ZIV 7IRD-A User manual
Instructions Manual for 7IRD-A/J/M Models
M7IRDA2003Iv00
REV. 00 - March, 2020 ©ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020
7IRD-A/J/M
Distribution
Protection & Control
Terminal
I M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020
Table of Contents
1.Description ........................................................................................................... 1-1
1.1General Overview .................................................................................................. 1-2
1.2Protection Subsystem Functions ........................................................................... 1-3
1.2.1Non-Directional Overcurrent Protection 3-Phase and Ground .............................. 1-3
1.2.2Recloser (7IRD-A/J Models) .................................................................................. 1-3
1.2.3Breaker Failure Protection ..................................................................................... 1-3
1.2.4Open Phase Protection .......................................................................................... 1-3
1.2.5Residual Current Detection (Neutral Unbalance Unit) ........................................... 1-3
1.3Control Subsystem Functions ................................................................................ 1-4
1.3.1Local Control and Status Indication of all Bay Elements ....................................... 1-4
1.3.2Local Recloser Control (7IRD-A/J Models) ............................................................ 1-4
1.3.3Measurement Presentation.................................................................................... 1-4
1.3.4Presentation of Local Alarms as Conventional Alarms ......................................... 1-4
1.3.5Indication of Digital Inputs / Outputs ...................................................................... 1-4
1.3.6Indication of Auxiliary Inputs / Outputs States and Protection LEDs ..................... 1-4
1.4Additional Functions .............................................................................................. 1-5
1.5Model Selection ..................................................................................................... 1-7
2.Technical Data ..................................................................................................... 2-1
2.1Power Supply Voltage ........................................................................................... 2-2
2.2Protection Subsystem ............................................................................................ 2-2
2.2.1Power Supply Burden ............................................................................................ 2-2
2.2.2Current Analog Inputs ............................................................................................ 2-2
2.2.3Measurement Accuracy ......................................................................................... 2-2
2.2.4Accuracy of Time Measurement ............................................................................ 2-2
2.2.5Repeatability .......................................................................................................... 2-3
2.2.6Transient Overreach .............................................................................................. 2-3
2.2.7Status Contact Inputs ............................................................................................ 2-3
2.2.8Trip and Close Outputs .......................................................................................... 2-4
2.2.9Auxiliary Contact Outputs ...................................................................................... 2-4
2.3Control Subsystem ................................................................................................ 2-5
2.3.1Power Supply Burden ............................................................................................ 2-5
2.3.2Current Analog Inputs (Measurement Circuit Board) ............................................ 2-5
2.3.3Voltage Inputs (Measurement Circuit Board) ........................................................ 2-5
2.3.4Measurement Accuracy (Measurement Circuit Board) ......................................... 2-5
2.3.5Accuracy of Time Measurement ............................................................................ 2-5
2.3.6Status Contact Inputs ............................................................................................ 2-6
2.3.7Double Contact Outputs (SD1 and SD2) ............................................................... 2-6
2.3.8Simple Contact Outputs ......................................................................................... 2-6
2.3.9Transducer Input/Outputs ...................................................................................... 2-6
2.4Communications Link ............................................................................................ 2-7
3.Standards and Type Test .................................................................................... 3-1
3.1Insulation................................................................................................................ 3-2
3.2Electromagnetic Compatibility ............................................................................... 3-2
3.3Environmental Test ................................................................................................ 3-3
3.4Power Supply ......................................................................................................... 3-3
3.5Mechanical Test ..................................................................................................... 3-3
4.Physical Architecture .......................................................................................... 4-1
4.1General .................................................................................................................. 4-2
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4.2Protection and Control Interconnection ................................................................. 4-3
4.3Dimensions ............................................................................................................ 4-3
4.4Connection Elements ............................................................................................. 4-4
4.4.1Terminal Connectors and Connector Blocks ......................................................... 4-4
4.4.2Removing of Printed Circuit Boards (Non Self-shorting) ....................................... 4-4
5.Settings ................................................................................................................. 5-1
5.1Protection Subsystem Settings .............................................................................. 5-2
5.1.1Configuration Settings ............................................................................................ 5-2
5.1.2General Settings .................................................................................................... 5-2
