Ground Fault Protection Ships and Offshore Platforms - Bender.org

Ground Fault Protection
Ships and Offshore Platforms
Brochure
NAE1111780 / 01.2012

2
Insulation Monitoring on Ungrounded Systems
Ungrounded systems onboard ships and offshore platforms are continuously monitored
by a BENDER ground detector. Connected between the active conductors and
ground (the hull), the detector superimposes a small measuring voltage onto the
system. If a ground fault occurs, the measuring circuit is closed and a small measauring
current will flow. The measuring current is proportional to the insulation resistance
(the magnitude of the ground fault), and is evaluated by the detector.
BENDER ground detectors employ the latest in detection technology, including the following:
DC measuring voltage
A frequently used measuring principle is
the superimposition of a DC measuring
voltage between the system and ground.
This is the standard measuring principle for
pure AC ungrounded systems, both single-
and three-phase.
Approvals
Llyod’s Register
of Shipping
Underwriters
Laboratories Inc.
AMP measuring principle
BENDER's AMP measuring principle overcomes
the limitations of DC measuring
signals by superimposing a clocked, pulsed
measuring voltage onto the system. The
signal is microprocessor controlled to
automatically adapt itself to prevailing
system conditions, such as high leakage
capacitances. This signal is ideal for toda'ys
modern power distribution systems that
include: Pure DC systems, systems with a
mix of AC and DC (including rectifiers), and
systems with variable frequency drives
(VFDs).
Type
Fields of application
Insulation monitoring
Coupled systems / systems connected via tiebreaker
Ungrounded systems with rectifiers / variable frequency drives
Compatible with BENDER's ground fault location system
System nominal voltage
System frequency range
Response values/contacts
Number of response values
Response values
Contact, main alarm
Contac, prewarning
Contact, other
Communication
LCD display
Pre-alarm display
RS-485 interface
Real time clock
General features
Measuring principle
Capability to latch alarm
Selective fault location L+/L-
Connection monitoring
Detailed history memory
Standby capability
Ground fault location
Nominal voltage IRDH575B1-…
Nominal voltage IRDH575B2-…
Frequency range
Evaluators
Compatible current transformers
Approvals

BENDER Ground Detectors for Ungrounded Systems
Functions and characteristics at a glance
IR1575 IRDH275B – IRDH375B IRDH575 IR420-D6
Control and auxiliary circuits Main circuits Main circuits
Control and auxiliary circuits
Offline monitoring
-- × × --
-- × × --
-- -- × --
3(N)AC, DC, AC/DC 0 … 480 V 3(N)AC 0 … 793 V DC 0 … 650 V
extentable via coupling unit
see ”Ground fault location“ --
DC, 30 … 460 Hz DC, 0.2 … 460 Hz DC, 42 … 460 Hz --
2 2 2 2
2 kΩ … 1 MΩ 1 kΩ … 10 MΩ 1 kΩ … 10 MΩ 100 kΩ…10 MΩ
1 SPDT contact 1 SPDT contact 1 SPDT contact 1 SPDT contact
1 SPDT contact 1 SPDT contact 1 SPDT contact 1 SPDT contact
-- system fault system fault/EDS alarm --
Two lines Two lines Four lines ×
× × × --
-- BMS protocol (B version) BMS protocol --
-- × (B version) × --
AMP AMPPlus AMPPlus DC
× × × While in alarm
× × × ×
System and ground connections System and ground connections System and ground connections Ground connections
-- × (B version) × --
-- × (B version) × --
-- -- AC, 3(N)AC 20 … 575 V DC 20 … 575 V --
-- -- AC, 3(N)AC 340 … 760 V DC 340 … 575 V --
-- -- DC, 42 … 460 Hz --
-- -- EDS460/EDS461 --
-- -- W, WS, WR series --
-- GL, UL, LR LR, UL --
3

