to carry the required rated current
of the equipment keeping, temperature rise within specified
limits of IS 5561-1970, but should also be capable of
carrying overcurrent for some period. More importantly
clamps and connectors should withstand the fault current
without any mechanical or electrical distortions/ damages.
They should also be capable of sustaining short time
fault current of not less than rated short circuit current
capacity of the equipment for which the connector is
used, as per IS 5561-1970.
3) Homogeneity of jointing material
and the conductor.
For keeping the contact resistance of the joint within
limit as specified in IS 5561-1970, it is essential
that material composition of the clamp material and
the conductor material should be identical so that the
joint after compression becomes homogeneous. We therefore
strictly take care to follow the above principle.
4) It is also of prime importance to
see that there should not be voids in between the surface
of the clamp material and the conductor material after
crimping. If the crimping joint is cut for cross sectional
view we should see that the two surfaces are in such
a firm contact that we can not identify the border between
both surfaces which finally gives us best result for
minimum contact resistance. For this purpose we have
our own manufactured crimping machines designed and
developed with continuous research and development process.
5) Mechanical strength of the joint.
While observing the electrical requirements,
it is also of prime importance to see that the joints
are capable of sustaining the mechanical tension due
to self-weight and conductor tension due to stringing
in between two terminals of the equipment's / conductors.
Therefore the joints are tested as per IS 5561-1970
for mechanical strength also from recognized govt. laboratories.
6) Physical standards
While complying the electrical and
mechanical standards as per IS 5561-1970, it is also
highly important to maintain high physical standards
for the clamps and connectors.
1) The dimensional sizes of the clamps
should be such that the current density should be sufficiently
low so that the resistance is reduced substantially.
2) The plain surfaces or cylindrical
surfaces should be highly smooth so that contact surfaces
are firmly struck-up to each other giving no room for
air gaps. This is achieved by high quality of die-casting
and skill full machining.
3) High quality stainless steel bolts.
The contact surfaces are firmly connected to each other
with the required pressure using high quality of stainless
steel nuts and bolts and stainless steel washers, where
palm connections are involved. This gives an added advantage
of zero circulating current due to nonmagnetic characteristics
of stainless steel material. This will give reduction
in power loss.
This avoids loose contacts and ensures long life due
to rust proof construction and also helps in maintenance
while removing the clamps and connectors.
4) Physical dimensions of palm, pipes, sleeves etc.
such as length, width, ID , OD, hole dia wall thickness
of the clamps are designed to see that quality of the
product is over and above the I.S. 5561-1970 requirements
Testing of the hydraulically compressed power connectors.
We all know that only by admiring our
own product is not sufficient to satisfy the customers
but testing, examining and certification of the product
is essential for the recognized institution to prove
5) Mainly by obtaining a quality certificate is not
sufficient unless supported by last past experience.
We have got experience in manufacturing, providing &
fixing the power connectors for last fifteen years and
till now our yearly turnover for this product in providing,
fixing and supplying is to the tune of Rs. 20 crores as on.
Incidentally we want to put up the humble point that
these hydraulically crimping type clamps & connectors
are far superior to bolted type clamps & connectors
as well as to recently introduced wedge type clamps
and connectors due to void less surface contacts.
6) Homogeneity, high contact pressure less resistance
less wear and tear and suitable for all atmospheric
conditions provide long maintenance free life for the