5.1.3Protection Settings ................................................................................................. 5-3
5.1.4Recloser Settings (7IRD-A/J Models) .................................................................... 5-4
5.1.5Logic Settings......................................................................................................... 5-6
5.1.6Breaker Monitoring Settings ................................................................................... 5-7
5.1.7Metering History Log .............................................................................................. 5-7
5.1.8Oscillographic Recording (Optional) ...................................................................... 5-8
5.2Control Subsystem Settings ................................................................................... 5-9
5.2.1Configuration Settings ............................................................................................ 5-9
5.2.2General Settings .................................................................................................... 5-9
5.2.3Time Settings ....................................................................................................... 5-10
5.2.4Logic Settings....................................................................................................... 5-10
5.2.5Analogic Settings ................................................................................................. 5-10
6.Description of Operation of Protection Subsystem ......................................... 6-1
6.1Overcurrent Elements ............................................................................................ 6-3
6.1.1Time Elements ....................................................................................................... 6-3
6.1.1.aTime/ Current Characteristics ................................................................................ 6-4
6.1.2Instantaneous Elements ........................................................................................ 6-7
6.1.3Overcurrent Units Block Diagrams......................................................................... 6-7
6.1.4Torque Control (Pickup Blocking Enable) .............................................................. 6-8
6.1.5Trip Blocking and Time Delay Disable ................................................................... 6-9
6.2Breaker Failure....................................................................................................... 6-9
6.3Open Phase Element ........................................................................................... 6-10
6.4Residual Current Element .................................................................................... 6-11
6.5General Settings .................................................................................................. 6-12
6.6Recloser (7IRD-A/J Models) ................................................................................ 6-13
6.6.1Reclose Sequence ............................................................................................... 6-13
6.6.2Recloser Lockout ................................................................................................. 6-17
6.6.3Manual Close ....................................................................................................... 6-17
6.6.4Manual and External Blocking ............................................................................. 6-18
6.6.5Definite Trip .......................................................................................................... 6-19
6.6.6Recloser Not in Service ....................................................................................... 6-19
6.6.7Reclose Counter .................................................................................................. 6-19
6.6.8Recloser and Trip Control Masks......................................................................... 6-19
6.7Logic ..................................................................................................................... 6-21
6.7.1Trip Seal-In ........................................................................................................... 6-21
6.7.2Breaker Open and Breaker Close Failure Time ................................................... 6-21
6.7.3Manual Closing through Recloser (7IRD-A/J Models) ......................................... 6-21
6.8Trip and Close Coil Circuit Supervision ............................................................... 6-22
6.8.1Trip Coil Circuit..................................................................................................... 6-23
6.8.2Close Coil Circuit ................................................................................................. 6-23
6.8.3Trip/Close Coil Circuit Supervision Input Programming ...................................... 6-24
6.8.4Trip/Close Output Supervision ............................................................................. 6-24
6.9Breaker Monitoring ............................................................................................... 6-25
6.9.1Excessive Number of Trips .................................................................................. 6-25
6.10Change Settings Group ....................................................................................... 6-26
6.11Event Record ....................................................................................................... 6-27
6.12Fault Reports ........................................................................................................ 6-32
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6.13Metering History Log ............................................................................................ 6-33
6.14Oscillographic Register (Optional) ....................................................................... 6-34
6.15Inputs, Outputs and LED Targets ........................................................................ 6-36
6.15.1Inputs ................................................................................................................... 6-36
6.15.2Auxiliary Outputs and Trip Contact Outputs ........................................................ 6-38
6.15.3LED Targets ......................................................................................................... 6-43
6.16Communications .................................................................................................. 6-44
6.16.1Communications Settings .................................................................................... 6-44
6.16.2Communications Types ....................................................................................... 6-44
6.16.3Communication with the Unit ............................................................................... 6-44
6.17Alarm Codes ........................................................................................................ 6-45
7.Description of Operation of the Control Subsystem ....................................... 7-1
