Transcript Diapositive 1 - Schneider Electric

VIGILOHM
insulation monitoring devices
by Patrick HENRY
Business Development Manager
Energy Management Solutions
Contents
1.
2.
3.
4.
5.
6.
7.
Introduction – What is Vigilohm?
Earthing arrangements
Applications
How does Vigilohm work?
The Vigilohm offer
Strong points
Conclusion
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Section 1 - Introduction
WHAT IS VIGILOHM?
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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What is Vigilohm?
●Vigilohm is the range of Insulation Monitoring
Devices for Schneider Electric.
●Used in IT earthing arrangements, the solution
●Guarantees process continuity in case of earth fault,
●Improves staff and process safety, and
●Optimizes maintenance.
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Vigilohm products and solutions
Level 1
Manual fault
location
Level 2
Automatic fault
location
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
Level 3
Measurement per
feeder
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Insulation monitoring device (IMD)
functions
●Level 1 : fault detection and signaling, manual fault location (all IMDs)
IM9: for AC networks only
IM9OL: for off-line motor monitoring (TN, TT or IT networks)
IM10, IM20: for AC and DC networks
XGR, XRM: fault location is done manually (current probe + mobile detector)
●Level 2 : automatic fault location
XM200 + XD devices + use of current probe + mobile detector
●Level 3 : feeder measurement + communication
XML / XM300C + XL devices, XD devices
XLI, XTU interfaces
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Section 2
EARTHING ARRANGEMENTS
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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The letters in earthing arrangements
●1st letter represents the transformer neutral
connection to earth T (terre – earth) or I (isolated)
Neutre isolé
De la Terre
Grounded neutral
Ungrounded neutral
●2nd letter represents the load frame connection:
frame connected to earth (T) or neutral (N)
Grounded load frame
Load frame connected
to neutral
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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TT earthing arrangements
●The exposed conductive
parts of the installation
are connected to an earth
electrode (Ra) which is
electrically separated from
the LV substation earth
electrode (Rb).
●Protection by RCDs
MV
LV
L1
L2
L3
N
PE
R
R
B
A
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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TN earthing arrangements
●Protection by overcurrent tripping
TN-C
TN-S
L1
L2
L3
PEN
RP
AB
L1
L2
L3
N
PE
RPA
B
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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IT earthing arrangements
●No protection is needed
L1
L2
L3
R
PE
PAB
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Earthing arrangement & applications
●Earthing arrangement choice will depend on the type of
application:
●TT: small tertiary and residential networks
●TN: industrial networks, large tertiary networks
●IT: marine, some specific hospital areas, for industry applications
with a high service continuity need
●All systems are equivalent with regard to people safety
●In large installations, the best system is a combination of
earthing arrangements.
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Earth fault consequence
230V
●TN-C / TN-S :
CB magnetic tripping
Ph
CB
N
R1
< 10
●TT :
CB tripping with RCD
●IT :
First fault - No effect !!!
Second fault - CB magnetic tripping (like TN-C/TN-S)
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Case of a second fault in IT system
●A short circuit means breaker trips!
L1
L2
L3
PE
R PAB
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Earthing arrangement comparison
TT
IT
TN-C
TN-S
Observation
First Fault
Safety of person
+
++
+
+
IT: UC # 0 on the 1st fault
Fire
+
++
--
-
IT: I is very low on the 1st fault
Explosion
+
++
--
-
IT: I is very low on the 1st fault
Availability
+
++
+
+
Further to the first fault
Maintenability
+
++
-
-
Preventive maintenance
Reliability of the
installation
++
++
-
+
Small I fault (damage-electrodynamic forces)
Need a permanent insulation module/system
Difficult to implement on big networks
Some technical difficulties
Easy implementation
+
-
++
+
Cost
+
-
++
+
Need a permanent insulation module/system
And a transformer per sub-network
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Indirect contact and insulation fault (TT)
230V
Ph
CB
N
Ph
R1
< 10
RCD
30mA / 10mA
R2
< 10
1K
Defect
UB
R2
U0
Hypothesis: R1 = R2 = 10 
U body: UB = 230 * R2/(R1+R2) = 115 V
I body: Ib = 115V / 1K = 115 mA (high risk over 30mA)
Fault current: 230V / 20 = 11.5A
Ground
R1
N
This current is not high enough to trip the circuit breaker.
This is why RCDs are mandatory in TT; the RCD makes the protection.