4
BENDER Ground Detectors - The Ideal Choice for Ungrounded
Systems on Ships and Offshore Platforms
General features of IRDH275/375/575 and IR1575
n The latest in measurement technology for AC and DC ungrounded systems
n Simple to operate
The user-friendly menu structure and large keys make the device simple to operate
n Clear indication
Backlit, easy-to-read LCD display
n A wide range of alarm values
Two programmable alarms provide warnings when the insulation resistance
drops below pre-set values
n Easy to install and to connect
Both DIN-rail and panel mounted devices are available. Panel mounted versions
utilize color-coded, plug-in terminals for installation.
Special features of IRDH275B/375B/575
n Monitoring ungrounded systems connected via tiebreaker
Both automatic and manual control of devices to ensure proper operation on
systems connected via tiebreakers
n Informed at the press of a button
Additional information such as system leakage capacitance, parameter values etc.
are immediately available at the press of the info button
n Compatiblity with BENDER's ground fault location system
IRDH575 series detectors may be connected to BENDER's EDS series ground fault
location system, providing notification of where a fault is located
n History memory
By pressing the INFO key, additional information and up to 99 alarm messages
with time and date stamp immediately available
n Remote communication capable
Detectors are compatible with BENDER's communication system, providing
Ethernet, Modbus/TCP, or Modbus/RTU communication to main stations

Application Examples - Ungrounded Monitoring
Insulation monitoring of a electric propulsion system with IRDH375B
Insulation monitoring of secondary distribution system with IR1575
5

6
Application Examples - Ungrounded Monitoring
Insulation monitoring of primary distribution system with IRDH375 – Insulation monitoring of secondary distribution system with IR1575
Interconnected ungrounded systems
Many ungrounded systems onboard
ships and platforms with have systems
interconnected via a tiebreaker. Depending
on the system's operation, this
tieberaker may be open or closed.
BENDER's ground detectors allow for
either automatic or manual control of
the detectors' operation to ensure that
only one device is active on a circuit at
one time.

Offline Monitoring
A-ISOMETER® IR420-D6
Offline monitoring with IR420-D6
Offline monitoring with IR420-D6
n Provides safe monitoring of electrical insulation integrity in
cer tain installations
n Monitors the insulation resistance of de-energised TN, TT
and IT systems, e. g. fire extinguisher pumps, slide-valve
drives, standby generators, deck machinery in offshore
platforms and marine environment
n Gives early warning of insulation degradation, before motors
(or generators) with deteriorated insulation are in immediate
danger of failing on start up
n Early warning for preventive maintenance to be scheduled
when convenient
n Eliminates failure and the need for an emergency replacement
or rewind
n Two separate response values
100 kΩ…10 MΩ
7

8
Ground Fault Location for Ungrounded Systems
BENDER‘s complete ground fault location
system helps increase the reliability of
your system, reduce costs, and create predictive
maintenance by locating ground
faults quickly and easily. The EDS series
extends the capabilities of the IRDH575
ground detector to not only know that
there is a problem, but to find it as well.
EDS series location modules assist in
automating the process of finding faults
by connecting to subfeeders or loads
and providing notification when a fault
has been located. Remote indicators also
work in conjunction with this system to
notify nurse and technical stations quickly
when a problem has occured. Remote
communication solutions allow personnel
in main stations to know when a problem
has occured in real-time.
Advantages of ground fault location with the EDS series
Improved economic
efficiency
n Time and costs for maintenance
are re duced
n Weak points in the installation
are recognized
Insulation fault location with communication via FTC470
Optimized maintenance
n Ground fault location
without disconnecting
the electrical installation
n Selective fault location by
fast and precise localization
of the faulty subcircuit
n Centralized indication
and operation with LCD
display
n Reduced maintenance
costs
Increased operating
reliability
n Electrical installations
are kept at a high level of
availability
n Interruptions to systems
on a single fault condition
are avoided
n More comfort for passengers
and crew
Flexible and configurable
solutions
n Cost-effective construction
with modular system
components
n Current transformers are
available in different sizes
and shapes (round, rectangular
and split core)