7.1Operational Characteristics ................................................................................... 7-2
7.2Control Unit ............................................................................................................ 7-3
7.2.1Elements of the Control Subsystem ...................................................................... 7-6
7.2.2Inputting Data to the Control Unit .......................................................................... 7-7
7.2.2.aInputs through Communications ............................................................................ 7-7
7.2.2.bInputs from the Protection Subsystem ................................................................... 7-8
7.2.2.cPhysical Inputs ....................................................................................................... 7-8
7.2.2.dHMI Inputs (control HMI) ........................................................................................ 7-9
7.2.3Outputting Data from the Control Unit ................................................................... 7-9
7.2.3.aOutputs through Communications ......................................................................... 7-9
7.2.3.bSignals sent to the Protection Subsystem ............................................................. 7-9
7.2.3.cPhysical Outputs .................................................................................................. 7-10
7.2.3.dHMI Outputs (control HMI) ................................................................................... 7-10
8.Alphanumeric Keypad and Display ................................................................... 8-1
8.1Alphanumeric Display and Keypad ........................................................................ 8-2
8.2Keys, Functions and Operation Modes ................................................................. 8-3
8.3Access to Functions Using Key F2 ........................................................................ 8-6
8.3.1Last Trip Indication and Recloser Status ............................................................... 8-6
8.3.2Screen Sequences Using F2 ................................................................................. 8-7
8.4Function Access Using the Keypad ....................................................................... 8-9
8.5Control Function Access ...................................................................................... 8-22
9.Local Interface: Graphic Display ........................................................................ 9-1
9.1General .................................................................................................................. 9-2
9.2Symbols Associated with the Graphic Display ...................................................... 9-3
9.3Accessing the Information ..................................................................................... 9-6
9.3.1Alarm Panel ........................................................................................................... 9-7
9.3.2Information about the State of Inputs/Outputs and Active LEDs ........................... 9-8
9.3.3Information about the Indication of Measurements ............................................... 9-8
9.3.4Date and Time Information .................................................................................... 9-9
9.4Control Function Operations ................................................................................ 9-10
9.4.1General Procedure for Command Execution ....................................................... 9-10
9.4.2Procedure for Opening/Closing Breakers and Disconnecting Switches ............. 9-11
9.4.3Procedure for Placing a Breaker in Discharge .................................................... 9-12
9.4.4Procedure for Operating on Logic Devices .......................................................... 9-13
9.4.5Procedure for Managing Alarms .......................................................................... 9-13
10.Receiving Tests ................................................................................................. 10-1
10.1General ................................................................................................................ 10-2
10.1.1Accuracy .............................................................................................................. 10-2
10.2Preliminary Inspection ......................................................................................... 10-3
10.3Isolation Test ....................................................................................................... 10-3
10.4Power Supply Test ............................................................................................... 10-3
10.5Protection Subsystem Reception Tests ............................................................... 10-4
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© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020 IV
10.5.1Metering Tests ..................................................................................................... 10-4
10.5.2Phase and Ground Current Test .......................................................................... 10-4
10.5.3Open Phase Test ................................................................................................. 10-6
10.5.4Residual Current Test .......................................................................................... 10-6
10.5.5Breaker Failure Test ............................................................................................ 10-6
10.5.6Recloser Test (7IRD-A/J Models) ........................................................................ 10-7
10.5.7Trip/Close Coil Circuit Supervision Input Test ..................................................... 10-8
10.6Control Subsystem Receiving Tests .................................................................... 10-8
10.6.1Test Configuration ................................................................................................ 10-8
10.6.2Digital Inputs Test ................................................................................................ 10-9
10.6.3Digital Outputs and LEDs Test ........................................................................... 10-10
10.6.4Metering Test ..................................................................................................... 10-10
10.7Communication Test .......................................................................................... 10-11
10.8Installation .......................................................................................................... 10-12
10.8.1Location .............................................................................................................. 10-12
10.8.2Connection ......................................................................................................... 10-12
A.PROCOME 3.0 Communications Protocol ....................................................... A-1