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Indirect contact & insulation fault (IT)
230V
Ph
CB
N
R2
< 10
R1
< 1 M
Hypothesis: R1 = 1 M 
U body: : Ub = 230 V * R2/(R1+R2)=230*R2/R1 = 2.3 mV
I body: Ib= Ub /1 k  = 2.3 mV / 1k = 2,3 µA
I body increases with R1 decrease
Fault current IR1 = 230V / 1M = 0.2 mA
1K
Ph
Defect
Ub
R2
No risk after the first fault: no trip is needed.
What happens after a second fault on another phase?
Short circuit so the circuit breaker will open.
It is necessary to detect the first fault.
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
U0
Ground
R1
N
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Limits for an IT earthing network
1 wire:
10 M / km
0.3 µF / km (10.6 K / Km @ 50 Hz)
3 wires * ==> 0.9 µF / Km
(* 3 rather than 4 as one capacitance is
in // with the defect)
Ph
Defect
Uc
RT
U0
Ground
Zc
Uc max = 50V (safety limit)
Uc = U0 * RT/Zc
C max to have Uc < or = to 50V
Cmax = Uc / U0 * RT * 2*pi * f
Cmax = 1 / U0 * 62.8 (for 50Hz)
N
40 µF
4 x 10 µF
Max length according to the voltage
Ph - Ph = 760V ==> Ph - N = 760 / 1.732 = 439V => 36 µF
0.9 µF / Km ==> limit = 40 Km
240V = 66 µF ==> limit = 73 Km (3 phases)
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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IT earthing arrangement: Pros & Cons
●Energy availability - Up-time >>
●Fire and explosion risks
●ED life time
●Preventive and corrective maintenance
But
●Implementation costs
●Network size
●Fault localisation
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Section 3
IT EARTHING APPLICATIONS
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Typical applications in IT arrangement
Some hospital areas
Off-shore
Ships
Safety lighting
Nuclear plants
= mandatory
= prescription / promotion
Availability
Fire
Explosion
Oil & Gaz
Industrial applications
with continuous or
sensitive processes
( furnaces, industrial
robots…)
Airports
(runway lighting, traffic supervision)
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Hospital applications
•Key application driver : patient safety
•Product features for this environment
•AC internal impedance > 100 kOhms
•Test voltage (=injection voltage) <= 25 Vdc
•Injected current <= 1mA,
even under fault conditions
Anaesthetic room
Hospital
•50 kOhms threshold
Hospital
Operating theatre
Hospital
Operating preparation room
Hospital
Operating plaster room
Hospital
Operating recovery room
Hospital
Heart catheterization room
Hospital
Intensive care room
Hospital
Angiographic examination room
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Marine applications
●All vessel types (both commercial
and military) and the whole LV
electrical distribution
●5 to 10 devices par vessel
●Cruise liners, transport ships – car
ferries, containers, navy vessels
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Industry and infrastructure applications
Key application drivers : energy availability and safety
Oil & Gaz - Extraction & refineries
All the process in LV
Cement
LV motors
Steel
Cold or hot mills
Glass
Furnaces. If the furnaces stops, it is dead
Paper
Mill
Aluminium
Electrolysis vat
Chemical
Furnaces. If the furnace stops, it is dead
Mechanics, car makers
Yes
Power generation - Nuclear or thermal
Auxiliary equipement
Power generation - Solar
Solar farm
Food & Beverage
Conveyor
Pharmaceutical industry
Conveyor
Semi-conductor
Various process machines
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Section 4
HOW DOES VIGILOHM WORK?
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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How does Vigilohm work?
● IT earthing arrangement is used to guarantee supply
continuity (energy availability) in an electrical
installation
Protection threshold
Fault threshold
● Requirements of the IT system:
● Continuously monitor the installation insulation by
DC injection or AC injection
● Signal the first fault
● Locate faults (manually or automatically)
● The Vigilohm range of IMDs provide a permanent
insulation monitoring solution
● Thus helping end users to increase process
availability and improving staff and process safety
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Operating diagram
●Vigilohm IMDs are connected to neutral or to a
network phase
IMD connected to neutral
V
V
3
L1
L1
L2
L2
V
L3
IMD
When the first fault occurs,
the IMD detects the
network phase-to-neutral
voltage across its terminals
E95485
E95484
IMD
IMD connected to a phase
L3
V
When the first fault occurs,
the IMD detects the network
phase-to-phase voltage V
across its terminals
Multiple sources > A single Insulation Monitoring Device
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Current injection
● In IT arrangement, because the fault current is very small, and therefore
difficult to measure, the insulation monitoring device (IMD) injects a low
frequency or a DC current. This current can go though the IMD because the
IMD impedance is high at 50Hz (IT) but low for the injected current (equivalent
to a TT).
