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ABB eVM1 Installation And Service Instructions Manual
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ABB eVM1 Installation And Service Instructions Manual

ABB eVM1 Installation And Service Instructions Manual

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eVM1
Installation and service instructions
12 ... 17.5 kV - 630 ... 1250 A - 16 ... 31.5 kA

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  • Page 1 Installation and service instructions 12 ... 17.5 kV - 630 ... 1250 A - 16 ... 31.5 kA...
  • Page 3 Non-observance can result in death, personal injury or substantial damages to property. Guarantee claims might not be accepted when safety warnings are not respected. They look like the following: Warning! Responsible behaviour safeguards your own and others’ safety! For any requests, please contact the ABB Assistance Service.
  • Page 4 Index Introduction Environmental protection programme Packing and transport Checking on receipt Storage Handling Description 5.1. Standards and regulations 5.2. Service conditions Structure 6.1. Drive structure 6.2. Structure of the circuit-breaker poles 6.3. Basic structure of the withdrawable circuit-breaker Operation 7.1. Operation of the circuit-breaker drive 7.2.
  • Page 5 Multifunction Protection and Switchgear Control Unit 14.1. About this section 14.2. Safety Information 14.3. Acronyms and definitions 14.4. Menu, Toolbar and Tabs 14.5. General settings 14.6. Logic Configuration 14.7. Protection Parameters 14.8. Input / Output Mapping 14.9. Monitoring 14.10. Communication 14.11.
  • Page 6 UniGear ZS1 type switchgear and PowerCube modules) and put them into service. For correct use of the product, please read it carefully. Like all the apparatus we manufacture, the eVM1 circuit-breakers are designed for different instal- lation configurations.
  • Page 7 Also make sure that all the materials described in the shipping notes are included in the supply. Should any damage or irregularity be noted in the supply on unpacking, notify ABB (directly or through the agent or supplier) as soon as possible and in any case within five days of receipt.
  • Page 8 3. Storage When a period of storage is foreseen, our workshops can (on request) provide suitable packing for the specified storage conditions. On receipt the apparatus must be carefully unpacked and checked as described in Checking on receipt (chap. 2). If immediate installation is not possible, the packing must be replaced, using the original material supplied.

  • Page 9: Standards And Regulations

    The eVM1/P type vacuum circuit-breakers are designed for indoor installation in air-insulated switchgear. In respect of the technical characteristics, eVM1/P circuit-breakers are suitable for operation of electric circuits under normal and fault service conditions. The vacuum circuit-breakers have particular advantages when used in systems with a high fre- quency of operations and/or which lead to a certain number of short-circuit trips.

  • Page 10: Service Conditions

    To avoid the risk of corrosion or other damage in areas with a high level of humidity, and/or rapid and large temperature variations, take appropriate steps (for example, by using suitable electric heaters) to prevent condensation phenomena. For special installation requirements or other operating conditions, please contact ABB.

