ELECTRONICS

CATALOG
PROPULSION & CONTROLS

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 WELCOME TO

NRE Locomotive-Electronics, a division of NRE, was founded in 2004 to provide

innovative and high quality solutions for the railway industry. Our railway control
products are used in a broad range of applications in industrial, and traction
markets. NRE’s strategy is to exploit the intrinsic strengths of its core business,
and develop opportunities in new markets with new applications.

Our products are developed, designed and implemented by skilled engineers,

technicians and programmers with extensive experience in the railway, power
generation and industrial control industries. We understand basic business values
like loyalty and trust, and are committed to backing NRE products with excellence.

DESIGN STANDARDS
NRE Locomotive-Electronics is an ISO 9001:2008 registered company. It is
considered a top priority for NRE to continuously improve the quality of our
products and services to meet and exceed customer requirements.

Our commitment to quality is geared towards satisfying our customers and

employees with the aim of maintaining our leadership position as the provider of
innovative solutions for the railway industry.

We design and manufacture high quality, highly reliable products for customers
across the globe.

With NRE Locomotive-Electronics, you can expect:

IMPROVED LOCOMOTIVE EFFICIENCY
Our innovative solutions improve the efficiency and operational performance of
your locomotive equipment.

ADVANCED INFORMATION SYSTEMS

We utilize state-of-the-art global communication systems to bring you real-time
information about your mobile assets.

HIGH QUALITY SOLUTIONS

We take pride in the high performance and accelerated response time of our
solutions and services.

2 NRE ELECTRONICS
TABLE OF
contents
2 NFORCE NHANCE, Cables, Control Boards, Sensors, Axle Speed Equipment, Panels

8 NLIMIT Cables, Labels & Mounting Plates, Assembly & Sensors

11 NLIGHT Fixtures & Bulbs

12 NGAUGE Accurate Fuel Monitoring System

14 NCOMPASS GPS Tracking & Notifications

16 POWER ELECTRONICS

18 ADDITIONAL PRODUCTS
 NFORCE The NFORCE Control System uses the latest technology specifically to allow aging locomotives to
be upgraded to a level of performance matching that of their modern counterparts. The heart of the
NFORCE Control System is a powerful microprocessor that controls the various locomotive systems.
The NFORCE System is based on a modular concept, in which functions can be added later without
changing the entire system.

BENEFITS STANDARD FEATURES

• Initiate locomotive tests from a laptop computer or optional NVISION Display Panel • Main Generator Control
• Advanced wheel slip/creep control increases dispatch adhesion • Transition Control
• Motor management software calculates heat build-up in the traction motors • Field Shunting Control
• Reduce electrical cabinet relays by up to 75% • Advanced Wheel Slip/Creep Control
• Perform and display load tests in real time • Traction Motor Management
• Motoring & Dynamic Braking Control
• Speed Indicator Drive
• Automatic Sanding Control

NHANCE The NHANCE Control System uses the latest technology to allow aging DC
and SW locomotives to be upgraded to a level of performance matching OPTIONAL FEATURES
that of their modern counterparts. The system is designed for four- • Vigilance System
axle locomotives using the 74V batteries to excite the Main Generator,
• Slow Speed Control
providing consistent locomotive performance, increased reliability through
reduction in high maintenance components and greatly improved all • Idle Limiting Control
weather tractive effort. • J1939 CAN Communications
• Engine Governor Control
• Radiator Shutter & Cooling Fan Control
STANDARD FEATURES OPTIONAL FEATURES
• Air Compressor Control
• Increased Adhesion • Operator Interface Display
• Smoother Excitation • Ambient Based Traction Motor Protection • Automatic Ground Relay Reset
• Main Generator Excitation & Protection • Battery Charging Regulation
• Field Shunting Control (if equipped)
• Commutator-Type Load Regulator • Contactor & Relay Control
assembly no longer required • Traction Motor Cutout Control
• Time Based Traction Motor Protection
• Advanced Wheel Slip/Creep Control • NVISION Interface Display
• Automatic Wheel Slip Sanding Control • Load Meter Control
• Integrated Diagnostics
• NGAUGE Fuel Monitoring
• NCOMPASS Wireless System