● The aim is to measure the return current to calculate the system’s impedance.
● This current depends on the leakage impedance of the network to be
monitored.
LF generator
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
Locating insulation faults is done by
tracing the path of a low frequency
current injected at the origin of the
installation.
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What does Vigilohm measure & monitor?
●Insulation resistance
●If the resistance value is under the set-point, an alarm is triggered
●This resistance value is displayed on some modules
●For more advanced modules:
● Insulation resistance and 2 set-points (warning and alarm)
● Leakage capacitance
●Resistance and capacitance are good ways to know the
status of the system
●Allows preventive maintenance
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Why do we measure the network
capacitance?
●Monitoring the C value is essential on large networks since the
C-related impedance can cause these networks to drift towards
a TT arrangement. This configuration would generate a
dangerous voltage contact and a high fault current in case of
earth fault.
●Only Schneider Electric monitors these value.
●Thus, during ED design, it will be highly recommended to limit
network size (long cables).
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Operating principle: DC Injection
●The capacitance of the network is irrelevant when a DC voltage
injection IMD is used to measure the insulation.
●DC voltage injection IMDs can only be used on AC networks
i
i
R network
Vi
Vi
Vs
R network = - Rs and i =
i
Rs
Rs
E95476
C network
Vs
R network =
IMD
Network
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
Rs (Vi - Vs)
Vs
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Operating principle: AC Injection
●The resistance and capacitance of the network are displayed by
measuring the insulation with an AC voltage injection IMD.
●Synchronous demodulation is used to indicate the real and imaginary
parts of Z and therefore to calculate the resistance R and capacitance
C of the network.
i
RS
R network
E95480
Vi
IMD
Network
C network
1
Z = R network //
,
C network x 
network complex impedance
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Different injection methods, different IMDs
● There are two types of permanent insulation monitors that use different
injection methods:
● DC current injection IMD
IM9 / IM9OL
● AC current injection IMD (can be communicating)
IM10 / IM20
IM10 / IM20H
XM200
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
XM300C
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Two Types of monitoring
MV/LV
●On-line insulation monitoring
●IT system for a part or the whole
installation
●IT system for AC or DC
installations
P1
CPI
CPI
●Off-line insulation monitoring
●Load insulation monitoring
CPI
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Multiple configuration options
●Network type : AC / DC
●Injection type : AC / DC
●Injection type : permanent or non permanent
Network type
Injection type
AC
DC
AC
Yes
Yes
DC
Yes
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Section 5
THE VIGILOHM OFFER
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Vigilohm offer
●Level 1 solution – Manual fault location
● Hospital – IM10H, IM20H, HRP
● Marine, Industry & Infrastructures: IM9, IM10, IM20
● Industry / off-line monitoring: IM9OL
●Level 2 solution – Automatic fault location
● XM200, XD3xx
●Level 3 solution – Feeder measurement & communication
● XML3xx, XM300C
● XL3xx, XD308C, XLI / XTU communication interface
●Accessories
● Toroids
● Cardew surge limiter
● ZX impedance
● HV-IM20-1.7 subassembly
● PHT1000 subassembly
● Mobile fault location kit
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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The Vigilohm Offer
LEVEL 1 SOLUTION
MANUAL FAULT LOCATION
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Vigilohm offer : Hospitals
Product features
Vigilohm IM10-H, IM20-H and HRP help ensure patient safety
IM10-H
● Fault detection and signaling
● Insulation resistance value display
IM20-H:
● Fault detection and signaling
● Insulation resistance value display
● Transformer monitoring (current and temperature)
● Modbus communication
● Alarm log
IM10-H / IM20-H
HRP
● Insulation fault remote indicator (audible & visual)
● Electrical fault (transformer overload or circuit breaker tripping ) remote indicator
(audible & visual)
● Insulation daily test
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Vigilohm offer : Hospitals
Key technical specifications
IM10-H / IM20-H
● Standards: IEC 60364-7-10, IEC 61557-8
● Network voltage: up to 230 V ac, 50 or 60 Hz
● Insulation resistance value reading: from 1 kOhm to 1
MOhm
● Minimal fault threshold: 50 kOhms
● Accuracy : 5%
● Auxiliary supply: AC or DC (generally the monitored
network)
HRP:
Hospital remote panel
HRP key technical features:
● Tested with Anios products (anti-bacterial cleaning
product)
● Insulation Monitoring test button
● 24 Vdc auxiliary supply
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Vigilohm offer : Marine, Industry, Infra.