  • Page 11: Drive Structure

    6. Structure 6.1. Drive structure The drive is of the magnetic type and basically consists of the magnetic actuator (8) (fig. 4), the control module (10), the current sensors (3), the capacitor/s (2) and the kinematics which transmit the movement to the circuit-breaker poles. The actuator (8) acts on the circuit-breaker poles by means of special kinematics.
  • Page 12 6.1.2. Capacitor The energy for operating the circuit-breaker is stored in one or two capacitors according to the circuit-breaker model (fig. 5). The capacitors are designed so that the energy for an O-C-O operating cycle is supplied without the need for recharging. The energy stored by the capacitor is constantly monitored by means of measuring the relevant voltage.
  • Page 13 6.2. Structure of the circuit-breaker poles The poles are installed in the rear part of the circuit-breaker frame (fig. 7). The active parts of the poles (vacuum interrupters) are embedded in epoxy resin and protected against shocks and other external agents. With the circuit-breaker closed, the current flows from the top terminal (1) to the fixed contact (1a) in the vacuum interrupter (4), and then through the moving contact (2a) and the flexible connector (6) as far as the bottom terminal of the circuit-breaker (2).
  • Page 14 7. Operation 7.1. Operation of the circuit-breaker drive 7.1.1. Magnetic actuator The magnetic actuator used in the eVM1 circuit-breakers generates the run required to operate the moving contacts of the interrupters and integrates all the functions of a traditional operating mechanism.
  • Page 15 The capacitors which allow circuit-breaker operation, for a maximum time of about 30 seconds (with closed circuit-breaker), even in the case of a drop in the auxiliary voltage, are provided in the control circuit. In case of emergency, the circuit-breaker can in any case be opened by means of a special crank handle which acts directly on the moving armature of the drive.
  • Page 16 • Undervoltage function: controls circuit-breaker opening if the applied voltage drops below the tolerance limit (established by the Standards). To prevent the function intervening when the voltage drops below the specified level (e.g. in the case of motor starting), it is possible to set a trip time. The undervoltage function is normally disabled.
  • Page 17 24 V - 240 V a.c./d.c. is applied to the input (electric closing lock). 2) The eVM1/P circuit-breaker can only be closed when the withdrawable truck is in the test or service position. In intermediate positions the closing lock voltage is cut off by the auxiliary contacts of the truck.
  • Page 18 8. Circuit-breaker characteristics 8.1. General characteristics of fixed circuit-breakers Fig. 11a Circuit-breaker eVM1 12 eVM1 17 Standards IEC 60694 - 62271-100 CEI 17-1 (File 1375) Rated voltage Ur [kV] Rated insulation voltage Us [kV] Withstand voltage at 50 Hz Ud (1 min) [kV]...
  • Page 19 8.1.1. Types of circuit-breakers Ir (40°C) Dimensions Type of circuit-breaker [kV] [kA] L [mm] I [mm] A [mm] eVM1 12.06.16 p150 eVM1 12.06.20 p150 eVM1 12.06.25 p150 31,5 eVM1 12.06.32 p150 1250 eVM1 12.12.16 p150 1250 eVM1 12.12.20 p150 1250 eVM1 12.12.25 p150...
  • Page 20 8.2. General characteristics of circuit-breakers for UniGear type ZS1 switchgear and PowerCube modules Fig. 11b Circuit-breaker eVM1/P 12 eVM1/P 17 Standards IEC 60694 - 62271-100 CEI 17-1 (Fasc. 1375) Rated voltage Ur [kV] Rated insulation voltage Us [kV] Withstand voltage at 50 Hz...
  • Page 21 Ir (40°C) Dimensions Type of [kV] [kA] L [mm] I [mm] A [mm] ø [mm] circuit-breaker eVM1/P 12.06.16 p150 eVM1/P 12.06.20 p150 eVM1/P 12.06.25 p150 31,5 eVM1/P 12.06.32 p150 1250 eVM1/P 12.12.16 p150 1250 eVM1/P 12.12.20 p150 1250 eVM1/P 12.12.25 p150...

  • Page 22: Standard Fittings

    8.4. Standard fittings The basic versions of the withdrawable circuit-breakers are three-pole and fitted with: – closing pushbutton (integrated in the control panel -PI1) – opening pushbutton (integrated in the control panel -PI1) – mechanical operation counter – mechanical signalling device for circuit-breaker open/closed –...

  • Page 23: Optional Accessories

    The accessories identified with the same number are alternative to each other. 1 - Interface for panel (HMI) The interface allows the control and protection device incorporated in the eVM1 circuit-breaker to be managed from the low voltage compartment door of the unit.
  • Page 24 Cable which allows the personal computer to be connected to the interface for the HMI panel to configure the eVM1. 5 - Connection cable Kit for configuring the eVM1 when there is no HMI (see para. 14.10). Kit which makes it possible to have an RS485 port in the low voltage compartment of the panel to connect the personal computer to in those cases where there is no HMI.

  • Page 25: Trip Curves

    9. Installation 9.1. General Correct installation is of prime importance. The manufacturer’s instructions must be Warning! carefully studied and followed. It is good practice to use gloves to handle the pieces during installation. The areas involved by the passage of power conductors or conductors of auxiliary cir- cuits must be protected against access of any animals which might cause damage or...

  • Page 26: Preliminary Operations

    9.3. Preliminary operations – Clean the insulating parts with clean dry cloths. – Check that the top and bottom terminals are clean and free of any deformation caused by shocks received during transport or storage. 9.4. Installation of fixed circuit-breakers The circuit-breaker can be mounted directly onsupporting frames to be provided by the cus-tomer, or on a special supporting truck (avail-able on request).The circuit-breaker, with supporting truck, mustbe suitably fixed to the floor of its own compart-ment by the customer.