2 NRE ELECTRONICS
CABLES

Temperature Sensor Cable PART ATTACHMENTS

Part # 057-0001-000
Ambient Temperature Mounting Bracket
Measures ambient air, engine oil and coolant temperature. Part # 665-0017-000
Water Temperature Mounting Bracket
Part # 665-0016-000

Pressure Sensor Cable PART ATTACHMENTS

Part # 057-0002-000
Pressure Connection
Measures pressure from devices such as the Air Compressor, Brake 1/4” NPT
Cylinder and Brake Pipe

ADDITIONAL CABLE PARTS

Axle Generator Cable NFORCE Communication Cable

Part # 057-0003-000 Part # 058-0001-000

Current Sensor Cable NVISION Communication Cable

Part # 057-0005-000 Part # 058-0002-000

CONTROL BOARDS

IO Board Power Supply Board

Part # 580-0003-000 Part # 580-0066-000

TMD Control Board CPU Board

Part # 580-0065-000 Part # 580-0074-000

DBM Board
Part # 580-0037-000

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 SENSORS

1000 Amp Current Sensor PART ATTACHMENTS

Part # 775-0012-000
Electrical Connection
Measures DC or AC (true RMS) current flow from devices such as traction Part # 057-0005-000
motor current and grid current.

SPECIFICATIONS
Nominal Input Current: 1000 Amps peak | Output Signal: 4 to 20 mA, 3-wire connection, 62.5
amps/mA, unipolar Ambient Operating Range: -40º C to +70º C (-40º F to +158º F)

Temperature Sensor PART ATTACHMENTS

Part # 775-0001-000
Temperature Sensor Cable
Measures ambient air, engine oil and coolant temperature. Part # 057-0001-000
Ambient Temperature Mounting Bracket
SPECIFICATIONS Part # 665-0017-000
Range: -100º C to +200º C (-212º F to +392º F) | Output Signal: 4 to 20 mA, 2-wire connection, Water Temperature Mounting Bracket
18.75º C (37.75º F/mA) | Ambient Operating Range: -40º C to +125º C (-40º F to +257º F) Part # 665-0016-000

2000 Amp Current Sensor PART ATTACHMENTS

Part # 775-0003-000
Electrical Connection
Measures DC or AC (true RMS) current flow from devices such as Part # 057-0005-000
traction motors.

SPECIFICATIONS
Nominal Input Current: 2000 Amps peak | Output Signal: 4 to 20 mA, 3-wire connection, 125
amps/mA, unipolar Ambient Operating Range: -40º C to +70º C (-40º F to +158º F)

DC Voltage Sensor
Part # 775-0004-000
Measures DC voltage across the main generator or differential
voltage across a pair of traction motors.

SPECIFICATIONS
Nominal Input Voltage: 0 to 1700 Vdc | Output Signal: 4 to 20 mA, 2-wire connection, 108.75
volts/mA | Isolation Voltage: 20,000 Vdc | Ambient Operating Range: -40º C to +70º C (-40º F
to +158º F)

4 NRE ELECTRONICS
 200 Amp Current Sensor PART ATTACHMENTS
Part # 775-0007-000
Electrical Connection
Measures DC or AC (true RMS) current flow from devices such as the Part # 057-0005-000
main generator field and battery charging.

SPECIFICATIONS
Nominal Input Current: 200 Amps peak | Output Signal: 4 to 20 mA, 3-wire connection, 15.3
amps/mA, unipolar Ambient Operating Range: -40º C to +70º C (-40º F to +158º F)

ADDITIONAL SENSOR PARTS

Voltage Sensor (Double) Pressure Sensor (0-200 PSI)

Part # 775-0008-000 Part # 775-0005-000

Voltage Sensor (Triple) Shock Sensor (10g)

Part # 775-0009-000 Part # 775-0028-000

Voltage Sensor (Quad)

Part # 775-0010-000

AXLE SPEED EQUIPMENT

Axle Generator (500 PPR) Axle Generator Drive Shaft 3”

Part # 908-0001-000 Part # 680-0002-000

Axle Generator (20 PPR) Axle Generator Drive Shaft 6.3”

Part # 908-0002-000 Part # 680-0004-000

Axle Generator (60 PPR) Axle Generator Cable Bracket

Part # 908-0003-000 Part # 715-0002-000

Axle Generator (120 PPR)

Part # 908-0004-000

NRE axle generators are interchangeable with optical style Wabtec /

Q-Tron / Quantum /Siemens axle generators.