Product features (Online insulation monitoring)
IM9, IM10 and IM20 help ensure process continuity, staff and process safety in IT earthing
network arrangements
IM9
● Fault detection and signaling without display (only for monitoring small AC networks)
● Pre-alarm threshold
IM10:
● Fault detection and signaling with large, intuitive multi-language display
● Insulation resistance value display
IM20:
● Same as IM10 plus
● Leakage capacitance measurement display
● Transformer monitoring (current and temperature)
● Modbus communication
● Alarm log
● Current injection inhibition feature
● Compatible with higher network nominal voltages with the HV subassembly
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Vigilohm offer : Marine, Industry, Infra.
Specific standards for IM9, IM10 and IM20
● IEC 60364-4-41 : Electrical standards in buildings
● IEC 61557-8 : Insulation Monitoring Devices in IT earthing arrangement
● IEC 61557-9 : Equipment for insulation fault location in IT earthing
arrangements
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Vigilohm offer : Marine, Industry, Infra.
IM9 key technical specifications
● Network voltage
● Up to 480 Vac L-L, 50, 60 or 400 Hz
● Two alarm thresholds
● Pre-alarm: from 2,5 to 500 kOhms
● Alarm: from 1 to 250 kOhms
● 1 changeover contact in case of earth fault
● Auxiliary supply:
● 110 to 415 Vac (+/- 15%)
● 125 to 250 Vdc (+/-15%)
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
IM9
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Vigilohm offer : Marine, Industry, Infra.
IM10 / IM20 key technical specifications
● Network voltage:
● Up to 480 Vac L-L, 50, 60 or 400 Hz
● Up to 345 Vdc
● Up to 1700 Vac L-L with subassembly (IM20)
● Range for leakage capacitance readings:
● 0,1 – 40 µF (IM20) – Impedance display
● 2 thresholds
● Pre-alarm: from 1 kOhm to 1 Mohms
● Alarm: from 0,5 kOhm to 500 kOhms
● 1 changeover contact in case of earth fault
● Auxiliary supply:
● 110 to 415 Vac (+/-15%) / 125 to 250 Vdc (+/-15%)
● Multi-language support for English, French, Spanish,
Italian, Portuguese, Chinese, and Russian
● DNV approval for the Marine market
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
IM10 / IM20
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Vigilohm offer : Industry
IM9-OL Product features (Offline insulation monitoring)
IM9-OL for insulation monitoring of offline motors (i.e., motors that
are not normally powered, such smoke extractors)
● Functions
● Insulation monitoring with an adjustable threshold
● Motor start inhibition with a second threshold
● Ability to authorize start, even in case of low insulation
● Fault detection and signaling in all motor earthing
arrangements (TN, TT, IT)
● Standards
● Product: IEC 61557-8, Safety : 61010-1
● Features
● Motor nominal voltage : up to 690 V
● Pre-alarm threshold: from 0,5 to 10 Mohms
● Motor inhibition threshold: from 0,25 to 2 Mohms
● Suitable for 1 ph or 3 ph motors, including star/delta start
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
IM9-OL
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The Vigilohm Offer
LEVEL 2 SOLUTION
AUTOMATIC FAULT LOCATION
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Vigilohm offer - automatic fault location
●Ideal for medium or large networks with a
significant number of feeders
●Typical architecture
● XM200 IMD that displays global R and C
● XD312 / XD301 automatic fault locators
●The customer typically uses a manual fault
locating kit for the downstream distribution
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Automatic fault location – strong points
●Global network monitoring (R and C)
●Unlimited number of locators
●No link between the XM200 (injector)
and XD devices (locators)
●Transient fault management on
both XM200 and XD devices
●Both XD312 and XD301
locate the fault
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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XM200 key technical features
●Network voltage:
●up to 760 Vac (injection connected to neutral)
●up to 440 Vac (injection connected to phase)
●up to 500 Vdc
●For higher voltages, please use XM300C.