  • Page 27: Overall Dimensions

    Racking-in Max. 25 Nm Racking-out Fig. 13 Fig. 14 9.7. Overall dimensions Fixed circuit-breaker eVM1 p150 12 kV 17.5 kV 630 A 1250 A 16 kA 20 kA 25 kA 31.5 kA...
  • Page 28 Fixed circuit-breaker eVM1 p210 12 kV 17.5 kV 630 A 1250 A 16 kA 20 kA 25 kA 31.5 kA Fixed circuit-breaker eVM1 p275 12 kV 17.5 kV 630 A 1250 A 16 kA 20 kA 25 kA 31.5 kA...
  • Page 29 Withdrawable circuit-breaker eVM1/P p150 12 kV 17.5 kV 630 A 1250 A 16 kA 20 kA 25 kA 31.5 kA HMI: Panel interface for eVM1 Door drilling...

  • Page 30: General Procedures

    10. Putting into service 10.1. General procedures All the operations regarding putting into service must be carried out by ABB personnel or by suitably qualified customer personnel with in-depth knowledge of the apparatus and of the Warning! installation. Should the operations be prevented, do not force the mechanical interlocks and check that the operating sequence is correct.
  • Page 31 10.3. Operations before putting into service Before putting the circuit-breaker into service, carry out the following operations: – remove the lifting hooks; – check tightness of the power connections at the circuit-breaker terminals; – establish the setting of the primary electronic overcurrent release (if provided); –...
  • Page 32 Frequent operation of the service and short-circuit currents does not negatively affect the degree of vacuum of the interrupters. Typical useful life expectancy of a eVM1 vacuum circuit-breaker is determined by the following factors: • embedded vacuum interrupter, maintenance-free up to 30,000 mechanical operating cycles.
  • Page 33 Also see the IEC 62771.200 Standard. The data on the useful life are in principle applied to all the components which are not directly affected by the operator. The useful life of the manually activated components (movement of the withdrawable truck, etc.) can vary according to the type of handling.
  • Page 34 • The LEDs on the inductive sensors are activated as soon as the circuit-breaker has reached the closing and opening limit positions. These operations can only be carried out by ABB personnel or suitably qualified and specially trained Note personnel.
  • Page 35 9.2. Trip curves: when the sum of the ultimate currents is reached, the complete pole must be replaced. Dismantling and replacement of the pole can only be carried out by ABB personnel or suitably qualified Note and specially trained personnel, especially for the necessary adjustments.

  • Page 36: List Of Spare Parts

    All assembly operations of spare parts/accessories must be carried out following the in- Warning! structions enclosed with the spare parts, by ABB personnel or by suitably qualified cus- tomer personnel with in-depth knowledge of the apparatus (IEC 60694) and all the Stand- ards aimed at carrying out these interventions in safe conditions.

  • Page 37: About This Section

    This section is addressed to engineering personnel and to anyone who needs to configure the eVM1. 14.2 Safety Information Do not make any changes to the eVM1 configuration unless you are familiar with the eVM1 Warning! and its Operating Tool. This might result in malfunction and loss of warranty.
  • Page 38 Save: saves current configuration data on existing project file in format .eVM1 Save as: saves current configuration data on project file in format .eVM1 requiring the project filename Print: Prints all the Tabs on default printer enabling you to keep a paper copy of data settings...
  • Page 39 14.4.2.2 View View Menu makes it possible to enable/disable the Toolbar and to enable/disable the Status Bar, displaying whether a valid connection to the IED has been established. 14.4.2.3 Transfer The Transfer Menu provides the utilities for Upload/Download of the CB configuration and to start Monitoring the CB status continuously.
  • Page 40 Reset Values Only: set all the parameter of the selected default configuration Reset Values and Store to eVM1: set all the parameter of the selected default configurationand transfers this configuration from PC to the electronic device (IED) if an active connectionis available HW SW Versions: reads the HW and SW versions from the IED for compatibility check and information to ABB service.
  • Page 41 Check Device Status: Available when an active communication link has been established with the IED. Shows calibration status; gain and offset must be at 111 for valid calibration. Calibration sub-Menu: calibration enables you to correct errors due to device tolerance within the accuracy class and to improve overall analog input acquisition precision.
  • Page 42 Anomalies sub-Menu: enables you to read (Anomalies List) all active anomalies from the IED for information to ABB service and to reset (Reset Anomalies) the Anomaly signalling, clearing the list and turning off the blinking LED “No Anomaly” on the CB HMI. Available when an active communication link has been established with the IED.
  • Page 43 IED and is not modified by new configuration or firmware download. Read retrieves data from the IED for compatibility check and information to ABB service. Available when an active communication link has been established with the IED.

