Deif Multi Differential Relay 2 User manual

DEIF A/S · Frisenborgvej 33 · DK-7800 Skive · Tel.: [phone] · Fax: [phone] · [e-mail] · www.deif.com
DEIF A/S · Frisenborgvej 33 · DK-7800 Skive · Tel.: [phone] · Fax: [phone] · [e-mail] · www.deif.com
DEIF A/S · Frisenborgvej 33 · DK-7800 Skive · Tel.: [phone] · Fax: [phone] · [e-mail] · www.deif.com
DESIGNER'S REFERENCE HANDBOOK
Multi Differential Relay, MDR-2
● Differential current protection,
generator or electric motor
Document no.: 4189340300I
SW version:

1. General information
1.1. Warnings, legal information and safety.................................................................................................. 4
1.1.1. Warnings and notes ......................................................................................................................4
1.1.2. Legal information and disclaimer ..................................................................................................4
1.1.3. Safety issues ................................................................................................................................ 4
1.1.4. Electrostatic discharge awareness ............................................................................................... 4
1.1.5. Factory settings ............................................................................................................................ 5
1.2. About the Designer's Reference Handbook........................................................................................... 5
1.2.1. General purpose ...........................................................................................................................5
1.2.2. Intended users ..............................................................................................................................5
1.2.3. Contents and overall structure ......................................................................................................5
2. Preface
2.1. General data...........................................................................................................................................6
2.1.1. Technical specifications ................................................................................................................ 6
3. Standard functions
3.1. Differential current detection.................................................................................................................. 7
3.1.1. Differential current tripping/warning ..............................................................................................8
3.2. Display....................................................................................................................................................8
3.2.1. Panel cutout for display .............................................................................................................. 10
3.2.2. Unit dimensions in mm (inches)...................................................................................................11
4. Hardware
4.1. Terminals and board slot positions.......................................................................................................12
4.2. Base unit LED indicators...................................................................................................................... 12
4.3. Terminal strip overview.........................................................................................................................14
4.3.1. Slots #1, #2, #5 and #6 ...............................................................................................................14
4.3.2. Slots #3, #4, #7 and #8 ...............................................................................................................15
4.4. Terminal strip, explanation....................................................................................................................15
4.4.1. Slot #1, power supply and digital I/O .......................................................................................... 16
4.4.2. Slot #7, AC current measurement .............................................................................................. 17
5. Wiring diagrams
5.1. Coupling and connection......................................................................................................................18
5.1.1. AC current measurements, star coupling.................................................................................... 18
5.1.2. AC current measurements, delta coupling ..................................................................................19
5.1.3. DC connections, inputs and outputs ...........................................................................................20
6. Parameter programming
6.1. Programming........................................................................................................................................21
6.1.1. About programming..................................................................................................................... 21
6.1.2. Parameter setting method in display .......................................................................................... 21
6.2. Differential current................................................................................................................................21
6.2.1. Settings .......................................................................................................................................21
6.2.2. Warning (curve 1) ....................................................................................................................... 22
6.2.3. Trip (curve 2) .............................................................................................................................. 22
6.2.4. Trip (fixed trip value) ................................................................................................................... 23
6.2.5. Use of relay outputs ....................................................................................................................23
6.3. Other settings.......................................................................................................................................23
6.3.1. Status LED ..................................................................................................................................23
6.3.2. Auto acknowledgement of alarms ...............................................................................................23
6.3.3. Service menu ..............................................................................................................................24
6.4. Nominal settings...................................................................................................................................24
6.4.1. Nominal current .......................................................................................................................... 24
6.4.2. Current transformers ...................................................................................................................24
6.4.3. Date and time (internal clock) .....................................................................................................25
6.4.4. Power supply (battery) under-voltage alarm ...............................................................................25
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6.4.5. User password for programming via display................................................................................25
6.4.6. Language selection .....................................................................................................................26
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1. General information
1.1 Warnings, legal information and safety
1.1.1 Warnings and notes
Throughout this document, a number of warnings and notes with helpful user information will be presented.
To ensure that these are noticed, they will be highlighted as follows in order to separate them from the gener-
al text.
Warnings
Warnings indicate a potentially dangerous situation, which could result in death, personal in-
jury or damaged equipment, if certain guidelines are not followed.
Notes
Notes provide general information, which will be helpful for the reader to bear in mind.
