GE Multilin DGT Series User manual

Title page
GE Multilin's Quality
Management System is
registered to ISO9001:2000
QMI # 005094
GE Consumer & Industrial
Multilin
GE Multilin
215 Anderson Avenue, Markham, Ontario
Canada L6E 1B3
Tel: [phone] Fax: [phone]
Internet: http://www.GEmultilin.com
Instruction manual
DGT revision: 1.0x
Manual P/N: 1601-9045-A1
GE publication code: GEK-113441
Copyright © 2008 GE Multilin
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ISO9001:2000
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*1601-9045-
DGT
Distributed Generation Trip
Control System
Fast, wireless trip control

© 2008 GE Multilin Incorporated. All rights reserved.
GE Multilin DGT Distributed Generation Trip Control System instruction manual for revision
1.0x.
DGT Distributed Generation Trip Control System, EnerVista, EnerVista Launchpad,
EnerVista DGT Setup, and FlexLogic are registered trademarks of GE Multilin Inc.
The contents of this manual are the property of GE Multilin Inc. This documentation is
furnished on license and may not be reproduced in whole or in part without the permission
of GE Multilin. The content of this manual is for informational use only and is subject to
change without notice.
Part number: 1601-9045-A1 (January 2008)
FCC Part 15 Notice
The equipment described in this manual complies with Part 15 of the FCC Rules. Operation
is subject to the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation. This device is specifically designed to be
used under Section 15.247 of the FCC Rules and Regulations. Any unauthorized
modification or changes to this device without the express approval of the manufacturer
may void the user’s authority to operate this device. Furthermore, this device is intended
to be used only when installed in accordance with the instructions provided in this manual.
Failure to comply with these instructions may void the user’s authority to operate this
device.

TABLE OF CONTENTS
DGT DISTRIBUTED GENERATION TRIP CONTROL SYSTEM – INSTRUCTION MANUAL 1–1
Table of contents
1. INTRODUCTION Overview ..........................................................................................................................1
Cautions and warnings .................................................................................................................................1
Description of DGT system operation.....................................................................................................2
Description of the DGT system units.......................................................................................................3
DGT order codes ...............................................................................................................................................6
Example of a DGT order code.....................................................................................................................6
Standard features ............................................................................................................................................6
Options and Accessories...............................................................................................................................7
Specifications..................................................................................................................8
User interface specifications ......................................................................................................................8
Inputs specifications .......................................................................................................................................8
Outputs specifications ...................................................................................................................................8
Power supply specifications........................................................................................................................8
Communications specifications................................................................................................................9
Testing and certification ...............................................................................................................................9
Physical specifications...................................................................................................................................9
Environmental specifications .....................................................................................................................9
2. INSTALLATION Mechanical installation...............................................................................................11
Dimensions....................................................................................................................................................... 11
Installation Considerations....................................................................................................................... 12
Mounting the enclosure .............................................................................................................................12
Electrical installation...................................................................................................14
Terminal identification ................................................................................................................................14
Terminal strip - power connections......................................................................................................15
Terminal strip - IO connections...............................................................................................................15
Antenna and feedline installation.............................................................................17
Maintaining regulatory compliance (RF output power)...............................................................18
3. USER INTERFACE Transceiver layouts......................................................................................................19
PC requirements...........................................................................................................22
Connecting to a PC.......................................................................................................23
4. SOFTWARE EnerVista DGT-DG Setup Software............................................................................25
Installing the EnerVista "DGT-DG" Setup software ........................................................................25
DGT-DG configuration.................................................................................................................................27
EnerVista DGT-Utility Setup Software ......................................................................31
Installing the EnerVista "DGT-Utility" Setup software................................................................... 31
DGT-Utility configuration - Creating a Systems File......................................................................33
DGT-Utility configuration - Creating and uploading a Settings File ...................................... 40
5. OPERATION Initial power-up ............................................................................................................47
Checking for normal, in-service, operation.............................................................48

1–2 DGT DISTRIBUTED GENERATION TRIP CONTROL SYSTEM – INSTRUCTION MANUAL
TABLE OF CONTENTS
6.
TROUBLESHOOTING
Corrective action ..........................................................................................................49
Firmware updates ........................................................................................................52
Updating the DGT-R firmware .................................................................................................................52
Updating the DGT-U and DGT-D firmware ........................................................................................52
7. DGT
INTERCONNECT
CABLING
8. REPLACEMENT
ASSEMBLIES