NRE is not an authorized distributor, nor is otherwise associated or affiliated with Wabtec* /
Q-Tron* / Quantum* / Siemens*. However, NRE does represent that its NRE replacement parts,
components, subsystems and services are compatible with these brands.

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 PANELS

Shunt Interface Panel (6 Channel)

Part # 775-0011-000
Interfaces with up to six 200 mV/2000 amp shunts, which are used to
monitor various current sources on the locomotive.

SPECIFICATIONS
Input Signal: Six 200 mV/2000 amp inputs | Output Signal: Six 4 to 20 mA, 2-wire connection,
125 amps/mA | Ambient Operating Range: -40º C to +70º C (-40º F to +158º F)

MGA Panel (AR10 or AR15)

Part # 775-0018-000

This sensor uses the main generator’s internal current

transformers to measure current output of the main generator.

SPECIFICATIONS
Output Signal: 4 to 20 mA, 2-wire connection | Ambient Operating Range: -40º C to +70º C
(-40º F to +158º F) Scaling: 4 to 20 mA, 2-wire connection | Monitoring: 8,000 amps @ 20 mA |
Braking: 1,143 amps @ 20 mA

NFIELD Battery Field Driver

Part # 903-0001-000

A large current regulator designed to replace the Load Regulator

Assembly in the battery field circuit of a DC generator.

SPECIFICATIONS
Nominal Input Voltage: 68 to 80 Vdc | Control Signal: 4 to 20 mA, 3-wire connection
Ambient Operating Range: -40º C to +70º C (-40º F to +158º F) | Maximum Output Current: 80 Amps

Trainline Resistor Panel

Part # 904-0001-000
Provides noise suppression for trainlined signals monitored by the
NFORCE Control System.

SPECIFICATIONS
Resistance: Sixteen 1,500 Ohms, 10 W, 1% Resistors | Output: N/A
Ambient Operating Range: -40º C to +70º C (-40º F to +158º F)

Load Control Panel Load Control Kit

Part # 775-0040-000 Kit 903-K0006-000
Used in conjunction with the NFIELD to replace
the OEM Commutator Type Load Regulator

6 NRE ELECTRONICS
 Current Transducer Panel (6 Channel) PART ATTACHMENTS
Part # 905-0001-000
Electrical Connection
Used to provide power for up to 6 current transducer sensors, which are Part # 057-0005-000
used to monitor various current sources of the locomotive.

SPECIFICATIONS
Input Signal: Six 4 to 20 mA, 3-wire inputs | Output Signal: Six 4 to 20 mA, 2-wire outputs
Ambient Operating Range: -40º C to +70º C (-40º F to +158º F)

Current Transducer Panel (12 Channel) PART ATTACHMENTS

Part # 905-0002-000
Electrical Connection
Used to provide power for up to 12 current transducer sensors, which are Part # 057-0005-000
used to monitor various current sources of the locomotive.

SPECIFICATIONS
Input Signal: Twelve 4 to 20 mA, 3-wire inputs | Output Signal: Twelve 4 to 20 mA, 2-wire outputs
Ambient Operating Range: -40º C to +70º C (-40º F to +158º F)

Current Transducer Panel (18 Channel) PART ATTACHMENTS

Part # 905-0003-000
Electrical Connection
Used to provide power for up to 18 current transducer sensors, which are Part # 057-0005-000
used to monitor various current sources of the locomotive.

SPECIFICATIONS
Input Signal: Eighteen 4 to 20 mA, 3-wire inputs | Output Signal: Eighteen 4 to 20 mA, 2-wire outputs
Ambient Operating Range: -40º C to +70º C (-40º F to +158º F)

NVISION
Part # 902-0001-000

The NVISION Display Panel allows the user to interface with the NFORCE
Control System, providing valuable troubleshooting and diagnostics tools.