1.1.2 Legal information and disclaimer
DEIF takes no responsibility for installation or operation of the generator set. If there is any doubt about how
to install or operate the engine/generator controlled by the Multi-line 2 unit, the company responsible for the
installation or the operation of the set must be contacted.
The Multi-line 2 unit is not to be opened by unauthorised personnel. If opened anyway, the war-
ranty will be lost.
Disclaimer
DEIF A/S reserves the right to change any of the contents of this document without prior notice.
The English version of this document always contains the most recent and up-to-date information about the
product. DEIF does not take responsibility for the accuracy of translations, and translations might not be up-
dated at the same time as the English document. If there is a discrepancy, the English version prevails.
1.1.3 Safety issues
Installing and operating the Multi-line 2 unit may imply work with dangerous currents and voltages. Therefore,
the installation should only be carried out by authorised personnel who understand the risks involved in work-
ing with live electrical equipment.
Be aware of the hazardous live currents and voltages. Do not touch any AC measurement in-
puts as this could lead to injury or death.
1.1.4 Electrostatic discharge awareness
Sufficient care must be taken to protect the terminal against static discharges during the installation. Once the
unit is installed and connected, these precautions are no longer necessary.
MDR-2 DRH 4189340300 UK General information
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1.1.5 Factory settings
The Multi-line 2 unit is delivered from factory with certain factory settings. These are based on average values
and are not necessarily the correct settings for matching the engine/generator set in question. Precautions
must be taken to check the settings before running the engine/generator set.
1.2 About the Designer's Reference Handbook
1.2.1 General purpose
This Designer's Reference Handbook mainly includes functional descriptions, presentation of display unit and
menu structure, information about the PID controller, the procedure for parameter setup and reference to pa-
rameter lists.
The general purpose of this document is to provide useful overall information about the functionality of the
unit and its applications. This document also offers the user the information he needs in order to successfully
set up the parameters needed in his specific application.
Please make sure to read this document before starting to work with the Multi-line 2 unit and
the genset to be controlled. Failure to do this could result in human injury or damage to the
equipment.
1.2.2 Intended users
This Designer's Reference Handbook is mainly intended for the panel builder designer in charge. On the ba-
sis of this document, the panel builder designer will give the electrician the information he needs in order to
install the Multi-line 2 unit, for example detailed electrical drawings. In some cases, the electrician may use
these installation instructions himself.
1.2.3 Contents and overall structure
This document is divided into chapters, and in order to make the structure simple and easy to use, each
chapter will begin from the top of a new page.
MDR-2 DRH 4189340300 UK General information
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2. Preface
2.1 General data
2.1.1 Technical specifications
Accuracy 0.1 × IN < I < IN: 1 % of IN
IN < I: 1 % of I
(IN = 1 A or 5 A, I = measured value, secondary side of CT)
Operating temper-
ature
-25 to 70 °C
Aux. supply 12/24 V DC nominal (8 to 36 V DC operational), max. 11 W consumption
0 V DC for 10 ms when coming from at least 24 V DC
Frequency 30 to 70 Hz
Measuring current From current transformers …/1 A or …/5 A. Consumption max. 0.3 VA per phase.
Digital inputs Input voltage 6 to 32 V DC. Impedance 2.4 kΩ, bi-directional.
Relay outputs 250 V/8 A or 24 V DC/1 A. Refer to actual description of I/Os.
Safety To EN 61010-1 installation category (over-voltage category) III, 600 V, pollution de-
gree 2
Galvanic separa-
tion
Between AC current and other I/Os: 3250 V AC – 50 Hz – 1 min.
EMC/CE According to EN-61000-1/2/3/4 IEC 255-3
Material All plastic parts are self-extinguishing to UL94 (V1)
Climate HSE, to DIN 40040
Connections AC currents: 4 mm2 multi-stranded
Others: 2.5 mm2 multi-stranded
Display: 9-pin SUB-D female
Service port: 9-pin SUB-D male
Response times Response times are measured from end of period of measured current cycle
Differential current: <50 ms
Protection Case: IP40
Terminals: IP20
Operator panel (option): IP40 (IP54 when mounted with gasket)
To IEC 529 and EM 60529
Mounting Base-mounted with six screws or DIN-rail mounted
Weight Approx. 1 kg incl. packing
MDR-2 DRH 4189340300 UK Preface
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3. Standard functions
3.1 Differential current detection
The MDR-2 is primarily intended for protection of a generator or an electric motor against current leaks. This
is accomplished by measuring the current on each side of the generator/motor and comparing these. If there
is a difference (differential current), a leak is detected.
