Hupp Electric Motors Equipment

CORE LOSS TESTERS:
Two Lexsco core loss testers, including a 300KVA capable of testing stators up to 10,000 HP.
Stators are tested both before and after burn-off /coil removal. The core loss testers are also used for testing
the integrity of rotor cages.

BURN-OFF OVENS:
Three burn-off ovens. One is designed for armatures and usually does not require the removal of the commutator.
Another, our Steelman, uses a microprocessor and monitors the actual stator temperature.
The control on this oven virtually eliminates any core degradation that could occur during the burn-off procedure.

DRYING/CURING OVENS:
Four ovens used for curing varnish and drying windings. The ovens used for drying have programs that utilize a
two-step drying cycle. This process is necessary to avoid damage to the insulation system of the motor being dried.

VPI SYSTEM:
Two Imprex VPI systems. One is six-foot in diameter and
the other is ten-foot in diameter. The ten-foot diameter system
is computer controlled and includes a print out of all parameters
that are monitored. We also have a smaller,
three-foot diameter system that is currently not in use.

WINDING MACHINES:
Several winding machines including a Samatic Micro Controlled Computer Feed Coil Machine
with DC Wizard Head Attachment and Software. This winder has the coil information inputted into an on-board computer
and winds each group automatically with a preset tension. The DC attachment allows us to level-wind DC coils up to 600 lbs.

FORM COIL EQUIPMENT:
A James Coil Machine. This pneumatic machine is used to break (form into shape) rectangular wire loops for
form-wound coils. This machine can also be used for making form-wound armature coils.
We have an Inverter Controlled-Loop Winder with an ACE Tensioner.
Other form-coil equipment includes three Taping Machines and a Pneumatic Coil Press.

MACHINING EQUIPMENT:
Ten lathes of various sizes, the largest having a swing of 55 inches and a center-to-center distance of 20 feet.
Three vertical mills.
One horizontal boring mill.
One universal mill.
Five drills including a 4-foot arm 9-inch column radial arm drill.

SPECIALIZED MACHINING EQUIPMENT:
Fowler/Bowers Holematic XT Bore Gage. This bore gage is a digital measuring device used for checking bearing bores.
It provides near error-proof readings with exceptional repeatability.

Shaver Kudell EZE-SLEEVER Endbell Machine. This piece of equipment is used to bore, sleeve, and then finish bore worn
bearing housings.

Liquid Development Co. LDC Electroplater. Among other things, we use the LDC for platinum plating commutators that
are used in corrosive environments.

Cam Industries Automatic Undercutter with a Universal Deburring Attachment. This is a laser aligned automatic mica undercutting machine mounted on a dedicated lathe. It is capable of undercutting commutators in excess of 36” diameter.
The deburring attachment removes the rough edges that normally are found on the sides of the bars after undercutting.

Miller Thermal Arc Spray. This unit is used for building up worn machine surfaces. Thermal arc spraying should not be
confused with powder metalizing, although we have the capability to do that also.

Hupp Electric Motors Spin Caster. This is an inverter driven spin caster capable of doing babbit bearings up to 12” bore.

BALANCE EQUIPMENT:
Three stationary balancers. With capacities of 1,000 pounds,
5,000 pounds, and the largest can handle up to 15,000 pounds.

Several portable balancers that are used both in-house and in the field.
One of the portables is a digital two-plane balancer made by IRD.
This balancer can be used to precision balance an assembled machine
at operating speed.

MOTOR CIRCUIT and WINDING TEST EQUIPMENT:
Two Baker Advanced Winding Analyzers (AWA) with a 30kV add on Power Pak. The AWAs both have on-board computers
and are capable of performing surge comparison tests, DC high potential testing, phase-to-phase resistance testing,
resistance-to-ground tests, and polarization index tests. All test data parameters and results can be printed out.

Electrom Digital Winding Analyzer that performs surge comparison tests, DC high potential tests, step voltage tests,
and polarization tests. It can also be configured to test DC field or interpole coils for shorted turns.

Samatic Digital Motor Tester. This device is a portable off-line motor circuit analyzer with an additional on-line feature
that allows testing for broken rotor bars.

Baker 112 surge tester that is used in our small motor department

PdMA Motor Circuit Analyzers. These units run resistance to ground, capacitance to ground, winding inductance,
winding resistance, rotor influence, polarization index and dielectric absorption tests.

The Baker AWAs and the Samatic mentioned above have special fixtures for testing armatures.

DC ARMATURE TEST EQUIPMENT:
Two Monolithic bar-to-bar testers. These are used to determine whether an armature winding has shorts or opens.
The PdMAs mentioned above also have a bar-to-bar function. We also utilize several growlers of various sizes and shapes.

MMS 2000 Commutator Profiler. This tests the uniformity of commutator bar segments. It prints out a strip chart that shows
the relative height of each commutator bar.

Biddle Digital Micro-ohmmeter with 100 amp add on booster. This is used to test coils, winding resistance, rotor cages,
and tig welds.

POWER SUPPLIES/TEST SETS:
Each department has its own test area and power supplies. The power supplies (AC & DC) range in size from
small portables to the largest, which is a Hypotronics 2,500 kVA AC/DC Motor Test Set. This set has taps to
13,800 VAC, Armature supply 0-750VDC 1500A, and a field supply of 0-700VDC 90A.