SPECIFICATIONS
Communication Ports (1): RS-232 port for interfacing to NFORCE | Man-Machine Interface:
4-line by 40-character backlit LCD alphanumeric display screen, 5 button keypad
Ambient Operating Range: -40º C to +70º C (-40º F to +158º F)

ADDITIONAL PANEL PARTS

Shunt Panel (2 Channel) AC Voltage Panel (1 Channel) NVISION II (USB Download)

Part # 775-0016-000 Part # 775-0024-000 Part # 902-0003-000

Shunt Panel (8 Channel) AC Voltage Panel (2 Channel) Slow Speed Setup Panel
Part # 775-0019-000 Part # 775-0025-000 Part # 715-0006-000

MGA Panel (AR 11) AC Voltage Panel (3 Channel)

Part # 775-0035-000 Part # 775-0026-000

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 NLIMIT The NLIMIT Idle Control Module, or Automatic Engine Start/Stop (AESS), reduces fuel consumption
and exhaust emissions by monitoring locomotive operating parameters and automatically shutting
down and restarting the engine during appropriate locomotive idle times. The heart of the NLIMIT Mod-
ule is a powerful microprocessor which is based on a modular concept, in which functions can be added
later without changing the entire system. It’s compact design allows for flexible installation in a variety of
locomotive cabinets regardless of manufacture and vintage.

PRIMARY FEATURES & BENEFITS

• Reduced fuel consumption
• System indicators (lights & sirens), which indicate the status of the NLIMIT Module
• Integrated recording function, which records fuel report statistics, locomotive
statistics, events, and alarm logs
• Governor Assist Pump, which works in conjunction with the engine governor during
restarts to provide sufficient fuel necessary to start the locomotive
• EPD Override, which overrides the engine protection device (EPD) during restarts,
preventing false engine shut downs due to false sensor readings
• Automatic Ground Relay Reset, which resets the Ground Relay after every NLIMIT restart
• EPA 40 CFR part 1033.115(g) certified

OPTIONAL FEATURES
• Load Shedding, which eliminates repeated – and unnecessary – engine restarts
resulting from a low battery voltage condition by turning off battery loads such as
the locomotive headlights and air conditioners
• Electronic Engine Temperature Control, which eliminates existing water manifold
temperature switches, replacing them with a reliable solid-state sensor. Cooling
fans are cycled to maximize operating life.
• High Idle Control, which helps maintain operational engine temperature in
inclement weather.
• Low Idle Control, which provides additional fuel savings when the locomotive is idle,
and awaiting an NLIMIT engine shut down.
• Additional recording functions such as locomotive kilowatt-hour or locomotive
speed and distance.

8 NRE ELECTRONICS
CABLES

Temperature Sensor Cable PART ATTACHMENTS

Part # 057-0001-000
Ambient Temperature Mounting Bracket
SPECIFICATIONS Part # 665-0017-000
Range: -100º C to +200º C (-212º F to +392º F) | Output Signal: 4 to 20 mA, 3-wire connection,
18.75º C (37.75º F/mA) | Ambient Operating Range: -40º C to +125º C (-40º F to +257º F) Water Temperature Mounting Bracket
Part # 665-0016-000

ADDITIONAL PANEL PARTS

NFORCE Communication Cable

Part # 058-0001-000

Pressure Sensor Cable

Part # 057-0002-000

Current Sensor Cable

Part # 057-0005-000

CONTROL BOARDS

NLIMIT Board
Part # 580-0015-000

ADDITIONAL NLIMIT PARTS

NLIMIT Instructional Label NLIMIT Warning Labels

Part # 475-0030-000 Part # 475-0029-000

NLIMIT SW Panel Label Water Temperature Mounting Plate

Part # 475-0053-000 Part # 665-0016-000

LE NLIMIT Instructional Label Ambient Temperature Mounting Plate

Part # 475-0073-000 Part # 665-0017-000

NFORCE Instructional Label EPA Compliance Label

Part # 475-0078-000 Part # 475-0329-000

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 ASSEMBLY & SENSORS

NLIMIT Audio Alarm

Part # 715-0010-000
Operates in conjunction with the NLIMIT or NFORCE system. This panel
sounds to inform ground crew of the system’s operating status

