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MRZS 05 - 13.2. Operation manual. Microprocessor device for protection, automatics, checking and ontrol of attachments of 6-35 kv. RSGI.466452.012-13.2 (OM)

MRZS  05 - 13.2. Operation manual. Microprocessor device for protection, automatics, checking and  ontrol of attachments of 6-35 kv. RSGI.466452.012-13.2  (OM)

1.1 Microprocessor devices for protection, automatics, checking and control of attachments of 6-35 kV named as MRZS-05 RSGI.466452.012-13.2 and RSGI.466452.012-13.20 are used in overhead and cable lines of voltage rated 6-35 kV with a view of protecting them from unbalance current, surge currents in circuit of capacitor batteries, resonance surge voltages, in the case of voltage loss and provide:

  • The three-stage maximal current protection (MCP);
  • The directed protection against Ground Faults (DPGF);
  • The two-stage maximal voltage protection (MAXVP);
  • The minimal voltage protection (MINVP);
  • The two-stage protection against negative sequence current (PNSC);
  • The automatic repeated switching-on of attachment after its switching-off from protection devices (one-time ARSO);
  • The automatic frequency offload (AFOL) accompanied with frequency automatic repeated switching-on or FARSO (via DI);
  • Back-Up of Switch Failure (DSFB)

2 Specification

2.1 General specification

2.1.1 Nominal input analog signals

  • - IN, the input alternating current of phases A, B, C amounts to 5 A;
  • - UN, the input alternating voltage (two line voltages UAB and UBC), amounts to 100 V;
  • - The alternating-current frequency amounts to 50 Hz.
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2.1.2 Power Supply:

  • Voltage of operating direct current in the amount of (100-350) V or that one of alternating current with frequency of 50 Hz in the amount of (70 - 250) V for versions RSGI.466452.012,-13.2 and the same parameters in the amount of (65-155) V and (60-132) V respectively for version RSGI.466452.012-13.20;
  • Consumed power of electrical-feed circuit amounts to 3.2 W at most in the standby mode;
  • Operation of device is not discontinued in the case of short-term downfalls of voltage to zero, which last 500 s at most.

2.1.3 Power consumed with the aid of alternating-current circuits in the case of using nominal current IN of 5 amounts to 50.0 mV*A per phase at most (in the case of disconnected feeding current transformers).

2.1.4 Acceptable overloading of circuits for input currents and voltages:

  • - The long-term operation mode in the amount of 3 IN, 1.5 UN;
  • - Current of one-second thermal stability in the amount of 50 IN;
  • - The long-term operation mode is used when residual current amounts to 2 A at most. The consumed power amounts to 20.0 mV*A at most if the supplying current of 3I0 amounts to1 . Current of one-second thermal stability amounts to 50 at most.

2.1.5 Making-and-breaking capacity of relay contacts belonging to circuits of switching-off and switching-on is given in the Table 3.9 and 3.10 respectively.

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2.1.6 Electrical isolation of galvanically separated circuits for:

  • - Input circuits of current and voltage included in different phases between themselves and with respect to the device housing withstands testing voltage of 2,000 V lasted 1 minute in the case of supplying alternating current of 50 Hz;
  • - Other galvanically non-separated circuits with the exception of power-supply circuits of 26 V at most, with respect to the device housing and between themselves withstands testing voltage of 1,500 V lasted 1 minute in the case of supplying alternating current of 50 Hz;.

2.1.7 Input circuits of current and voltage (between themselves and with respect to housing) withstand three positive and three negative voltage pulses with amplitude of (5 0.5) kV, duration of pulse leading edge amounts to (1.2 30 %) μs and that one of pulse trailing edge does to (50 10) μs.

The duration of intervals between pulses amounts to 5 s at least.

2.1.8 The MRZS device is resistant to influence of high-frequency interferences with parameters:

  • - The form of frequency fluctuations amounts to 1 0.1 MHz;
  • - The duration of frequency fluctuations amounts to 2 0.2 s;
  • - The pulse amplitude value for the longitudinal connecting scheme and for lateral connecting one of connection to a signal source amounts to 2.5 0.25 kV and 10.1 kV respectively.