DGT DISTRIBUTED GENERATION TRIP CONTROL SYSTEM – INSTRUCTION MANUAL 1–1
DGT Distributed Generation Trip
Control System
Chapter 1: Introduction
GE Consumer & Industrial
Multilin
Introduction
Overview
The DGT Distributed Generation Control System is a wireless communication system
designed to transfer Trip Status signals between a Utility’s substation or recloser site and
Distributed Generation locations. The DGT system supports point to multipoint
communication over distances up to 30 miles and accommodates up to 6 Distributed
Generation locations. There are three main products in a DGT System, the DGT-U, DGT-D
and DGT-R
DGT-U is installed by a Utility at the substation or recloser. It transfers trip signals to
remote DG sites and receives status notification back from each, after a trip operation has
been completed.
DGT-R is a repeater unit installed by the Utility at or near the Utility substation, to
coordinate wireless communication between the DGT-U/DGT-R and the DGT-D(s).
DGT-D is installed at the Distributed Generation site. It receives the trip signal over-the-air
from the DGT-U and outputs the status to the user’s breaker device. The DGT-D also
accepts a connection from the user’s breaker equipment that confirms the trip status back
to the DGT-U.
At the core of all DGT units is a wireless DGT transceiver. The DGT transceivers are
frequency hopping; spread spectrum radios designed for license-free operation in the 902-
928 ISM band. The 902-928 ISM band is license-free throughout North America. The DGT
transceivers employ the latest Digital Signal Processing (DSP) technology to provide highly
reliable long distance communication.
Cautions and warnings
Before attempting to install or use this device, it is imperative that all caution and danger
indicators in this manual are reviewed to help prevent personal injury, equipment damage,
or downtime. The following icons are used to indicate notes, cautions, and dangers.

1–2 DGT DISTRIBUTED GENERATION TRIP CONTROL SYSTEM – INSTRUCTION MANUAL
OVERVIEW CHAPTER 1: INTRODUCTION
Figure 1-1: Note icons used in the documentation
The standard note icon emphasizes a specific point or indicates minor problems that may
occur if instructions are not properly followed.
The caution icon indicates that possible damage to equipment or data may occur if
instructions are not properly followed.
The danger icon provides users with a warning about the possibility of serious or fatal
injury to themselves or others.
Description of DGT system operation
Figure 1-2: Typical DGT system
In Figure 2, DGT-U units installed at the Utility Substation and Recloser sites continuously
monitor the trip status and transmit that status every 28 to 56 milliseconds to DGT-D units
installed at the Distributed Generation sites. At the DGT-D locations the trip status is wired
into breaker device. An auxiliary contact from the breaker is wired back into the DGT-D.
The DGT-D units continuously monitor the status of the auxiliary contact and transmit that
status every 28-56 milliseconds back to the DGT-U units constantly confirming current
status. All communication is coordinated through the DGT-R Unit in order to achieve
maximum range.
If a trip condition is detected by the Utility’s equipment, the trip status is energized at the
DGT-U. When the DGT-D units receive the energized trip status, the output status will
disconnect the Breaker device at the Distributed Generation site. The status of auxiliary
contact from the breaker is also energized and transmitted back to the DGT-U thereby
confirming that the Trip has occurred.
NOTE
CAUTION
DANGER
DGT-R
COMM
TOWER FAULT
1
SUBSTATION
Relay
DGT-U
Breaker
2
3
4
7
UTILITY DISTR. GENERATION
OWNERS
1. Fault in power line or distribution system.
2. Relay at substation detects fault.
3. Relay sends trip command to DGT-U.
4. DGT-U wirelessly sends trip command to DGT-R.
5. DGT-R transfers trip command to DGT-D at DG site.
6. Breaker at DG site trips.
7. DGT-D unit sends status confirmation to DGT-R.
8. DGT-R transfers status info back to DGT-U.
GEN SITE #1
Relay
Breaker
DGT-D
5
6
887001A1
GEN SITE #7
Relay
Breaker
DGT-D
5
6
DGT-U
Recloser
(optional)

CHAPTER 1: INTRODUCTION OVERVIEW
DGT DISTRIBUTED GENERATION TRIP CONTROL SYSTEM – INSTRUCTION MANUAL 1–3
The entire round trip time from trip initiation at the substation into the DGT-U to
confirmation from the DGT-D occurs in under 150 milliseconds. The integrity of the Trip
Status state is maintained through the use of a 32-bit CRC calculation. The CRC prevents
the erroneous or malicious manipulation of the Trip Status so that only true data is acted
upon. Additional security precautions ensure that only authorized DGT-D devices are able
to wireless achieve association with a Utility’s DGT-U and DGT-R devices, so that the
integrity of each DGT system is maintained.
Description of the DGT system units
The DGT-U, DGT-R and DGT-D, are completely packaged units that includes the
appropriate DGT radio transceiver, power supply, necessary input and output terminations,
antenna jumper cable and lightning protection contained in a weather resistant, pad
lockable enclosure. The only connections required are for primary power, the external
antenna cable, and wiring to the external equipment. All of these wiring connections are
made within the enclosure leaving no connections exposed to weather. DGT units are
designed to be installed in wall-mount or pole-mount configurations. All DGT components
are housed in a NEMA-approved enclosure measuring 13.75 inches high x 11.85 inches
wide x 6.5 inches deep (35cm x 30.1cm x 16.5cm).
There are internal variations in the components contained in a DGT-U, DGT-D or DGT-R.
These variations are shown in Figures 3 through 5
Figure 1-3: DGT-U layout
C
CE
SDP 2-24-100T
SDP 2-24-100T
SOLA
S O L A
24-28 V
24-28 V
OK
24 VDC/2.1A
24 VDC/2.1A
--++
LN
1211109
13 14 15 16
5678
4321
POWER SUPPLY
POWER SUPPLY
12345678910 11 12 13 14
DGT-U
ANTENNA
ANTENNA
A1
POWER
SUPPLY
I/O
ANTENNA CABLE A2
A3 A4
A13
H
E
A
T
E
R