  • Page 44: General Settings

    – Set the Rated Network Frequency value, by default 50 Hz. Fig. 29 Do not make any changes to the eVM1 configuration unless you are familiar with the eVM1 Warning! and its Operating Tool. Changing the nominal currents and frequency values of the Main...
  • Page 45 14.5.1.1 Nominal Primary Current Channels 1…3 are used for phase current measurement based on the Rogowski sensor input. The Nominal Primary Current is the load rated current; the protection function setting range is adjusted automatically according to the Nominal Primary Current value entered. The threshold setting range of each protection is expressed in primary current Ampere [A], typically from is 0.5 In to 20 In where In is the Nominal Primary Current value entered.
  • Page 46 14.5.1.5 Power Connection Diagram As an example, the following figure shows the typical connection diagram of phase current Rogowski sensors and of optional CCT earth current transformer for a generic feeder; please refer to schematic drawings 1VCD400060 for the withdrawable version and 1VCD400089 for the fixed version. Fig.
  • Page 47 When Free is selected the figure shows the single-line diagram of the last scheme selected in light grey, as this is the meaning base free configuration is starting from. The picture shown in light grey in Free configuration is not fully relative to the actual single-line Note scheme, since with free selection some components might not be applicable (e.g.
  • Page 48 14.5.4 Functionality Enabling The Functionality Enabling checklist manages the enabling of a number of automation functions. The SW enabling of the automation function is only one of the possible conditions to be verified to Note Note operate the automation. Additional necessary conditions may be activation of a specific digital input (DI) and a specific HW setting on the IED.
  • Page 49 Once the re-close sequence has been performed, the function is automatically reset (it is not repeated other times till new correct conditions reappear). In accordance with ANSI, Toc must be less than 300ms independently of Open Command duration (for convention we can define Toc=200ms). If the open command persists over Toc, another opening operation will be performed after the OC operation (see dash-line).
  • Page 50 14.5.5.2 CB Closing Disabling This is used to block the CB in the open position by external interlocking logics. When the function is enabled (ticked) and the # CB Close Disabling input (default DI 5) is at low level “0” (no voltage on input or lower than activation threshold, about 10V AC/DC), no closing command is executed.
  • Page 51 Fig. 36 The Second Safety Open is executed when DI 16, non-configurable, goes to high level “1” (voltage on input higher than activation threshold, about 16…20V AC/DC) in two modes: a) DSP is working and the WD signal is ok the Second Safety Open Command is executed by DSP as a SW opening if there is no SW blocking condition, i.e.
  • Page 52 14.5.5.6 Energy Failure Autotrip The IED monitors the charge of the capacitors, continuously checking the voltage. When the CB is in the closed position there must be enough energy to carry out the opening operation (O), while if the CB is open there must be enough energy to close and then to open (CO) it. If there is not enough energy (level ‘KO’), the CB must be locked in its position or opened if the Energy Failure Autotrip function is enabled When Energy Failure Autotrip is enabled it will make the CB open when the external power supply...
  • Page 53 14.5.5.7.1 SW configuration Fig. 39 When UnderVoltage function is enabled (ticked), UnderVoltage Function Settings is enabled and the function operation mode can be set: Instantaneous: the function operates with no intentional delay when the UnderVoltage condition is detected; Delayed: ticked by default. The function is started when the UnderVoltage condition is detected (voltage on DI1 falls below 0.70 of the dip-switch value setting).
  • Page 54 Closing Allowed: ticked by default. CB closing is allowed after UV opening operation even if UV condition is detected. It is used for particular applications, like supervision of the Supply Voltage of a MV motor via a VT, where the CB powers the motor). CB position Open Closed...
  • Page 55 See figure below for I1 Dip switch location on I/O board: I/O board I/O board S1 S2 S3 S4 S1 S2 S3 S4 -XB34 -XB34 Fig. 41 14.5.5.8 Close allowed in trip status After a protection TRIP, the general Trip signal is latched, i.e. the signal status remains high after all protections exit the TRIP status.
  • Page 56 14.5.6 Additional built-in Functionality 14.5.6.1 Unit Ready Monitoring The Ready LED on the CB HMI and relative “READY/NOT READY” contacts signal the CB is Ready to operate when the following conditions are true: capacitor is charged WatchDog OK (uP is operative) detection of correct “CLOSED”...
  • Page 57 14.5.6.3 Capacitor load voltage Supervision The IED monitors the charge of the capacitors, continuously checking the voltage. During the capacitor charging phase, when the maximum charging level is exceeded, an automatic Power Supply shutdown is performed, to avoid damage to the capacitor. The voltage on capacitor output (normally 80V ) must not exceed 90V .At this value the Power...
  • Page 58 14.5.6.5 Maximum unsuccessful attempts This built-in function manages a maximum of 10 accumulated (1) unsuccessful attempts to opera- te (open or close) the CB, i.e. when either Close or Open operation is not completed (the CB does not reach the desired position) at the maximum time Tmax. The Maximum unsuccessful attempt function limits the stress on the IED power drive components and signals the Anomaly condition to the operator.
  • Page 59 When the close command is removed, the anti-pumping function is reset. This is a Global function, i.e. the function manages both Local and Remote O/C commands. Close Command Open Command CB Status Time Fig. 43 14.5.6.8 Simultaneous O-C Commands This function ensure that closing is disabled when an opening command is active at the same time In the case of simultaneous open and close commands (when closing and opening have different delays before being considered valid, e.g.