The differential current detection takes place in each phase.
So, the differential current detection is based on:
Primary side
(I1)
Secondary side
(I2)
L1 compared to L1
L2 compared to L2
L3 compared to L3
MDR-2
Generator/Motor Step up transformer
(option C4)
MDR-2 DRH 4189340300 UK Standard functions
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3.1.1 Differential current tripping/warning
The pickup characteristics are defined using customisable curves.
100% 200% 300% 400% 500%
Trip at fixed value 100%
Trip at fixed value 85%
Upper limit
Lower limit
Trip Y1T
Warn. Y1W
Trip Y2T
Warn. Y2W
SP-X1
0%
50%
100%
Adjustable warning curve
Adjustable trip curve
Id
In
Is
In
The trip/warning pickup characteristics are shown above. They are a function of:
● Stabilisation current Is in relation to nominal current In (X-axis)
● Differential current Id in relation to nominal current In (Y-axis)
The lines marked "UPPER LIMIT" and "LOWER LIMIT" are the limits for the curves.
Max. values are:
● X1: 500 %
● Y1: 45 %
● Y2: 95 %
Min. values are:
● X1: 50 %
● Y1: 5 %
● Y2: 25 %
There are two sets of adjustable settings:
● Warning, set points Y1W and Y2W (can be disabled)
● Trip, set points SP-X1, Y1T and Y2T
The warning curve shares the SP-X1 value with the trip curve.
Both settings are with adjustable time delay (0.01 to 2.00 sec.)
3.2 Display
Front-mounted display with push-buttons and display of all measured values and alarms.
The following values can be read:
MDR-2 DRH 4189340300 UK Standard functions
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● Phase currents L1, L2, L3 primary side (I1)
● Phase currents L1, L2, L3 secondary side (I2)
● Phase currents are presented in actual current and % of nominal value
● Differential currents are presented in actual current and % of nominal value
● Stabilisation currents (average of I1 and I2 values, displayed for each phase)
The alarm and event log list can be read.
All parameter settings can be made via the display.
Alarm
Alarm
INFO
JUMP
Multi Differential Relay
multi-line MDR
Power
Self check ok
Alarm Inh.
VIEW
LOG
BACK
SEL
389A 389A 389A
PROT SETUP
PROT
Fail
Comm.
The push-buttons are:
INFO: Displays the alarm list. If no active alarms are present, the list will be empty.
JUMP: Enables the user to jump directly to a specific setting instead of entering via the menu system.
VIEW: Scrolls the readings in the upper line of the display (in the protection setting menu).
LOG: Enters the log list. The log list contains max. 150 historical events/alarms, all with time and date.
SEL: Selects the chosen menu/value (enter function).
Up/down value buttons. Used for changing of settings, and so on.
Move buttons. Moves the cursor (in the lower line of the display) during manoeuvring in the me-
nus.
MDR-2 DRH 4189340300 UK Standard functions
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3.2.1 Panel cutout for display
61.0 24.0
24.0 66.0
113.0
174.0
33.030.0
33.0 10.0
6x Ø4.5
Required space 220x115 mm
Gasket outer 183x77 mm
Screws for fastening: 3.5 mm self-cutting threads. Max depth in display 9 mm
MDR-2 DRH 4189340300 UK Standard functions
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3.2.2 Unit dimensions in mm (inches)
Display
20.0 (0.787)
230 (9.055)
215(8.465)
115 (4.528)
15 (0.59)
165 (6.486)
115 (4.528)
144 (5.669)
220 (8.661)
115 (4.528)
MDR-2 DRH 4189340300 UK Standard functions
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4. Hardware
4.1 Terminals and board slot positions
The Multi-line 2 housing is divided into board slot positions, some of which are standard (non-changeable)
and some intended for options. The MDR-2 unit is divided like this:
Slot Slot type Terminal MDR-2
Slot #1 Power supply and digital I/O 1-28 Standard
Slot #2 Not used 29-36
Slot #3 Not used 37-64
Slot #4 Not used 65-72
Slot #5 Not used 84-89
Slot #6 Not used 90-97
Slot #7 AC current measurement 98-109 Standard
Slot #8 Not used 126-133
An overview of the terminals can be seen below. The slots are positioned in the unit as follows (seen from the
top of the unit):
I>> I> Id
R1 R2 R3 R4
Sevice port Display
12
3 4
56
78
4.2 Base unit LED indicators
There are 11 LED indicators on the front of the base unit. The indications are:
Power: DC power is on
Self check OK: The microprocessor watchdog status is OK. This relates to the "Status" relay output (nor-
mally energised)
Comm.: Communication status: not used
I>>: Option: short-circuit trip indication
I>: Option: over-current trip indication
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Id: There are two LEDs. The left one is differential current warning, the right one is differential
current trip
R1, R2, R3, R4: Green by deactivated relay output, red by activated relay output
NOTE:
I>> and I> share the same LEDs.