Components of the Ground Fault Location System
Type of supply system AC, DC, AC/DC (mixed systems) AC, DC, AC/DC (mixed systems)
Applikation Main circuit Control circuit
Function Ground fault detector and ground fault location controller
Type IRDH575 IR1575 IRDH575
Nominal system voltage Un (B1) 3AC/AC 20…575 V DC 20…575 V DC/AC/3 AC 20…480 V 3AC/AC 20…150 V/DC 20…150 V
(Version IRDH575B1-4227, RDH575B1-4235)
Nominal system voltage Un (B2) 3AC/AC 340…760 V DC 340…575 V -- --
Supply voltage --
IRDH575B1-435
IRDH575B2-435
IRDH575B1-4235
IR1575PG1-435
IRDH575B1-427
IRDH575B1W-4227
AC 88…264 V
DC 77…286 V
AC 88…264 V
DC 77…286 V
AC 340…460 V
AC 88…264 V
DC 77…286 V
DC 19,2… 72 V -- DC 19,2… 72 V
IR1575PG1-434 -- AC 16…72 V, DC 10,2…84 V --
Test current 10/25/50 mA 10/25 mA 1/2,5 mA
Response values 1 kΩ …. 10 MΩ 1 kΩ … 1 MΩ 1 kΩ …. 10 MΩ
LC display 4 x 20 characters 2x16 characters 4 x 20 characters
alarm relay 3 changeover contacts 2 changeover contacts 3 changeover contacts
Interface/protocol RS-485 (BMS) -- RS-485 (BMS)
Address range 1…30 -- 1…30
Ground fault location module
Type EDS460-D/DG… EDS490-D… EDS460-L… EDS490-L… EDS461-D… EDS491-D… EDS461-L… EDS491-L…
Graphic LCD × × -- -- × × -- --
7-segment / LED display -- -- × × -- -- × ×
US: DC 16…94 V,
AC 42…460 Hz 16…72 V
US: AC / DC 70…276 V
AC 42…460 Hz
EDS460-D-1,
EDS460-DG-*
EDS460-D/DG-2,
EDS460-DG-2*
EDS490-D-1 EDS460-L-1 EDS490-L-1 EDS461-D-1 EDS491-D-1 EDS461-L-1 EDS491-L-1
EDS490-D-2 EDS460-L-2 EDS490-L-2 EDS461-D-2 EDS491-D-2 EDS461-L-2 EDS491-L-2
Scanning time < 10 s for up to 1080 measuring channels < 10 s for up to 1080 measuring channels
Response value 2…10 mA 0,2…1 mA
Residual current display 100 mA...10 A (EDS460DG 20mA-2 A) 10 mA … 1 A
Parameterization function × × -- -- × × -- --
Error codes display × × × × × × × ×
Address range 1…90 1…90 1…90 1…90
Internal clock (RTC) × × -- -- × × -- --
History memory × × -- -- × × -- --
Alarm relay “Common alarm” 2 x 1 changeover contact 2 x 1 changeover contact
Alarm relay per channel -- 12 x 1 N/O contact -- 12 x 1 N/O contact -- 12 x 1 N/O contact -- 12 x 1 N/O contact
* EDS460-DG-…particularly for localising insulation faults in DC IT systems with a number of branch circuits where high system leakage capacitances are involved
9

10
Monitoring Grounded and HRG Circuits
RCMS series devices are multi-channel ground fault location
modules which can monitor up to 12 separate circuits /
branches per device. Multiple devices may be interconnected
to each other to increase this amount. RCMS devices are
designed for use on grounded and high-resistance grounded
systems. RCMS modules are also compatible with BENDER's
communication system, to provide remote notification to
technicians in the event of an alarm.
Typical applications include any equipment that is solidly or
resistance grounded. On ships, this may include entertainment
areas, and cabins. On offshore platforms, this may include
topside equipment, such as motors.
Residual current monitoring with communication via FTC470
RCMS460-D-2