  • Page 60: Logic Configuration

    14.6 Logic Configuration The Logic Configuration Tab enables management of the logical output Start and Trip signals of the protection function and use of external signals to block them. Fig. 45 14.6.1 Logical interface of protection functions The input/output signals described below are logical quantities inside the Circuit-breaker controller. They are not generally available one by one at the breaker interface and can be made available as a digital input/output through the logic configuration and input/output mapping (see chapter: Input / Output Mapping).
  • Page 61 Fig. 47 When the Block signal is active the protections to be blocked are reset, put in PASSIVE status and are temporarily disabled; all internal registers and timers are cleared. The protection function will then remain in the idle state until the Block signal goes low. When the Block signal disappears the blocked protections are re-enabled.
  • Page 62 BLOCK from Interlocking Inputs: Each active protection function can be blocked by the Interlocking inputs in the Logic Configuration Tab Window. The active protections have a selectable box. When the relative Interlocking Input is active (i.e. a voltage above the activation threshold is applied) all the ticked protection functions will be put into PASSIVE status and are temporarily disabled;...
  • Page 63 The General Start signal is active if at least one protection function is in START status; the General Trip signal is active if at least one protection function is in TRIP status. It must be noted that general START and TRIP can become active when the unit is not in Ready status.

  • Page 64: Protection Parameters

    This logic configuration of the enabled Start/Trip protection signals can be mapped on physical digital outputs as in the example below, where all six available signals are mapped on DO9,10,11,12 and 14,15. Protection Start 1 signal will always remains inactive (low) and DO10 open, as it has not been configured in the Logic Configuration window.
  • Page 65 Fig. 54 Available protection functions can be independently activated in the “Protection Parameters” dialogue window by ticking the relative box. Fig. 55...
  • Page 66 When a protection is ticked it is enabled and the relative setting button is active; the protection parameters setting window will be opened by clicking the setting button. The parameters can be modified and a check of their ranges is made before applying the new values.

  • Page 67: Definite Time Overcurrent Protection

    After the protection has entered the start status and the preset operating time (Time) has elapsed, the function goes into TRIP status and the trip signal is generated. The protection function will exit the TRIP status and the trip signal will be cleared when the measured current value falls below 0.4 of the set threshold value or when the block input becomes active.
  • Page 68 14.7.2.1.2 Operation criteria If the measured RMS current exceeds the setting threshold value (Start Value) for at least one phase, the overcurrent protection function is started. The protection function will remain in START status until there is at least one phase started. It will return to passive status and the start signal will be cleared if the current falls below 95% of the setting threshold value for all the phases.
  • Page 69 14.7.2.2.1.1 Parameters Fig. 59 Type: Tripping characteristic according to the IEC 60255-3 curve definition. Base current (Ieb): Current threshold for start condition detection. Time multiplier (k): Time multiplier to vary time delay for Trip condition. The trip time is calculated according to British Standard (BS 142) when the time multiplier k is used.
  • Page 70 The operating time depends on the measured current and the selected current-time characteristic. The formulas for the trip time according to British Standard (BS 142) and IEC 60255-3 are reported in the chapter: IDMT Protection Time-Current Characteristics. The protection function will exit the TRIP status, the trip signal and the counter will be cleared when the measured current value for all the phases falls below 40% of the setting threshold value.
  • Page 71 Parameter Values Default Step Unit Explanation Start Value DT1, Ie> 0,30 … 15 p.u. di Ien 0.3 Ien Earth fault Current threshold. Time, te> 40 … 30000 Earth fault Time delay. Start Value DT2, Ie>> 0,30 … 15 p.u. di Ien 1 Ien Earth fault Current threshold.
  • Page 72 14.7.2.4 Earth fault IDMT The dependent time earth fault current protection, like the IDMT, is a time-delay function with a set of hyperbolic current-time characteristics. One earth fault IDMT function with one out of four selectable current-time characteristics can be activated: Normal inverse, Very inverse, Extremely inverse and...