1–4 DGT DISTRIBUTED GENERATION TRIP CONTROL SYSTEM – INSTRUCTION MANUAL
OVERVIEW CHAPTER 1: INTRODUCTION
Components in the DGT-U are:
• A1 – The DGT-U Radio Transceiver
• A2 – The 125 V DC / V AC Power Supply
• A3 – 125 V DC Relay for Trip Status Output
• A4 – 125 V DC Relay for Trip Status Confirmation Input
• Terminal blocks for external wiring connections
• 10 W self-regulating internal heater
• A13 – Bulkhead Lightning Arrestor with Connection for DGT-U Antenna Feedline
• Jumper Cable (not shown) for Connection from Lightning Arrestor to DGT-U
Transceiver
• Yagi Directional Antenna (not shown)
• Antenna Feedline (not shown)
Figure 1-4: DGT-R layout
Components in the DGT-R are:
• A1 – The DGT-R Radio Transceiver
• A2 – The 125 VDC/VAC Power Supply
• Terminal blocks for external wiring connections
• 10 W self-regulating internal heater
• A13 – Bulkhead Lightning Arrestor with Connection for DGT-R Antenna Feedline
P
PWR LINKCOM1LAN
+ -
PWR 6-30 VDC(2A max)
PWR 6-30 VDC(2A max)
COM2
DGT-R
CE
SDP 2-24-100T
SDP 2-24-100T
SOLA
S O L A
24-28 V
24-28 V
OK
24 VDC/2.1A
24 VDC/2.1A
--++
LN
POWER SUPPLY
POWER SUPPLY 123
ANTENNA
A1
POWER
SUPPLY
ANTENNA CABLE
A2
A13
H
E
A
T
E
R

CHAPTER 1: INTRODUCTION OVERVIEW
DGT DISTRIBUTED GENERATION TRIP CONTROL SYSTEM – INSTRUCTION MANUAL 1–5
• Jumper Cable (not shown) for Connection from Lightning Arrestor to DGT-R
Transceiver
• Omni-directional Antenna (not shown)
• Antenna Feedline (not shown)
Figure 1-5: DGT-D layout
Components in the DGT-D are:
• A1 – The DGT-D Radio Transceiver
• A2 – The 125 VDC/VAC Power Supply
• A3 – 125 VDC Relay for Trip Status Output
• A4 – 125 VDC Relay for Trip Status Confirmation Input
• Terminal blocks for external wiring connections
• 10 W self-regulating internal heater
• A13 – Bulkhead Lightning Arrestor with Connection for DGT-D Antenna Feedline
• Jumper Cable (not shown) for Connection from Lightning Arrestor to DGT-D
Transceiver
• Yagi Directional Antenna (not shown)
• Antenna Feedline (not shown)
1
1211109
13 14 15 16
5678
4321
CE
SDP 2-24-100T
SDP 2-24-100T
SOLA
S O L A
24-28 V
24-28 V
OK
24 VDC/2.1A
24 VDC/2.1A
--++
LN
POWER SUPPLY
POWER SUPPLY
12345678
ANTENNA
DGT-D
A1
POWER
SUPPLY
I/O
ANTENNA CABLE
A2
A3 A4
A13
H
E
A
T
E
R

1–6 DGT DISTRIBUTED GENERATION TRIP CONTROL SYSTEM – INSTRUCTION MANUAL
OVERVIEW CHAPTER 1: INTRODUCTION
DGT order codes
The information to specify a DGT unit is provided in the following order code figure.
Figure 1-6: DGT order codes
Example of a DGT order code
DGT-RH3: DGT-R unit with 125 V DC / V AC power supply, Omni 7.0 dB antenna, and 150
foot long antenna cable (with connectors).
Standard features
Each unit in the DGT Series comes with a number of standard features, as shown below.
Table 1: Standard features - DGT-U
Item Description
DGT-U Control unit for substation application
Power supply 125 V DC / V AC (no internal battery or charger)
I/O 1 input, 8 outputs
LEDs 11 (1 input, 7 output, 1 power, 1 link, 1 service)
Enclosure NEMA 4
Lightning arrester Nominal breakdown voltage 230V
PC Connection cable 1 RJ11 to DB9 - 6 feet long
Field connection hardware Terminal blocks