SPECIFICATIONS
Nominal Operating Voltage: 74 Vdc | Output Signal: Single amplitude, single frequency alarm –
approximately 96 dB | Ambient Operating Range: -40º C to +70º C (-40º F to +158º F)

Temperature Sensor PART ATTACHMENTS

Part # 775-0001-000
Temperature Sensor Cable
Measures ambient air, engine oil and coolant temperature. Part # 057-0001-000

SPECIFICATIONS
Range: -100º C to +200º C (-212º F to +392º F) | Output Signal: 4 to 20 mA, 3-wire connection,
18.75º C (37.75º F/mA) | Ambient Operating Range: -40º C to +125º C (-40º F to +257º F)

200 Amp Current Sensor PART ATTACHMENTS

Part # 775-0007-000
Electrical Connection
Measures DC or AC (true RMS) current flow from devices such as the Part # 057-0005-000
main generator field and battery charging.

SPECIFICATIONS
Nominal Input Current: 200 Amps peak | Output Signal: 4 to 20 mA, 3-wire connection, 15.3
amps/mA, unipolar Ambient Operating Range: -40º C to +70º C (-40º F to +158º F)

NLIMIT CAB Buzzer Assembly

Part # 715-0003-000
SPECIFICATIONS
Nominal Operating Voltage: 74 Vdc | Output Signal: Single amplitude, single frequency alarm –
approximately 96 dB | Ambient Operating Range: -40º C to +70º C (-40º F to +158º F)

ADDITIONAL ASSEMBLY & SENSOR PARTS

NLIMIT Indicator Assembly NLIMIT System Harness

Part # 715-0004-000 Part # 725-0008-000

NLIMIT Switch Panel Pressure Sensor (200 PSIG)

Part # 715-0005-000 Part # 775-0005-000

10 NRE ELECTRONICS
NLIGHT The NLIGHT, lasting over 50,000 hours, has LED light elements which use less energy to
provide similar or brighter lighting compared to traditional lighting.

NLIGHT
Part # 909-0001-000

SPECIFICATIONS
Nominal Operating Voltage: 74 Vdc @ 130 mA | Ambient Operating Range: -40º C to +70º C
(-40º F to +158º F) | Light Output: Approximately 535 Lumens (roughly equivalent to 50 watts)
with white, yellow, blue, red and amber lens filters

ADDITIONAL ASSEMBLY & SENSOR PARTS

NLIGHT Fixture (Red) NLIGHT Bulb NLIGHT Fixture

Part # 909-0003-000 Part # 909-0005-000 (120VAC Voltage Supply)
Part # 909-0009-000
NLIGHT Fixture (Amber) Cab NLIGHT (dimmable option)
Part # 909-0004-000 Part # 909-0002-000

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 NGAUGE The NGAUGE is built on GWR technology– “Guided Wave Radar”. A high speed pulse is launched
down the probe, reflects off the surface of the liquid and returns back to the probe, where the total
flight time of the pulse is calculated, and thus the level is measured.

Liquid level/volume is shown on a digital display using user defined units (gallons, liters). The sensor is
customized to the exact tank dimensions, and programmed with overfill alarms.

ADVANTAGES NGAUGE II Display

• Straightforward installation Part # 918-0003-000
• High quality, rugged, modular industrial
design
• No float or moving parts
• Unaffected by liquid properties
• Insensitive to vapor and condensation
• High measuring accuracy
• NFORCE integration ready or stand alone
• Safe and reliable environmental spill
prevention NGAUGE Sensor
• Ease of service: not required to enter the tank Part # 918-0001-000
• Wide range corrosive resistance
• Self cleaning probe
• Data retained without requiring a battery
• Excellent performance at low temperatures
• Static electricity protection
• Can be connected to NFORCE/NCOMPASS for
remote monitoring
ADDITIONAL NGAUGE PARTS

NGAUGE Sensor Head NGAUGE II Base Kit

Part # 775-0023-000 Part # 918-K0006-000

NGAUGE Probe NGAUGE II Remote Display Kit

Part # 775-0034-000 Part # 918-K0007-000

12 NRE ELECTRONICS
 NCOMPASS NCOMPASS answers the questions “Where are my mobile assets, how are they
performing, and how are they being used?” NCOMPASS places location and
operational information at your fingertips. NCOMPASS utilizes components hardened
for the industrial environment, assuring you excellent performance and availability.
NCOMPASS wireless technologies now enable all types of assets to be connected
throughout most of the world. NCOMPASS systems come with a complete wireless support
infrastructure (WLAN, GSM, & Satellite).