  • Page 73: Measurement Mode

    When Ie is measured directly (by ticking CCT presence box under “General settings”) Start Value begins from 0,05 Ien. 14.7.2.4.1 Measurement mode Earth fault IDMT protection function evaluates the RMS residual current at the fundamental frequency in two ways: direct measurement of earth fault current at the dedicated analog input via an external residual current transformer, or neutral current calculated by the vectorial sum of the three phase currents.
  • Page 74 14.7.2.5 IDMT Protection Time-Current Characteristics The Basic protection set provides two Overcurrent IDMT and Earth fault IDMT protection functions. For each protection of the four current-time characteristics, Normal, Very, Extremely and Long time Inverse can be activated one at a time: Fig.
  • Page 75 14.7.2.5.3 Operating time calculation The operating time depends on the measured current and the selected current-time characteristic. The formulas for the trip time according to British Standard (BS 142) and IEC 60255-3 are the following: BS142 EC60255-3 where: Time to trip Time multiplier to vary time delay (BS 142, 0.05 <...
  • Page 76 Fig. 66 Fig. 67...
  • Page 77 Fig. 68 Fig. 69...
  • Page 78 14.7.3 Motor protection functions - Full set The Full protection set provides all the following motor protection functions. 14.7.3.1 Blocked Rotor The Blocked Rotor protective function detects a rotor blocking condition by sensing the current increase arising from the loss of synchronism between the revolving rotor and the phase voltages. An extreme condition is reached when the rotor is not moving and the steady state current equals the motor start peak value, i.e.
  • Page 79 14.7.3.1.1 Operation criteria If the measured RMS current exceeds the motor starting setting threshold value (Start Value, Is) for at least one phase, the protection function is started. The protection function will remain in START status until there is at least one phase started. It will return to passive status and the start signal will be cleared if the current falls below 95% of the setting threshold value for all the phases.
  • Page 80 Fig. 71 Nominal Motor Current (IMn): Nominal Motor current for operational condition detection. Nominal Motor Temperature (TMn): Nominal Motor Temperature, asymptotically reached at IMn with environment temperature Tenv. Time Constant Off: Time constant for cooling down. Time Constant Normal: Time constant for motor operational condition. Time Constant Overheat: Time constant for overload condition.
  • Page 81 14.7.3.2.1 Measurement mode The thermal overload protection function evaluates the square average of phase currents at the fundamental frequency. The instantaneous temperature estimation is based on the average of the measured phase currents and on the environment temperature set in the protection dialogue window (Tenv).
  • Page 82 It is also assumed that at nominal environment temperature (i.e. Environment Temperature Tenv) and at nominal current (i.e. Nominal Motor Current IMn) the motor will reach (asymptotically) its nominal temperature (i.e. Nominal Motor Temperature TMn), i.e. where ∆ is the nominal (asymptotical) temperature increment of motor is the environmental temperature The value of ∆...
  • Page 83 14.7.3.3 Motor Start Protection A motor start can be critical if the load duration or the current increases. The motor start behaviour depends on the switching torque of the specific machine load. In general, these overloads are more critical for the rotor (rotor-critical motor) than the stator. The manufacturer assigns an allowable current-time start integral I t for motors.
  • Page 84 Protection Function Interlocked by Motor Start By ticking the relative box, the Motor Start can block all the other protection functions, to avoid a protection trip during the motor start phase. The Block signal becomes active when the current exceeds 10% motor nominal current value IMn (condition a).