Communication solutions
BENDER‘s line of communication products allow for fast
notification of personnel when a problem has occured. Critical
systems monitored by BENDER equipment may be connected
to a variety of remote indicators to notify personnel of the
current status of the system. Communication gateways bring
your electrical safety network into the 21st century by displaying
system information via several standard protocols, such
8
TCP/IP/Ethernet
BENDER RS-485 Bus
Visualization – PC / Touch
Web
Browser
TCP/IP
Modbus/TCP
Modbus/TCP
Inosoft
VisiWin
OPC
Server
Wizcon
Supervisor
InduSoft
Studio
OPC Modbus/TCP SCADA / BMS
Communication possibilities with BENDER systems and devices
1 - BENDER devices
2 - MK2430 Remote Indicating Station
3 - BENDER communication bus
4 - COM460IP Ethernet / Modbus/TCP communication gateway
4 - FTC470XMB Modbus/RTU communication gateway
5 - FTC470XDP Profibus/DP communication gateway
7 - Ethernet network or Modbus/TCP network
8 - Connected PC with web browser or visualization software
9 - OPC server connectivity capabilities
3
9
7
1
4
Wonderware,
WinCC, ...
2
as Ethernet, MODBUS, and PROFIBUS. The Ethernet gateway
device additionally features an easy-to-use status page, accessible
through a web browser. E-mail and SMS messaging when
an alarm has occurred is also available. Utilizing this communication
system allows for timely and cost-effective deployment
of service personnel and can help avoid equipment damage or
failure.
10
Ethernet
Modbus/TCP
COM460IP
11 12 13
Router
Modbus/TCP
Modbus RTU
Profibus DP
WiFi
5 6
FTC470 XMB
10 - SCADA / BMS connectivity capabilities
11 - COM460IP capability: E-mail notification
13 - COM460IP capability:
Web browser based navigation via the Internet
13 - COM460IP capability:
SMS notification
XDP
11

Solutions For Your Electrical Safety Needs
With our complete portfolio of relay protection products
For over 70 years, BENDER has been a leader in meeting elecrtical safety needs with our large portfolio of ground fault
protection products. BENDER products enhance the safety of electrical systems and help to save money, reduce downtime,
and give the peace of mind that your system is protected by the latest in electrical safety technology.
n Ground Fault Monitors and GFCIs for grounded and high-resistance grounded systems
n Ground Fault Detectors for ungrounded systems
n Voltage, Current, and Frequency Relays
n Remote Communication Solutions
Ground Fault Protection for Ungrounded Systems
n A-ISOMETER® Ground Detector Series
n EDS Ground Fault Location Systems
Ground Fault Protection for Grounded Systems
n RCM Series Ground Fault Monitors for Single-Phase and
Three-Phase AC Systems
n RCMA Series Ground Fault Monitors for Single-Phase AC,
Three-Phase AC, and DC Systems
n RCMS Series Multi-Channel Ground Fault Monitors for
Single-Phase AC, Three-Phase AC, and DC Systems
n Lifeguard Series Ground Fault Circuit Interrupters for
Single-Phase AC, Three-Phase AC, and DC Systems
North American Headquarters • Coatesville, PA
Toll-Free: 800.356.4266 • Fax: 610.383.7100
T M
General Purpose Protection Relays
n Undervoltage and Overvoltage Relays for AC and DC
Systems
n Overfrequency and Underfrequency Relays
n Overcurrent and Undercurrent Relays for AC and DC
Systems
Communication Solutions
Visit www.bender.org for information, tools, and more:
n Complete listings of products, documentation, datasheets, and technical information
n Knowledgebase of technical information answering your ground fault questions
n Product selection tools, including ground fault relays, currrent transformers, and more
n Local representative information
n Standard Protocol Converters for Ethernet, MODBUS, and
PROFIBUS
n Customizable Visualization Capabilities
n Simple System Integration
www.bender.org • E-mail: info@bender.org
Canada • Brampton, ON
Toll-Free: 800-243-2438 • Fax: 905-799-3051
Document NAE1111780 / 01.2012 / © Bender Inc. All Rights Reserved.