GLOBAL POSITIONING
• This system is equipped with an embedded Global Positioning System
(GPS) Module.
– Can provide current location details
– Past location tracking data
– Geofence functionality
– Tracking with mouse over details

UTILIZATION TRACKING
• Condition Based Monitoring
– Monitoring condition of locomotive equipment and relaying of information
• Customer settable listening intervals to poll units for items such as:
– Locomotive idle time (moving and stationary)
– Utilization history (mileage, kilowatt hours, throttle duty cycle, odometer)
– User searchable NFORCE fault logs
– Fleet status mapping

NCOMPASS NOTIFICATIONS
• Customer settable alert functions allow you to select items which will
notify you by SMS or email when active. Some of these items include:
– Geofence & boundary violations
– Excessive speed reports
– Engine restart failures
– Ground relay activations
– Low fuel when used with NGAUGE
– Alert on sensor threshold or state change (customer-settable)
– Remote Over-The-Air (OTA) software updates for both the NCOMPASS
board and the NFORCE CPU

14 NRE ELECTRONICS
 NTRACK System
Part # 921-0001-000

NTRACK answers the question, “Where are my mobile assets?”

It places location and operational information at your fingertips. All
NTRACK systems come with GSM support infrastructure.

FEATURES
• Global positiong system (GPS)
• Past location tracking data
• Geofence functionality
• Tracking with mouse over details
• Web-based tools
• User settable listening interval options
• User settable alerts such as “Open Door”
• Durable construction with robust monitoring
• Long life self-contained batter for portable applications without
local power suck as intermodal containers

ADDITIONAL NCOMPASS PARTS

NCOMPASS Board (with SIM) NCOMPASS Antenna

Part # 580-0056-000 Part # 715-0088-000

NCOMPASS Board (w/o SIM) NCOMPASS Kit (w/o Satellite, w/o SIM)
Part # 580-0076-000 Part # 901-K0097-001

NCOMPASS Harness NCOMPASS Kit (with Satellite)

Part # 715-0087-000 Part # 901-K0085-000

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 POWER
ELECTRONICS

FEATURES
Voltage Regulator Panel • Does not require calibration (74VDC nominal)
Part # 903-0002-000 (EMD) • Aux Gen Field over current protection (14 Amps)
• Software battery over voltage protection @ 80VDC
Part # 903-0023-000 (GE)
• Hardware battery over voltage protection @ 85VDC
This device is designed to replace the OEM Voltage Regulator Assembly • 500Hz PWM control
• +/- 1 volt regulation threshold across the engine throttle range
in the Auxiliary Generator field circuit. The Voltage Regulator (VR)
Panel monitors and regulates the auxiliary generator output voltage by
controlling auxiliary generator field current. As required, the VR varies
the auxiliary generator excitation level to produce the necessary auxiliary
generator output voltage level. Regardless of engine (and auxiliary
generator) speed variances, this voltage level must be maintained at
all times. The VR uses solid-state electronic components to regulate
auxiliary generator output voltage by turning the generator field circuit
On and Off using pulse width modulation techniques. The On time, in
relation to the Off time duty cycle, establishes the auxiliary generator
field current, which controls the auxiliary generator voltage. The VR uses
no mechanical parts, making it very reliable.

SCR Module
Part # 903-0010-000
This device converts the D14 three-phase power for the main generator
field excitation. The SCR consist of a three-phase bridge rectifier circuit
and related transient suppression circuitry. To obtain a controllable current
output one of the diodes in each leg of the bridge is replaced with a silicon
controlled rectifier. Drop-in replacement for EMD 8451653.

SPECIFICATIONS
Storage Temperature: -40º C to +60º C (-40º F to +140º F) | Ambient Operating Range: -40º C
to +50º C (-40º F to +122º F) | Input Signal: D14 alternator three-phase | Output Signal: 0-150
Amps DC

Battery Charging Rectifier Assembly

(Rectifier Module, 18kW)
Part # 903-0011-000
The rectifier module will use modular isolated thermal baseplate
components for the rectifier and diode placements. The primary loads on
the rectifier module are the 64V battery bank, lighting, and control power.
Drop-in replacement for EMD 8479400.