  • Page 85: Number Of Starts

    14.7.3.4 Number of Starts A protection function supervises the number of starts of all the available protection functions. It is particularly significant for motors where it is also important to distinguish between cold starts and warm starts, the allowable number of which is generally provided by the motor manufacturer. Motor temperature estimated by the Thermal Overload protection is used to determine whether a start is cold or warm.
  • Page 86 Parameter Values Default Step Unit Explanation Number of Starts: 1 ... 10 Number of starts above Tws. Number of Warm Starts (Nws): 1 ... 10 Number of starts below Tws. Temperature of Warm Start (Tws): 20 …. 200 °C Temperature threshold to define a warm start.
  • Page 87 14.7.3.5 Unbalanced Load or Negative Sequence Protection The protection against unbalanced load due to negative phase sequence (NPS below) of the current is necessary in electrical rotating machines. Because the NPS current has a rotation direction opposite to the positive phase sequence, thermal overheating of the rotor can occur. The NPS current will namely induce in the rotor currents with double frequency, which can produce large thermal loss in the iron core of the rotor.
  • Page 88 14.7.3.5.1 Measurement mode The Unbalanced load protection function evaluates the measured amount of negative phase sequence current at the fundamental frequency. The negative-sequence three phase system L1 - L3 - L2 is superimposed on the three-phase system that corresponds to the standard phase sequence. The NPS current is obtained from the three-phase current set (IR, IS, IT) DFT values at the fundamental frequency.
  • Page 89 14.7.3.5.3 Thermal memory To prevent machine overheating in the case of intermittent negative phase sequence current, the internal time counter is not cleared when the negative phase sequence current falls below the start threshold. Instead, it is linearly decremented with time, using a user-configurable slope (i.e. Time Decreasing Rate).