2.1.9 The minimal time of protection response with respect to current and voltage amounts to 0.04 s at most.

2.1.10 Time of program reset amounts to 0.04 s at most after decreasing the measured value below a reset value.

2.1.11 The time readout error intrinsic to the time-lag element amounts to 0.01 s at most for the time holding of 5 s and does to 0.05 s for the holding time ranging from 5 to 32 s.

2.1.12 The readiness time for the MRZS device operation after supplying voltage via a power plug-and-socket amounts to 0.2 s at most and does to 0.35 s at most for “cold” switching in response to short-circuit and in the case of power supply provided with the aid of short-currents.

2.1.13 Bias amounts to 5 % at most for the MRZS response parameters of current and voltage.

2.1.14 Rated value of climatic conditions
The limiting values of climatic environmental factors are taken into consideration according to state standards GOST15543.1 and GOST15150 version for the moderately cold climate (UKhL), category 4, and are intended for countries with the moderate climate. At that the lower limiting value of ambient-air temperature amounts to -30 º , and upper one does to +60 º s.
Values of climatic factors are taken into consideration according to state standards GOST 15542 and GOST15150 for articles of the UKhL3.1 climatic version (operation in closed occasionally heated premises in conditions of moderate and cold climate) in their inactivity state (storing and transportation).
When the MRZS device is non-operating (storage and transportation) values of climatic factors are taken into consideration according to the state standards GOST 15542 and GOST15150 for articles of the UKhL3.1climatic version.
According to operation conditions connected with exposure to mechanical environmental factors the device in question is kept in line with group M13 according to state standard GOST 17516.1.

2.1.15 Mass o of the MRZS device amounts to 3.6 0.1 kg.

2.1.16 Dimensions of the MRZS device amount to 210 x 120 x 220 mm.

2.2 Functions performed

2.2.1 The MRZS device provides monitoring and measurement of following values:

  • - Phase currents with frequency of 50 Hz and the rated value IN amounted to 5 , which are ranged from 0.1 to 30 IN and show the measurement error of 5 % at most;
  • - Line voltages of U, U and 3U, voltage of zero-phase sequence;
  • - Current of zero-phase-sequence is ranged from 0.01 to 2A and show the measurement error of 5 % at most;

2.2.2 The MRZS device performs functions of relay protection in the form of:

  • - The three-stage maximal current protection (MCP);
  • - The directed protection against Ground Faults (DPGF);
  • - The two-stage Protection of negative sequence current (NSCP);
  • - The two-stage maximal voltage protection (MAXVP);
  • - The minimal voltage protection (MINVP).

2.2.3 MRZS performs functions of automatics:

  • - Switch switching-on and switching-off;
  • - Automatic speeding-up of MCP in the case of switch switching off
  • - One-time automatic repeated switching-on (ARSO);
  • - The device intended for Back-Up of Switch (HVSW) Failure (DSFB).

2.2.4 The MRZS device is equipped with 8 discrete inputs for device logic control.

At that:

  • - Selecting every logical-signal input can be made;
  • - Discrete inputs are galvanically separated between themselves and with respect to power-supply circuits;
  • - Current consumption for discrete-input circuit amounts to 2 mA at most;
  • - Operation of discrete inputs under voltage of direct or alternating current can be provided.

- When the voltage-operated alternating current is supplied, the “logical zero” level is ranged from 0 to 100 V, and that one of “logical one” is ranged from 150 to 250 V for the RSGI.466452.012-13.2 version; and the “logical zero” level is ranged from 0 to 50 V, and that one of “logical one” is ranged from 75 to 125 V for the RSGI.466452.012-13.20 version.
- When voltage-operated direct current is supplied, the “logical zero” level is ranged from 0 to 100 V, and that one of “logical one” is ranged from 150 to 250 V for the RSGI.466452.012-13.2 version and the “logical zero” level is ranged from 0 to 50 V, and “logical one” level is ranged from 75 to 125 V for the RSGI.466452.012-13.20 version.
- When the voltage-operated alternating current is supplied, time for changing the input logical state (anti-chatter) within range from 20 to 60 ms and with resolution of 20 ms can be selected;
- When the voltage-operated direct current is supplied, time for changing the input logical state (anti-chatter) within range from 0 to 60 ms and with resolution of 10 ms can be selected;

  • - The voltage type (alternating or discrete one) is selected via the MRZS device menu.