A.1Settings ................................................................................................................. A-2
A.1.1Configuration Settings ........................................................................................... A-2
A.1.2Logic Settings........................................................................................................ A-2
A.2Description of Operation ....................................................................................... A-3
A.2.1General Settings ................................................................................................... A-3
A.2.2Logic ...................................................................................................................... A-3
A.2.3Event Records....................................................................................................... A-3
A.2.4Fault Report .......................................................................................................... A-4
A.2.5Inputs .................................................................................................................... A-4
A.2.6Communicating with the Unit ................................................................................ A-4
A.3Alphanumeric Keypad and Display ....................................................................... A-5
A.3.1Configuration ......................................................................................................... A-5
A.3.2Settings ................................................................................................................. A-6
A.3.3Accessing the Information ..................................................................................... A-6
B.DNP 3.0 Communications Protocol .................................................................. B-1
B.1Physical Architecture ............................................................................................ B-2
B.2Settings ................................................................................................................. B-2
B.3Description of Operation ....................................................................................... B-3
B.3.1DNP 3.0 Protocol .................................................................................................. B-3
B.3.2Communications ................................................................................................... B-8
B.3.2.aCommunication with the Equipment ..................................................................... B-8
B.4Alphanumeric Keypad and Display ....................................................................... B-8
B.4.1Change Settings ................................................................................................... B-8
B.4.2DNP3.0 Protocol ................................................................................................... B-8
B.4.3Information Access ............................................................................................... B-9
C.Schemes and Drawings ...................................................................................... C-1
D.List of Illustrations and Tables .......................................................................... D-1
D.1List of Figures ........................................................................................................ D-2
D.2List of Tables ......................................................................................................... D-4
1. Description
1.1General Overview ............................................................................................... 1-2
1.2Protection Subsystem Functions ........................................................................ 1-3
1.2.1Non-Directional Overcurrent Protection 3-Phase and Ground ........................... 1-3
1.2.2Recloser (7IRD-A/J Models) ............................................................................... 1-3
1.2.3Breaker Failure Protection .................................................................................. 1-3
1.2.4Open Phase Protection ....................................................................................... 1-3
1.2.5Residual Current Detection (Neutral Unbalance Unit) ........................................ 1-3
1.3Control Subsystem Functions ............................................................................. 1-4
1.3.1Local Control and Status Indication of all Bay Elements .................................... 1-4
1.3.2Local Recloser Control (7IRD-A/J Models) ......................................................... 1-4
1.3.3Measurement Presentation ................................................................................. 1-4
1.3.4Presentation of Local Alarms as Conventional Alarms ....................................... 1-4
1.3.5Indication of Digital Inputs / Outputs ................................................................... 1-4
1.3.6Indication of Auxiliary Inputs / Outputs States and Protection LEDs .................. 1-4
1.4Additional Functions ............................................................................................ 1-5
1.5Model Selection ................................................................................................... 1-7
Chapter 1. Description
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7IRD represents a family of integrateable microprocessor-based terminal units for
line/machine protection.
The 7IRD digital design is based on a powerful microprocessor and organized into models to
provide protection, control and metering functions. The protection provided by the standard
models includes: Complete protection of a given position; Monitoring and Annunciation
(remote and optionally local) of any device associated to that position; Analog values metering
(Current, Voltage, Power, …); Capture of information associated to that position, via digital
inputs; Possibility to perform programmable control functions and local interlockings.
7IRD terminal units can be applied individually or combined with other intelligent electronic
devices (IEDs) to form an integrated system for protecting and controlling medium voltage
lines, transformers, generators and feeders in general.
This instruction manual covers the 7IRD-A, 7IRD-J and 7IRD-M, and particular characteristics
are specified where are relevant.
1.1 General Overview
7IRD terminal equipment provides two different subsystems: protection and control. Both are
inter-communicated so that they can cooperate by information exchange, but always
maintaining separate identities for any kind of action. Main features that can be detailed are:
Devices include independent power supplies for protection and control functions.
Available communication ports are common for protection and control subsystems.
Digital input and output contacts are separated for protection and control functions.
Analog inputs measurement is performed by the protection subsystem thought
independent circuits. There is an option that allows that metering is performed by a
dedicated and specific module.