  • Page 90: Input / Output Mapping

    14.8 Input / Output Mapping The Input Mapping / Output Mapping Tabs enable you to manage the mapping of the available 16 + 16 Digital Inputs (DI) and Digital Outputs (DO) with predefined meanings. The mappings are not configurable when one of the four available Single-line feeder diagrams is ticked in the General Settings page, while they can be fully configured by choosing the “Free”...
  • Page 91 14.8.1.1 Digital Input meanings BI operates in transition between two statuses (e.g. High to low or low to high); for Open commands it operates both on transition and status. # Under Voltage Command Signal expected to be normally high; when it goes to low, an opening command is executed if the Under Voltage function is activated.
  • Page 92 14.8.2 Digital Output Mapping The configuration matrix provides the 16 available DOs in the columns and a choice of possible meanings in the rows. When a box identifying a column and a meaning is ticked, the DO processing is enabled. When the assigned meaning becomes true, the free potential output contact, normally open, will be closed and keep the state as long as the condition assigned is valid.
  • Page 93 14.8.2.1 Digital Output meanings CB closed Output contact to signal CB position, contact closes when CB status = closed CB open Output contact to signal CB position, contact closes when CB status = open CB in Service position Output contact to signal CB truck position, contact closes when CB truck status = inserted CB in Test position Output contact to signal CB truck position, contact closes when CB truck status =...
  • Page 94 14.8.3 Digital Output Contacts characteristics Maximum power applicable (VDC and VAC on resistive load) AC resistive load ???? DC resistive load Current [A] Fig. 79 Characteristics of the control module contacts without potential The contacts without potential control module by special relay. For the characteristics of the contacts, please see the table and curves givenbelow Rated voltage 0 ...
  • Page 95 Curve A Maximum power applicable (V d.c. on resistive load). Fig. 80 Curve B Curve C Electrical life of the contacts at 250 V a.c. Electrical life of the contacts at 24 V d.c. Fig. 81 Fig. 82...
  • Page 96 14.8 Monitoring The monitoring Tab enables access to the IED to monitor DI/O status, CB currents, start/trip conditions, etc. when an active communication link has been established with the electronic Device (IED). The left column of the Monitoring page provides the same control capabilities (CB Open/Close) and status LEDs available on the local CB HMI.
  • Page 97 14.8.2 Digital Output Monitoring The 16 available outputs are mapped on the monitoring page according to the meanings selected in the output Mapping tab. Note Caution: the output meanings shown are only updated after a configuration upload from the IED. When the assigned meaning becomes true, the free potential output contact - normally open - will be closed and keep the state as long as the condition assigned is valid.
  • Page 98 When the communication is not active or the port is busy, a pop-up window provides the information and the LED goes off. 14.10.1.1 Direct communication with an eVM1 Remove the circuit-breaker screen and connect and male D-Sub 9-pin connector to the –XB24 connector on the IED basic card.
  • Page 99 Direct PC connection (by means of RS232 serial port) / IED Card. 1 -XB24 connector of the basic IED card 2 Male D-Sub 9-pin connector 3 Cable 4 232-485 Full-Duplex or Half-Duplex converter Fig. 85 Connections with Full-Duplex RFC-9R Connections with Half-Duplex RFC-9R connector (With this type of converter, Jumper connector JP6 must be used)
  • Page 100 14.10.1.2 Communication by means of the -XB 58-pin connector Connect the PC with a serial cable to the female D-Sub 9-pin connection on DIN rail in the secondary switchgear compartment. Connection to the PC is possible with a RS232/RS485 half-duplex converter or with a USB/RS485 half-duplex converter. (Enabling the serial port of the PC must be done in the same way as the previous case).
  • Page 101 Communication by means of the -XB 58-pin connector and the panel HMI Connect to the IrDA interface on the panel HMI with the ABB optic cable (RS232/IrDA converter). Connect the male D-Sub 9-pin connector (of the HMI cable/D-Sub 9-pin for DIN rail) to the female D-Sub 9-pin connector on DIN rail in the secondary cabinet.
  • Page 102 14.10.1.4 Communication Kits The communication kits are obligatory accessories provided with every eVM1 to allow communication. They allow a communication port in a secondary compartment for each eMV1 which you can connect up to with a PC with an optional Kit.
  • Page 103 Optional components for communication The optional Kits for communication are accessories provided with the eVM1 circuit-breakers to allow communication with the PC. An optional Kit every 5 eVM1 is recommended. The following versions are available: RS232/485 Half Duplex converter cable - male USB/485 Half Duplex converter cable - male D-Sub 9-pin connector.
  • Page 104 14.11 Password The Password Tab enables users with higher rights (ABB service personnel, production line personnel, etc.) to access reserved functionalities, that are otherwise disabled and highlighted in the Menu in a light grey colour. Fig. 96 14.12 LCD Panel HMI The LCD Panel HMI mounted on the secondary cabinet provides local control by pushbuttons to Open/Close the CB when the IED is in Local or Local and Remote (Global) mode.
  • Page 105 The arrows enable scrolling in each menù, the enter enables confirming the menù item choice, the Menù pushbutton enables to return to the higher level selection. The HMI is connected to the electronics on board the circuit-breaker by means of two bushing conductors using the plug socket of the circuitbreaker itself.
  • Page 106 14.13 Local CB HMI The local CB HMI provides local control by pushbuttons to Open/Close the CB when the IED is in Local or Global (Local and Remote) mode. Green/red LED bars display CB open/closed position. Green/red LED bars are alternatively switched ON and OFF when the CB position is not defined Note (position sensor indication is not consistent).
  • Page 107 Anomalies that require a higher skill and knowledge of the eCB are coded; the code will be given to ABB service personnel to analyse and solve the Anomaly condition. Some Anomaly conditions may be a block to the IED since critical information may be missing Note preventing safely operating the CB (e.g.
  • Page 108 14.15 Procedure for discharging the capacitor Whenever the circuit-breaker has to be moved or the cover removed (i.e. in case of maintenance), the capacitor energy storage, operating at 80V DC, must be discharged afeter cutting the circuit- breaker auxiliary supply off. Direct contact with DC voltage on Capacitor energy storage might result in fatal personnel Warning! injures.
  • Page 109 14.16 Insulation Test on CB secondary wiring The IED unit is tested during production at 2kV, 50 Hz on all the input/output connections. The routine insulation test is repeated during circuit-breaker manufacturing after wiring. To avoid stressing the IED excessively, it is advisable to avoid repetition of the insulation Warning! tests on the installation.
  • Page 110 Notes...
  • Page 112 ABB Power Technologies S.p.A. ABB AG Unità Operativa Sace Calor Emag Medium Voltage Products Via Friuli, 4 Oberhausener Strasse 33 Petzower Strasse 8 I-24044 Dalmine D-40472 Ratingen D-14542 Glindow Tel: +39 035 395111 Phone: +49(0)2102/12-1230, Fax: +49(0)2102/12-1916 Fax: +39 035 395874 E-mail: calor.info@de.abb.com...

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