16 NRE ELECTRONICS
 LVPS III 22Kw,
ALSO AVAILABLE
240VAC, 27 & 74VDC outputs
LVPS IV 12Kw, 480VAC, 27 & 74VDC outputs
Part # 903-0012-000 Part # 903-0009-000
The LVPS has been designed to provide two isolated power supplies LVPS 20Kw, 240VAC, 74VDC output ONLY
(74VDC and 27VDC) from the AC output provided by a single genset. Part # 903-0015-000
2 separate power conversion “channels” are provided, 1 for each voltage.
The front end rectifier, DC bus, and control electronics are common for
both DC outputs. 2 transformers are each driven with its own H-bridge
primary and used to implement the 2 separate DC outputs.

DC/DC Converter, 74V to 24VDC, 30A

Part # 903-0013-000
The DC/DC Converter is designed to provide a single isolated power
supply of 24VDC at 30A peak from a 74VDC source. Typical applications
of this converter include solid state lighting supply and PLC control power
supply. The DC/DC Converter is designed to operate without forced air
cooling being required in ambient conditions exceeding 50º C (122º F).

EFI 645/710
Part # 919-001-000
NRE’s complete line of EFI systems gives you several options to choose
from when deciding to upgrade your engine to modern electronic fuel
injection. Our EFI systems provide excellent throttle response throughout
the RPM range along with smooth engine operation. They also offer the
potential for improved fuel economy by making the engine more efficient.
NRE’s EFI systems are the most complete systems available on the
market, giving you everything you need to add powerful and efficient fuel
injection to your system. All of these systems are EPA tested to deliver
proven-performance results. Finally, NRE offers a dedicated support staff
to assist you and answer any questions. NRE EFI systems offer you the
most value for your dollar!

DC CHOPPERS

Chopper III For more information

Part # 903-0004-000
on our custom build
Chopper II (Drop-In)
Part # 903-0005-000
electronics, contact:

618-241-9270 or sales@nre.com

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 ADDITIONAL
PRODUCTS

Event Recorder PART ATTACHMENTS

Part # 920-0008-000
Main Event Recorder Harness
The primary function of the event recorder is to monitor and record Part # 725-0088-000
analog and digital locomotive signals for future downloading and Connects event recorder to analog and digital signals via
locomotive terminal boards
analysis. The event recorder also provides locomotive health monitoring
recordings. The locomotive air system interface consists of a six-port RDU Cable
Air Manifold incorporated within the event recorder. The piping interface Part # 058-0028-000
is on the plug plate end of the recorder box. This manifold contains two Connects event recorder to Remote Download Box
pressure transducers and four pressure switches.
EOT Cable
SPECIFICATIONS Part # 058-0029-000
Memory: 16MB internal | Communication Ports (3): Two RS-232 ports for interfacing to laptop Connects event recorder to locomotive End of Train device
and/or EOT system, USB port for downloading event logs | Internal 6-Port Air Manifold: Two
pressure transducers and four pressure switches | Ambient Operating Range: -40º C to +60º C Remote Download Unit (RDU)
(-40º F to +140º F) | FRA 49, 229, 135 compliant Part # 920-0002-000
The Remote Download Unit is a device that allows data to
PRESSURE TRANSDUCERS be copied from the event recorder at a remote location from
Signal Input Range the event recorder such as the locomotive cab. The data can
be copied to a USB stick or a laptop computer. The Remote
Brake Cylinder 0-100 PSI Download Unit also provides a remote port for the connection
Brake Pipe 0-100 PSI of a laptop computer to the event recorder. The RDU also
provided event recorder health indication.