Chapter 1. Description
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1.2 Protection Subsystem Functions
1.2.1 Non-Directional Overcurrent Protection 3-Phase and Ground
Includes four non-directional overcurrent measuring units (three for Phase Overcurrent
protection and one for Ground). On 7IRD-A and 7IRD-M models each unit is comprised of a
time element and an instantaneous element, with additional temporization adjustable. On 7IRD-
J model each unit is comprised of a time element and two instantaneous elements, with
additional temporization adjustable.
Time elements can be selected with the following types of characteristics: Definite Time,
Inverse, Very Inverse, Extremely Inverse and User Programmable.
Time and instantaneous overcurrent elements for phase and ground can be enabled or disabled
using settings. Three setting groups are provided for selecting alternative pre-established time
and instantaneous overcurrent pickup values and time characteristics (one is active and two are
in reserve).
Phase and ground, timed and instantaneous overcurrent pickup and tripping functions can all be
individually targeted.
1.2.2 Recloser (7IRD-A/J Models)
Reclosing can be separately coordinated with external protection as well as with the protection
contained in the terminal unit. Reclosing sequences for phase faults and ground faults can be
set independently.
Reclosing is selectable up to a maximum of four attempts with independent settings for
Recloser timers (dead or open breaker wait times) and reset times. The reclosing sequence is
controlled by the breaker position and by the reclose initiate signal, which permits reclosing
based on the protective elements which operated to trip the breaker.
The trip elements and reclose attempts enabled during a fault clearing and reclosing sequence
are selectable.
Manual closing can be initiated from the terminal unit using its reclosing output contacts. The
close command in this instance is supervised and controlled in the same way as any
permissible automatic reclosing command following a trip from the protection elements.
1.2.3 Breaker Failure Protection
The terminal unit incorporates breaker failure protection elements which detect the continuation
of phase or ground overcurrent and send trip commands to initiate backup tripping of other
breakers.
1.2.4 Open Phase Protection
This element detects open phase conditions by measuring the negative-sequence to positive-
sequence current ratio. Detection of the open phase enables tripping should the setting
threshold be exceeded.
1.2.5 Residual Current Detection (Neutral Unbalance Unit)
Three-phase systems where loads are not connected phase-to-ground can benefit from this
function. A trip is permitted if zero sequence current, which does not reach minimum phase-to-
ground-fault levels, is detected for a preset period of time. The presence of the aforementioned
current would indicate the existence of an unacceptable current unbalance.
Chapter 1. Description
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7IRD-A/J/M: Distribution Protection & Control Terminal
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1.3 Control Subsystem Functions
Control subsystem is fully configurable. The following functions are available.
1.3.1 Local Control and Status Indication of all Bay Elements
Breaker trip and close operations can be performed through the terminal unit operation keypad.
These operations are always performed following a pre-programmed logic and taking care of
the input signals from the protection subsystem and the equipment’s status (local or remote).
1.3.2 Local Recloser Control (7IRD-A/J Models)
Recloser can be enabled or disabled from the keypad. Before this command is executed
(enable or disable), the logic decides if it is possible or not. If the order is not executed, a
message will appear on the screen and, if it is finally performed, the Recloser’s symbol on the
screen will change to the new status.
1.3.3 Measurement Presentation
The graphic display shows the current, voltage and power measurements performed by the
control subsystem through protection subsystem or optional metering module.
1.3.4 Presentation of Local Alarms as Conventional Alarms
Information referred to alarm signals is also available in the graphic display. One of the screens
displays the alarms processed in the logic, the ones from the protection subsystem and, finally,
the ones directly obtained from the physical input signals.
1.3.5 Indication of Digital Inputs / Outputs
Every digital input/output can be viewed from the screens in the graphic display.
1.3.6 Indication of Auxiliary Inputs / Outputs States and Protection LEDs
Every auxiliary input/output and protection LEDs can be viewed from the screens in the graphic
display.
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1.4 Additional Functions
Trip and Close Circuit Supervision
The equipment incorporates elements to monitor the breaker’s trip and close coil circuits. Both
circuits are monitored in either of the breaker’s two possible status, tripped and closed. This
supervision unit produces two digital outputs: Trip Coil Circuit Failure and Close Coil Circuit
Failure.