2.2.5 The MRZS device is equipped with 7 discrete outputs relays for producing the device-generated commands.

Both the command-depend and the signal-depend (together with storing) relay operation mode can be selected. If the said relay operates in the signal (trigger) mode, its reset via discrete input is provided for.

2.2.6 The MRZS device is equipped with 7 light-emitting diode indicators.

Six of them are intended for actuation indication of protections and automatics and can independently select an operation mode, namely:
- The trigger one (together with storing)
- The standard one without storing.
If indicator operates in the trigger mode, its reset is provided for.
The 7th indicator is used for indicating position of power cut-off switch.

2.2.7 The MRZS device performs functions of self-diagnostics.

2.2.8 The MRZS device performs functions of configuration management, adjustment and ranking of all systems.

2.3 Characteristics of protection functions

2.3.1 Maximal current protection (MCP)

2.3.1.1 MCP consists of following stages:

  • - 1st stage with independent specified time (current cut-off);
  • - 2nd stage with current-independent and current-dependent specified time (PT-80 type like)
  • - 3rd stage with independent specified time (overload protection).

2.3.1.2 Characteristics (MCP):

  • - The adjustment range of operating current of the first stage is varied from 0.1 IN to 30 IN with the adjustment step of 0.01 A, the same one of the s and the third stages is ranged from 0.25 to 30 IN with the adjustment step of 0.01 A;
  • - The setting range of response time for the first stage is varied from 0.00 to 25.00 s , for the second stage it is varied from 0.00 to 32.00 s and for the third stage it is varied from 0.00 to 300.00 s with the setting adjustment step of 0.01 s;
  • - The resetting ration of fault detectors of protection stages amounts to 0.95 at least;
  • - Deviation values of basic parameters of protection responding from set ones amounts to 5 % at most;
  • - Static blocking of every stage via discrete input can be made;
  • - Speeding-up of operation time of the MCP second stage from 0.20 to 5.00 s within the period of 0.20-5.00 s after switch short-circuiting can be made;
  • - Forced setting via the menu of the MPC second stage into the speeding-up mode can be made. Static blocking of forced speeding-up of the MPC second stage via discrete input can be made (switch-over into the proper mode without speeding-up).

2.3.1.3 The characteristic of the MCP second stage provided with a current-dependent holding time coincides with that one of the -80 relay. Current-time characteristics of MCP2 are given in Appendix B.

  • 2.3.2 The directed protection against Ground Faults (DPGF) has the following characteristics:
  • - It operates with and without holding time in response to switching-off or received signal;
  • - Static blocking via discrete input can be made;
  • - Protection would operate if settings of the 3I0 zero-sequence current and the 3U0 voltage are exceeded, and angle between 3I0 and 3U0 is in the operation zone;
  • - The range of settingsfor the 3I0 currentis varied from 0.01 to 2.0 and provided with resolution of current settingin the amount of 0.001 .The deviation of response amounts to 10 % at most;
  • - The range of settingsfor the 3U0 zero-sequence voltage is varied from 10 to 150 V.The increment step of operation voltage amounts to 0.01 V;
  • - Angle between the 3I0 current and the 3U0 voltage (current lag from voltage), which corresponds to the operation zone middle, is equal to 90 º;
  • - Selection of DPGP direction (direct or reverse) via the proper menu can be made;

- The operation zone area is located from 0 10 º to 180 10 º in forward direction. The operation zone area is located from 180 10 º to 360 10 º in reverse direction

2.3.2.1 The range of settings for values of protection response time is varied from 0.00 32 s with the increment step of 0.01 s.

2.3.2.2 The minimal time period of protection response amounts to 50 ms at most.

2.3.2.3 Protection returning ratios amount to:

  • At least 0.9 for current;
  • At least, 0.9 for voltage;
  • At most 5 º for angle.