I>>, I> and Id LEDs are turned off if the function is not chosen or inhibited.
I>>, I> and Id LEDs can indicate status (yellow light) if the function is turned ON. Refer to the paragraph "Sta-
tus LED".
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4.3 Terminal strip overview
4.3.1 Slots #1, #2, #5 and #6
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4.3.2 Slots #3, #4, #7 and #8
4.4 Terminal strip, explanation
For the relay outputs, the following terms will be used:
NO means Normally Open
NC means Normally Closed
Com. means common terminal for the relay in question
MDR-2 DRH 4189340300 UK Hardware
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4.4.1 Slot #1, power supply and digital I/O
Standard board (always needed)
Terminal Function Technical data Description
1 +24 V DC 24 V DC +20/-30 % Power supply
2 0 V DC
3 NC Status relay
24 V DC/1 A
Normally closed relay, processor/power supply status su-
pervision
4 Com.
5 NO Relay 1
250 V AC/8 A
Configurable relay
6 Com.
7 NC
8 NO Relay 2
250 V AC/8 A
Configurable relay
9 Com.
10 NC
11 NO Relay 3
250 V AC/8 A
Configurable relay
12 Com.
13 NC
14 NO Relay 4
250 V AC/8 A
Configurable relay
15 Com.
16 NC
17 NO Relay 5
250 V AC/8 A
Configurable relay
18 Com.
19 NC
20 Not used
21
22
23 Digital input 1 Optocoupler Id trip inhibit (differential current trip inhibit)
24 Digital input 2 Optocoupler Alarm acknowledge
25 Digital input 3 Optocoupler
26 Digital input 4 Optocoupler
27 Digital input 5 Optocoupler
28 Com. Common Common for terminals 23 to 27
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4.4.2 Slot #7, AC current measurement
Terminal Function Technical data Description
98 S1 (k) I 1L1 Primary side current measurements (I1)
99 S2 (l)
100 S1 (k) I 1L2
101 S2 (l)
102 S1 (k) I 1L3
103 S2 (l)
104 S1 (k) I 2L1 Secondary side current measurements (I2)
105 S2 (l)
106 S1 (k) I 2L2
107 S2 (l)
108 S1 (k) I 2L3
109 S2 (l)
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5. Wiring diagrams
5.1 Coupling and connection
5.1.1 AC current measurements, star coupling
The ground connections can be connected to S1 or S2 as needed.
MDR-2 DRH 4189340300 UK Wiring diagrams
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5.1.2 AC current measurements, delta coupling
MDR-2
S2(l)
S1(k)
AC current
measurement
primary side (I1)
AC current
measurement
secondary side (I2)
L1 L2 L3
109
108 I2 L3
S2
S1
107
106 I2 L2
S2
S1
105
104 I2 L1
S2
S1
103
102 I1 L3
S2
S1
101
100 I1 L2
S2
S1
99
98 I1 L1
S2
S1
S2(l)
S1(k)
S2(l)
S1(k)
S2(l)
S1(k)
S2(l)
S1(k)
S2(l)
S1(k)
GENERATOR/
MOTOR
The nominal current setting is to be the name plate current divided by √3.
The ground connections can be connected to S1 or S2 as needed.
MDR-2 DRH 4189340300 UK Wiring diagrams
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5.1.3 DC connections, inputs and outputs
Alarms can be acknowledged by:
1) Using the display
2) Activating the alarm acknowledge input
3) Auto acknowledge. The use of this is selected in the setup menus.
MDR-2 DRH 4189340300 UK Wiring diagrams
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