Operation Outputs Monitoring
Associated to Trip and Close Circuit Monitoring functions, the operation output functions can be
found.
Breaker Monitoring
Fault interruption kA2 values are summed and accumulated in the terminal unit each time the
breaker trips. The accumulated kA2 information is compared with an alarm set point intended for
predicting breaker maintenance.
Excessive Number of Trips
This function ensures that the breaker will not be subjected to an undesirable number of
operations during a fixed period of time.
LED Targets
Terminal unit front panel indication consists of fourteen LEDs. Twelve of them are user
definable. The two remaining LEDs are always assigned to indicate the Protection terminal and
the Control terminal are Ready. From the twelve user definable LEDs, four of them are referred
to protection and eight of them to control.
Metering Module (optional)
Optionally, the equipment can be provided with a metering board that has three current and
three voltage analog inputs. These inputs allow the accurate metering of current, voltage, power
and energy. The module includes also input and output transducers.
Protection and Control Status Contact Inputs
The protection and control subsystems have a number of inputs depending to the model of
7IRD. The equipment’s configuration will define their respective functions.
Protection and Control Auxiliary Outputs
The protection and control subsystems have a number of outputs depending to the model of
7IRD. The equipment’s configuration will define their respective functions.
Chapter 1. Description
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Oscillographic Register (Optional)
The oscillography function is composed of two sub-functions; Capture and View.
Local Information available through Alphanumeric Display
Information about controlled bay can be reached using the keys next to the graphic display or
using the keypad next to the alphanumeric display:
Alphanumeric Display:
- Protection and Control Settings
- Protection Operations:
Last Trip
Started Units
Activated Units
Inputs and Outputs Status
- Metering used by Protection Subsystem:
Phase and Ground Currents
Maximum Current
Positive and Negative Sequence Currents
- Protection Records (when the model has oscillographic function, these records
only can be analyzed by communications):
Event Recording
Fault Reports
Current History Record
Graphic Display:
- Bay Single Line Diagram
- Alarm Panel
- Outputs and Inputs Status
- Measurements and Counters
Self -Test Program
A continuously running diagnostic self-test program verifies the correct operation of the
Terminal Unit and alerts the user to potential problems.
Chapter 1. Description
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1.5 Model Selection
7IRD
1 2 3 4 5 6 7/8/9 10 11
1 Functions
A 3x50/51 + 50N/51N + 79 M 3x50/51 + 50N/51N
J 3x(2x50)/51 + (2x50N)/51N + 79
2 Options
1 Basic Model 7 Oscillographic Register + Digital TOPS
2 Oscillographic Register
3 Rated Current
E 1A G 5 A (Phase) + 1 A (Ground)
F 5 A + Optional Ground N 5A
4 Auxiliary Voltage
Power Supply Digital
Inputs
Supervision
Inputs Power Supply Digital
Inputs
Supervision
Inputs
1
24-48 Vdc (±20%) 24-48 Vdc 24-48 Vdc
3
220-250 Vdc (±20%) 48-250 Vdc 250 Vdc
2
110-125 Vdc (±20%) 24-125 Vdc 125 Vdc
4
90-250 Vdc/ac (±20%) 125 Vdc 125 Vdc
5 Voltage / Frequency / Language
0 50 Hz / Spanish D 120 &120 √3 Vac / 60 Hz / Spanish
1 110 & 110√3 Vac / 50 Hz / Spanish E 60 Hz / Portuguese
2 60 Hz / English F 120 & 120 √3 Vac / 60 Hz / Portuguese
3 120 & 120 √3 Vac / 60 Hz / English G 50 Hz / French
A 50 Hz / English H 110 & 110 √3 Vac / 50 Hz / French
B 110 & 110 √3 Vac / 50 Hz / English J 50 Hz / Portuguese
C 60 Hz / Spanish K 120 & 120 √3 Vac / 50 Hz / Portuguese
6 Communications
1 RS232 + RS232 7 RS232 + 2 x RS232
2 RS232 + PFO 1mm 8 RS232 + GFO Ring (ST)
3 RS232 + GFO (SMA) A RS232 + GFO (ST) Double Rear Port
4 RS232 + GFO (ST) B RS232 + Double Rear Port (GFO*+RS232**)
5 RS232 + RS485 C RS232 + Double Rear Port (RS232*+RS485**)
6 RS232 + PFO Double Ring D RS232 + 2 x PFO
7/8/9
Inputs / Outputs / Metering Module
To be defined
10 Type of Enclosure
K 4 U x 1 19" rack
11 Communications Protocol Procome and DNP3
To be defined at Factory
(*) Protection // Control (**)
