Motor options 200-206.pdf
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Motor - Options
Selection & Ratings
NORD Severe Duty + (NSD+)
–
option
Totally-Enclosed Non-Ventilated “TENV”
(OL or OL/H)
–
option
NORD offers a protection package for its motors know
as NORD Severe Duty + (NSD+). This additional
motor protection is for wet and corrosive
environments. The additional protection will ensure
that the motor has a long trouble-free service life in
harsh operating environments. The following are
provided with the package:
NORD motors can be provides in a non-ventilated
enclosure. Non-ventilated motors can provide
benefits in some operating environments. Non-
ventilated motors must have larger motors frames
than standard TEFC enclosure motors. The TENV
motor’s frame size will be twice the frame power size
of the standard TEFC frame for continuous operation.
For intermittent operation a motor can be operated at
a 50% duty cycle at full rated power.
x
Standard NORD motor and gear unit – including
all the NEW sealing and protective features
x
Eteching primer undercoat
Consult NORD for motor performance ratings.
x
Stainless steel (316L) protective coating –
USDA/H1 approved
x
Brakemotors – include a stainless steel wear plate
and sealing dust boot (brake option SR)
Totally Enclosed Blower Cooled “TEBC”
–
option
NORD offers continuous running motor mounted
cooling fans that provide motor cooling at low motor
speeds. When a motor is operated on an inverter at
low frequency, standard rotor fans do not provide
adequate airflow for cooling. NORD’s separate
powered motor cooling fans provide adequate airflow
for cooling. These separately powered fans replace
the standard motor fan cover and fan.
IP 65 enclosure
–
option
NORD motors can be provides with an enclosure
rated IP65. This enclosure protection is suitable for
wet, low-pressure wash down and extremely dusty
environments.
1
st
code number
Foreign body
protection
2
nd
code number
Water protection
See option “Blower Cooling Fan (F & FC)” page 67 for
ratings and selection.
IP
6
Dust tight
Protection against water jets
5
IP 66 enclosure
–
option
NORD motors can be provided with an enclosure
rated IP66. This enclosure protection is suitable for
wet, high-pressure wash down and extremely dusty
environments.
1
st
code number
Foreign body
protection
2
nd
code number
Water protection
IP
Protection against high
pressure water jets
6
Dust tight
www.nord.com
200
G1119
Motor - Options
Selection & Ratings
Condensation Drain Holes
Class H Insulation (ISO H)
–
option
NORD motors can be equipped with condensation
weep holes. These drain holes are placed in the
motor end-bells at the lowest possible point. The
drain holes are closed at the factory with plastic snap
in plugs. They allow for condensation accumulation in
the motor to drain after the closing plugs are removed.
NORD motors can be manufactured with class H
insulation system. Standard NORD motors include
double coated magnetic wire windings rated class H
insulation. This provides extra temperature capacity
for the motor and will lengthen the motor’s life. Class
H insulation rated motors are also an advantage in
some severe applications:
The motor drain holes can be provided by NORD
either open (KD) or sealed with a closing plug (KB).
x
Increased ambient temperature installations –
above 40°C (104°F)
x
Increased elevation installations – above 3300 ft
(1000 m)
CAUTON! – The motor must be installed in the
mounting orientation specified on the nameplate or
the drain holes will not function properly and may
result with the motor filling with water.
x
Applications with a very high number of starts per
hour.
x
Meets class H insulation motor specifications
x
Lower operating frequency when used with
frequency inverter systems
Condensation Drain Holes (KD)
–
option
KD drain holes are shipped open (not plugged).
ORDER NOTE – Mounting position must be
specified including terminal box location
Mounting position
__________
Terminal box location
__________
Cable entry location
__________
Condensation Drain Holes – plugged (KB)
–
option
KB drain holes are shipped by NORD closed by a
sealing plug. In order for the holes to effectively drain
moisture they must be opened.
ORDER NOTE – Mounting position must be
specified including terminal box location
Mounting position
__________
Terminal box location
__________
Cable entry location
__________
Epoxy Dipped Windings (EP)
–
option
In extremely wet environments, the motor windings
are dipped in epoxy for improved moisture protection.
The motor can also be treated with the standard
NORD Severe Duty + (NSD+) package for an even
higher degree of protection.
G1119
201
www.nord.com
Motor - Options
Selection & Ratings
d2
Canopy Drip Cover (RD) –
option
h2
For wet installations where the fan end of the motor is
mounted up, thus allowing water to fall into the
motor’s fan guard, NORD offers a canopy drip cover
to block this falling water.
Double Fan Cowl (RDD) –
option
d3
For wet installations where the fan end of the motor is
mounted up, the NORD Double Fan Cowl provides
protection against falling or wind blown water or snow
from entering the back of the motor.
h3
Motor Space Heater (SH) –
option
Motors subjected to extreme temperature fluctuations
or severe climatic conditions can be damaged by the
formation of condensation. NORD can provide motor
anti-condensation space heaters inside the motor to
heat up the windings when the motor is not operating.
This will prevent moisture from condensing inside the
motor. The space heaters must not be switched on
while the motor is running.