2.3.2.4 If voltage or current are reset below settings, or power direction is changed, dropout time amounts to 0.04 s at most.

2.3.3 Protection against the 3I0 zero-sequence current.

Protection responds to the 3I0 zero-sequence current of industrial frequency and has following characteristics:

  • Its operates with or without specified time in response to switching-off or for to signal receiving;
  • The response current range is varied from 0.01 to 2.0  with the increment step of 0.001 and with the parameter deviation of 10 % at most;
  • The setting range of response time is varied from 0 to 32 s with the increment step of 0.01 s.

The protection in question is switched to via the first harmonic filter; protection robustness amounts to four at least for frequency of 150 Hz and to 15 at least for frequency of 400 Hz respectively.

  • 2.3.3.1 The protection static blocking via discrete input together with DPGF can be made.

2.3.4 Protection against Ground Faults as regards 3U0 has the following characteristics:

  • Its operates with or without specified time in response to switching-off or for to signal receiving;
  • The response voltage range is varied from 10 to 150 V with the increment step of 0.01 V;

The protection in question is switched to via the first harmonic filter for detuning from high harmonics; protection robustness amounts to eight at least for frequency of 150 Hz
2.3.4.1 The setting range of response time is varied from 0 to 32 s with the increment step of 0.01 s.
2.3.4.2 The minimal time of protection responding amounts to 50 ms at most.

2.3.4.3 The proper protection returning ratio amounts to 0.95 at least;

2.3.4.4 The return time for voltage reset amounts to 0.04 s at most.

2.3.4.5 The protection static blocking can be made via discrete input.

2.3.5 Minimal voltage protection (MINVP)

2.3.5.1 Protection operates with or without specified time in response to switching-off or to signal receiving.

2.3.5.2 Protection actuating is made after voltage lowering below setting of bus line voltages.

The voltage setting range is varied from 25.00 to 110.00 with the increment step of 0.01 V.

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The setting range of response time is varied from 0 to 32 s with the increment step of 0.01 s.
Selection of the menu-supported logic for protection starting can be made:

  • Only upon actuating all starting elements of voltage (logic “AND”);
  • Upon actuating one starting element of voltage(logic “OR”);
  • 2.3.5.3 The menu-supported input-output of voltage blocking can be carried.

2.3.5.4 The menu-supported input-output of current blocking can be carried.

The setting range of current is varied from 0.25 to 5.00 with the increment step of 0.01 .
If current is blocked voltage blocking is provided, if voltage is below 0.25 V.
2.3.5.5 Protection is switched to via the first harmonic filter; protection robustness amounts to four at least for frequency of 150 Hz and to 15 at least for frequency of 400 Hz respectively.

  • 2.3.5.6 Static blocking and protection starting via discrete input can be made.

2.3.6 Maximal voltage protection (MAXVP)

2.3.6.1 Protection operates with or without specified time in response to switching-off or to signal receiving and has two stages with independent specified time and settings.

2.3.6.2 Starting-up of stages is made in the case of exceeding the setting of bus line voltages.
The setting range of voltage is varied from 40.00 to 140.00 V with the increment step of 0.01 V.
The setting range of response time is varied from 0 to 32 s with the increment step of 0.01 s.
The menu-supported logic for’ starting of stages can be carried:

  • Only upon actuating all starting elements of voltage (logic “AND”);
  • Upon actuating one starting element of voltage (logic “OR”).

2.3.6.3 The protection is switched to via the first harmonic filter; protection robustness amounts to four at least for frequency of 150 Hz and to 15 at least for frequency of 400 Hz respectively.

  • 2.3.6.4 Static blocking and starting of protection stages via discrete input can be made.

2.3.7 Protection of negative sequence current (PNSC)

2.3.7.1 Protection operates with or without specified time in response to switching-off or to signal receiving and has two stages with independent specified time and settings.