Functions
50 Phase Instantaneous Overcurrent.
51 Phase Time Overcurrent.
50N Ground Instantaneous Overcurrent.
51N Ground Time Overcurrent.
79 Recloser.
Chapter 1. Description
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7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020 1-8
2. Technical Data
2.1Power Supply Voltage ......................................................................................... 2-2
2.2Protection Subsystem ......................................................................................... 2-2
2.2.1Power Supply Burden ......................................................................................... 2-2
2.2.2Current Analog Inputs ......................................................................................... 2-2
2.2.3Measurement Accuracy ...................................................................................... 2-2
2.2.4Accuracy of Time Measurement ......................................................................... 2-2
2.2.5Repeatability ....................................................................................................... 2-3
2.2.6Transient Overreach ........................................................................................... 2-3
2.2.7Status Contact Inputs .......................................................................................... 2-3
2.2.8Trip and Close Outputs ....................................................................................... 2-4
2.2.9Auxiliary Contact Outputs .................................................................................... 2-4
2.3Control Subsystem .............................................................................................. 2-5
2.3.1Power Supply Burden ......................................................................................... 2-5
2.3.2Current Analog Inputs (Measurement Circuit Board) .......................................... 2-5
2.3.3Voltage Inputs (Measurement Circuit Board) ...................................................... 2-5
2.3.4Measurement Accuracy (Measurement Circuit Board) ....................................... 2-5
2.3.5Accuracy of Time Measurement ......................................................................... 2-5
2.3.6Status Contact Inputs .......................................................................................... 2-6
2.3.7Double Contact Outputs (SD1 and SD2) ............................................................ 2-6
2.3.8Simple Contact Outputs ...................................................................................... 2-6
2.3.9Transducer Input/Outputs ................................................................................... 2-6
2.4Communications Link .......................................................................................... 2-7
Chapter 2. Technical Data
M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020 2-2
2.1 Power Supply Voltage
Value selectable according to model
24-48 Vdc (±20%)
110-125 Vdc (±20%)
220-250 Vdc (±20%)
90-250 Vdc/ac (±20%)
Note: in case of an auxiliary power supply voltage failure, terminal units can tolerate a maximum interruption
of 100ms at 110Vdc.
2.2 Protection Subsystem
2.2.1 Power Supply Burden
Quiescent 7 W
Maximum 20 W
2.2.2 Current Analog Inputs
Nominal Value In = 5A or 1A
(depending on the model)
Thermal Withstand Capability 4 In (continuously)
50 In (for 3 s)
100 In (for 3 s)
Dynamic Limit 240 In
Current Circuit Burden In = 5A <0.2VA
In = 1A <0.05VA
2.2.3 Measurement Accuracy
Current < 5 % or 20 mA (the greater)
for In = 1A or 5A
2.2.4 Accuracy of Time Measurement
Definite Time and Inverse Time E = 5 % or 25 ms (the greater)
(UNE 21-136 and IEC 255)
Chapter 2. Technical Data
2-3 M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020
2.2.5 Repeatability
Operating Time 2 % or 25 ms (the greater)
2.2.6 Transient Overreach
Expressed as: 100xTO
I
II
A
TA
<10% for totally inductive lines
<5% for lines with an impedance angle of 70º
I
A = Pick up value for a current with no DC component
I
T = Pick up value for a current with maximum DC offset
2.2.7 Status Contact Inputs
Electrically separated programmable inputs, with polarity. The number of digital outputs will be defined
according to model.