Motor
Frame
Total
Watts
Number
of
Heaters
Motor
Frame
Total
Watts
Number
of
Heaters
63
18 W
1
132
100 W
2
71
18 W
1
160
100 W
2
80
25 W
1
180
100W
2
90
50 W
2
200
120W
2
100
50 W
2
225
120W
2
112
50 W
2
ORDER NOTE – Space heater voltage must be
specified.
Space heater voltage
__________
Voltages available
- specify space heater voltage
when ordering:
115V – 50/60Hz
230V – 50/60Hz
460V – 50/60Hz
other voltages available on request
Motor Second Shaft Extension (WE) –
option
NORD can provide motors with a rear end shaft
extension. This extension can be used as a power
take-off or to mount customer supplied devices.
www.nord.com
202
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Motor - Options
Selection & Ratings
Overload Protection
Thermistor Sensors (TF) –
option
Current-controlled motor protection must be set
according to the rated current shown on the motor
nameplate. Motor operation involving high starting
frequency, short-term duty or large temperature
differences should be protected by internal motor
thermal measuring devices.
Three positive temperature coefficient (PTC)
thermistors are connected in series in the motor
windings, one per motor phase. Thermistors require
an external tripping device. Upon reaching the limit
temperature, the thermistors change their resistance
suddenly. In connection with a tripping device, this
property is employed to monitor the motor
temperature. The relay built into the tripping device
has a make-and-break-contact, which is used in the
control wiring. NORD does not provide the external
tripping device with the TF thermistor option. You
must request a thermistor tripping device separately.
Many Inverters and PLCs include a built in PTC
thermistor evaluation input.
Thermostat (TW) –
option
Three bimetallic switches are connected in series in
the motor windings, one per motor phase. Upon
reaching the limit temperature, this device
automatically open circuits. The installer is
responsible to wire the thermostat into the motor
control circuit. After the temperature has fallen below
the trip limit, the thermostat switch re-sets
automatically. The auto resetting property must be
considered when designing the safety aspects of the
control scheme.
Transition temperature
150 °C +/- 5°C
Resistance < transition
20 ... 500 .
:
Resistance
>
transitions
> 4 k
:
.
Rated voltage
< 7,5 V
Rated current
< 1 mA
Motor ambient
40 °C
Ratings:
NC (Normally Closed) – auto resetting
Voltage - 6 to 500VAC
Current - 1.6 A
Resistance less than 50 m
:
Current-based devices
Temperature-based devices
Ï
= Good protection
Î
= Limited protection
Ð
= No protection
Fuses
Motor Overloads
PTC Thermistor
(TF)
Bimetallic switch
(TW)
Over current up to 200%
Ð
Ï
Ï
Ï
High inertia starting
Ð
Î
Ï
Î
Ð
Î
Ï
Ï
Frequent motor starts
Stalling
Î
Î
Î
Î
Single phasing
Ð
Î
Ï
Ï
Supply voltage deviations
Ð
Ï
Ï
Ï
Supply frequency deviations
Ð
Ï
Ï
Ï
Inadequate motor cooling
Ð
Ð
Ï
Ï
Bearing Damage
Ð
Ð
Ï
Ï
High Inertia Fan (Z) –
option
An optional cast iron motor cooing fan is available.
This fan is used as a mechanical soft start and/or soft
stop. This fan adds inertia to the motor. The high
inertia fan can also be used for a flywheel effect to
store mechanical energy. This can be helpful in
smoothing rapid load changes. The cast iron fan
replaces the standard plastic motor fan.
Motor
Frame
Fan inertia
J
Z
[lb-ft
2
]
Motor
Frame
Fan inertia
J
Z
[lb-ft
2
]
0.0475
0.2684
71..
100..
0.1140
0.5653
80..
112..
0.2375
0.950
0
90..
132..
G1119
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www.nord.com
Motor - Options
Selection & Ratings
Power Plug Quick Connector (MS)
– option
The power plug quick connector type MS is a simple
and fast way to connect and disconnect a motor or
brakemotor. The MS connector is available on NORD
three-phase motors from frame size 63 to 112. The
motor connections are made by a modular power plug
manufacturer by Harting. After the first installation, the
motor can be quickly changed by simply plugging and
unplugging the electrical connections. This will
ensure the new motor is properly wired. This is a
significant advantage to equipment builders who
fabricate machinery on site and then ship to another
location. The motor with the MS connector can simply
be plugged in during final installation.
Advantages:
x
Simple motor wiring
NORD supplies the male connector half mounted on
the motor conduit box. The customer must supply the
female connector half mounted on the power wiring.
NORD supplies a protective plastic cover on the motor
male connector half to protect from dirt and damage
prior to installation.
x
Accurate wiring of motor at final job site
x
Fast motor replacement
x
Accurate wiring of replacement motor
x
Ideal for portable equipment
x
Reduces the required personnel for motor
replacement
x
Faster motor changes reduce down time
See page 110 for detailed dimensions
Plug ratings:
Manufacturer: Harting
Connector: HAN 10 ES / HAN 10 ESS –
cage clamp connectors
Number of pins: 10 – male
Voltage:
500VAC
Current:
16A – continuous
Location options:
Terminal box at position 1
Connector at II
Connector can be at I or ,II or III
www.nord.com
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G1119
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