●Range for insulation resistance readings:
●from 0,1 to 999 kOhms
●Range for leakage capacitance readings:
●from 0,1 to 199 µF
●2 thresholds (pre-alarm and alarm) and 2
output contacts
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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XD301 / XD312 key technical features
●Immediate identification of the faulty
feeder
●Network type:
●low voltage, AC (45 to 400 Hz) or DC
●Operating threshold:
●2,5 mA @ 2,5 Hz
●Polling time:
●20 s per channel
●1 output contact
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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The Vigilohm Offer
LEVEL 3 SOLUTION
FEEDER MEASUREMENT & COMMUNICATION
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Vigilohm offer - measurement per feeder
and communication
●Ideal for medium or large network
monitoring, especially for control
networks with multiple incomers and
feeders
●R and C measurement per feeder is
prescribed
●The customer wants to monitor
insulation from the supervisory system
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Level 3 solution - architecture overview
XM300C
XML308
ION Entreprise
XL308
XML316
XD308C
XL316
Supervision
Vigilohm bus
XLI300/XTU300
Modbus /
Serial communication
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Level 3 solution – typical architectures
● Typical architecture
● XML308 / XML316 IMDs for global network monitoring with feeder
measurement up to 8/16 feeders
● XL308 / XL316 automatic fault locators incl. feeder measurement
● XLI / XTU communication interfaces
● This architecture suits large network management, up to 192 feeders.
● Additionally there could be a few XD301 or XD312 fault locators in the
downstream distribution
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Level 3 solution – strong points
●IT distribution networks
●AC, DC, mixed
●Non linear loads: rectifiers, static
converters, variable speed drives
●Measurement and monitoring of network
insulation
●R and C measurement, globally and on
the most critical feeders
●Display and supervision of measurements
and setting parameters
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
XM300C
XML308/316
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Level 3 solution – main technical features
●Injection of low frequency AC voltage
between the network and earth
●Measurement of R and C
Ic
I
Ir
U
●2 settings:
● adjustable pre-alarm and alarm thresholds
● 1 adjustable feeder threshold
●2 output relays
●Measurement:
● from 0.1 to 999 k / from 0,1 to 1000 µF
●Network voltage :
● from 440 Vac to 1700 Vac depending on the
selected injection cable and a possible interface from
500 Vdc to 1200 Vdc
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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The Vigilohm Offer
ACCESSORIES
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Toroids for automatic fault detection
●A single range of toroids for XD and XL devices
●Open or split core
●
●
●
●
●
●
GA 300
SA 200
MA 120
IA 80
PA 50
TA 30
● POA
● GOA
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Cardew surge limiter
●Protects the electrical distribution – including the
insulation monitor - against overvoltages
●Mandatory with NF C 63-150 (French standard)
/ not mandatory to comply with IEC 60364
standard.
●To be connected the closest to MV / LV
transformer – between neutral and earth or
phase and earth.
●Not necessary for LV / LV transformer
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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ZX impedance
●Reduces voltage differences between network and
earth
●Impedance value:
● 1,5 kΩ at 50 Hz
● 1 MΩ at 2,5 Hz / DC
● U < 500 V AC
MV/L
V
IMD
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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HV-IM20-1.7 subassembly
●Makes Vigilohm IM20 IMD compatible with
higher network nominal voltages:
●415 Vac < U < 1000 Vac for phase
connection
●415 Vac < U < 1700 Vac for neutral
connection
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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PHT1000 subassembly
●Reduce the input voltage for IMDs like
XM300c and XML with the following network
voltages
● 440 < U < 1000 Vac for phase connection
● 760 < U < 1700 Vac for neutral connection
● 500 < U < 1200 Vdc for DC networks
MV/LV
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Mobile fault locating kit
●This equipment can be used on DC or AC
networks.
●It includes:
●A 2.5 Hz generator: XGR
●a 2.5 Hz receiver: XRM
●Three probes: P15 - P50 - P100
Schneider Electric - Energy Management Solutions – Vigilohm offer presentation – Patrick Henry – January 2011
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Mobile fault locating kit
●Fault locating principle to be used
when the IMD detected a fault:
●Calibrate the receiver
●Locate the faulty feeder
IMD
or
XGR
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Section 6
STRONG POINTS
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Strong points of the Vigilohm offer
Technical features
●The new offer re-uses Vigilohm injection principle and improves it
●Customer benefits: better accuracy and behavior with non linear loads
●Wide range of insulation resistance measurement and display
●Possibility of leakage capacitance measurement (IM20)
Implementation
●Very easy to install – Din rail or flush mount
Operation
●Very intuitive human man interface
●Multi-language LCD display
● Supports English, French, Spanish, Italian, German, Portuguese, Russian and
Chinese
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Section 7
CONCLUSION
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Conclusion
●Vigilohm range is Schneider Electric’s insulation
monitoring solution for ungrounded neutral networks
●For process continuity in case of earth fault
●For staff and process safety
●For maintenance optimisation
●From single motor insulation monitoring to the most
advanced network insulation monitoring
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