Rated Voltage
IN1 Input 110 Vac ±20 %
IN2 to IN8 Inputs 24 - 125 Vdc ±20 %
(according to model) 48 - 250 Vdc ±20 %
Status Contact Inputs IN5 to IN8 will be selectable (according to model) when they are used in trip and
close circuits supervision applications.
Available Rated Voltages 24 - 48 Vdc ±20%
125 Vdc ±20%
250 Vdc ±20%
Current Drain < 5 mA
Chapter 2. Technical Data
M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020 2-4
2.2.8 Trip and Close Outputs
2 contacts normally open, one of which is configurable internally to closed.
I DC Maximum Limit (with resistive load) 30 A in 1 s
I DC Continuous Service (with resistive load) 8 A
Close 2500 W
Breaking Capability (with resistive load) 150 W - max. 8 A - (48 Vdc)
55 W (80 Vdc - 250 Vdc)
1250 VA
Break (L/R = 0.04 s) 60 W at 125 Vdc
Switching Voltage 250 Vdc
Momentary Close Time Trip Contacts remain Closed 100 ms
2.2.9 Auxiliary Contact Outputs
Electrically separate open and closed contacts and normally open contacts.
I DC Maximum Limit (with resistive load) 5 A in 30 s
I DC Continuous Service (with resistive load) 3 A
Close 2000 W
Breaking Capability (with resistive load) 75 W - max. 3 A - (48 Vdc)
40 W (80 Vdc - 250 Vdc)
1000 VA
Break (L/R = 0.04 s) 20 W at 125 Vdc
Switching Voltage 250 Vdc
Chapter 2. Technical Data
2-5 M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020
2.3 Control Subsystem
2.3.1 Power Supply Burden
Control Subsystem Power Supply Burden
Quiescent 9 W
Maximum 20 W
Measurement Circuit Board Power Supply Burden
Quiescent 4 W
Maximum 9 W
2.3.2 Current Analog Inputs (Measurement Circuit Board)
Nominal Value (Phase and Ground) In = 5A or 1A
Thermal Withstand Capability 4 In (continuously)
50 In (for 3 s)
100 In (for 1 s)
Dynamic Limit 240 In
Current Circuit Burden In = 5A <0.2VA
2.3.3 Voltage Inputs (Measurement Circuit Board)
Nominal Value Depending on the model
Thermal Withstand Capability 2 Vn (continuously)
Current Circuit Burden Vn = 110V <0.5 VA
2.3.4 Measurement Accuracy (Measurement Circuit Board)
Current < 0.5 %
2.3.5 Accuracy of Time Measurement
Accuracy of Time Measurement E = 5 % or 30 ms (the greater)
Chapter 2. Technical Data
M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020 2-6
2.3.6 Status Contact Inputs
The number of digital outputs will be defined according to model.
Rated Voltage 24 - 125 Vdc ±20%
48 - 250 Vdc ±20%
230 Vac ±20%
Current Drain < 5 mA
2.3.7 Double Contact Outputs (SD1 and SD2)
I DC Maximum Limit (with resistive load) 30 A in 1 s
I DC Continuous Service (with resistive load) 8 A
Close 2500 W
Breaking Capability (with resistive load) 150 W - max. 8 A - (48 Vdc)
55 W (80 Vdc - 250 Vdc)
1250 VA
Break (L/R = 0.04 s) 60 W at 125 Vdc
Switching Voltage 250 Vdc
Momentary Close Time Trip Contacts remain Closed 100 ms
2.3.8 Simple Contact Outputs
I DC Maximum Limit (with resistive load) 5 A in 30 s
I DC Continuous Service (with resistive load) 3 A
Close 2000 W
Breaking Capability (with resistive load) 75 W - max. 3 A - (48 Vdc)
40 W (80 Vdc - 250 Vdc)
1000 VA
Break (L/R = 0.04 s) 20 W at 125 Vdc
Switching Voltage 250 Vdc
2.3.9 Transducer Input/Outputs
Input impedance < 1k
Output impedance < 1k
This manual suits for next models
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