PRESSURE SWITCHES Stand Alone Alerter

Signal Contact Position Threshold Part # 920-0003-000
Bell Normally Open 15 PSI Delivers audible and visual crew alert signals in-cab as
Horn Normally Open 15 PSI directed by the control module.
Emergency Normally Open 15 PSI
Nullify Normally Open 15 PSI

SPECIFICATIONS
Speed Indicator Storage Temperature: -40º C to +60º C (-40º F to +140º F) |
Part # 908-0005-000 Ambient Operating Range: -40º C to +50º C (-40º F to +122º
F) | Input Voltage: +74 VDC, ±15V (locomotive battery source)
The Speed Indicator is a multi-function, microprocessor-controlled | Speed Signal Input: Pulses per wheel revolution (PPR) square
speedometer designed to provide all of the requirements for accurate wave, 5-12V minimum amplitude of various input signal
types. 20, 60 or 120 PPR optical or other input. | Display:
locomotive speed indications. Imperial units, 3 digit display

Speed Indicator – Metric

Part # 908-0006-000
SPECIFICATIONS
Storage Temperature: -40º C to +60º C (-40º F to +140º F) | Ambient Operating Range: -40º
C to +50º C (-40º F to +122º F) | Input Voltage: +74 VDC, ±15V (locomotive battery source) |
Speed Signal Input: Pulses per wheel revolution (PPR) square wave, 5-12V minimum amplitude
of various input signal types. 20, 60 or 120 PPR optical or other input.
Display: Metric units, 3 digit display

18 NRE ELECTRONICS
Dynamic Brake Hatch
Mounted on Long Hood Frame. Eight Grid Resistor Boxes. Two Blowers.
Inverter Protection Resistance. Cable Assemblies.

Radiator Cooling Fan Assembly

Inverted Squirrel Cage. Dual Speed. Double Winding. 3-Phase Induction
Machines. Low Vibration Levels. Energy Efficient.

Auxiliary Generator
One 3-Phase Pilot Exciter Assembly. Develops 74 VDC at all speeds.
Brushless AC Generator. Voltage rectified by 3-Phase, 6 Wave Diode
System. Nominal Output of 18kW at 55VAC.

Tier 0+ Certified Power Assemblies

NRE carries complete line of 710 & 645 EMD Power Assemblies and
Components.

BENEFITS
100% New Power Assembly | Improved Fuel Economy | Reduced Oil Consumption
Longer Product Life Cycle | 2 Year Warranty

Electrical Cabinets
State-of-the-art electrical cabinets with quality looming and termination

WWW.NRE.COM 19
 Tier 0+ Emission Kits
Tier 0+ Emission Kits by NRE is currently being marketed to the rail and
marine industries. The new kit meets and exceeds the new emission
standard requirements of the new Environmental Protection Agency
regulations for diesel locomotives effective as of January 2010.

KIT COMPONENTS
Emission KIT-E
• Kit Part # NRE8-645E
• Kit Part # NRE12-645E
• Kit Part # NRE16-645E

Emission KIT-E3
• Kit Part # NRE8-645E3
• Kit Part # NRE12-645E3
• Kit Part # NRE16-645E3
• Kit Part # NRE20-645E3

Emission KIT-E3B/C
• Kit Part # NRE8-645E3B
• Kit Part # NRE12-645E3B
• Kit Part # NRE16-645E3B (specify TS or SS upon ordering)
• Kit Part # NRE20-645E3B
• Kit Part # NRE16-645E3C

Emission KIT-F3B
• Kit Part # NRE8-645F3B
• Kit Part # NRE12-645F3B
• Kit Part # NRE16-645F3B

Emission KIT-MUI
• Kit Part # NRE12-710MUI
• Kit Part # NRE16-710MUI

New & Rebuilt Traction Motors

All new and rebuilt Traction Motors for all EMD and GE locomotives.

MOTORS
NR-761
NR-764
NR-D-29
NR-D-31
D-87BTR

20 NRE ELECTRONICS
A HISTORY OF
SOLID GROWTH
NRE continues its history of solid growth using its highly skilled workforce and
state-of-the-art manufacturing facilities to provide quality products and services
to its customers worldwide. Founded in 1984 by Lawrence Beal, NRE has
grown to encompass fifteen facilities and affiliates making it the world’s largest
independent supplier of new and remanufactured locomotives; new and rebuilt
mechanical materials; electrical components; technical support and field services.
1100 Shawnee Avenue
Mt. Vernon, IL 62864
P 618-241-9270

WWW.NRE.COM