2.3.7.2 Starting-up of stages is made in the case of exceeding the ratio of negative-sequence current to positive-sequence current of setting with relation to the same ratio of operation.
The ratio setting range is varied from 0.01 to 1.00 with the increment step of 0.01 V.
The setting range of response time is varied from 0 to 32 s with the increment step of 0.01 s.

2.3.7.3 Protection is held if values of negative-sequence current and positive-sequence current are below 0.05 .

2.3.7.4 Static blocking and starting of protection stages via discrete input can be made.

2.3.8 ARSO (FARSO).

2.3.8.1 HVSW switching-off is made in the case of supplying voltage to “ARSO/FARSO” to DI.

2.3.8.2 ARSO holding is kept if voltage is supplied to DI of “ARSO/FARSO”.

2.3.8.3 If signal is not supplied DI of “ARSO/FARSO”, ARSO inhibiting is reset, and ARSO is started.

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2.4 Automatics

2.4.1 Automatic Repeated Switching-On (ARSO)

2.4.1.1 ARSO is the one-time signal, which provides the relay specified time. It start-up is made upon actuating MCP or by external devices.

2.4.1.2 When supplying voltage to DI of “AFOL/FARSO” ARSO is prohibited, and if this voltage is not supplied, ARSO prohibition is reset (FARSO is generated).

2.4.1.3 After switch switching-on and voltage supplying to DI of “HVSW position” ARSO is held within the period of “readiness time”. The program-initiated input and output of ARSO starting signal generated with the aid of separate MCP stages is provided for.

2.4.1.4 Multiple switch switching-on in response to short-circuit is ruled out.

2.4.1.5 Time parameters of ARSO:

  • - The range of response time settings for the ARSO first cycle is varied from 0.20 to 32.00 s and provided with the increment step of 0.01 s. The ARSO time deviation from specified values of this parameter amounts to 3 % at most.
  • - The time range of preparation for the repeated ARSO operation is varied from 0.00 to 32.00 s and provided with the increment step of 0.01 s.
  • - Holding time of switching-on signal is varied from 0.00 to 32.00 s and provided with the increment step of 0.01 s.

2.4.1.6 The parameter of ARSO activity/inactivity can be set via the MRZS device menu.

2.4.1.7 ARSO can be held via DI.
2.4.1.8 Prohibition of switching-on the power cut-off switch is provided for if “Switching-Off Command” was input.

2.4.2 Device for switch-failure back-ups (DSFB).

2.4.2.1 DSFB operates for disconnecting adjacent attachment.

2.4.2.2 Starting DSFB is made with the aid of MCP or external devices (via discrete input).

The menu-supported selection of MCP stages for DSFB starting-up can be made.

2.4.2.3 This device is provided with the response current setting and two time settings.

2.4.2.4 The setting range for response current is varied from 0.25 to 5.0 with the increment step of 0.01 .

2.4.2.5 The setting range of response time for every stage is varied from 0.00 to 32.00 s with the increment step 0.01 s.

2.4.2.6 Deviation of current response parameters amounts to 5 % at most, and deviation of response time does to 3 % at most.

2.4.3 Switch control

2.4.3.1 Switching-on delay of the said switch for time control is made from the moment of previous switching-off of the said switch. Delay starting-up is carried out with the aid of switch interlock contacts via discrete input.

  • The setting range of time control beginning from the moment of previous switching-off of the said switch is varied from 0.00 to 300.00 s with the increment step of 0.01 s;
  • - .
  • If holding of switch switching-on, which is caused by time control, is active the menu-supported input-output can be made beginning from the moment of previous switching-off of the said switch.

2.4.3.2 Prohibition of the said switch switching-on can be set in the case of its disconnecting from MCP and reset via discrete input. When prohibition of the said switch switching-on is active in the case of its disconnecting from MCP the menu-supported input-output can be made.

2.4.3.3 If the said switch is switched off, switching-on holding is active within a period of switching-off signal operation. Extending holding signal of switching-on is provided within the period ranged from 0.00 to 32.00 s with the increment step of 0.01 s.

2.5 Diagnostics

- The MRZS device provides self-diagnostics and identifies malfunctions.

- Permanent check of software correctness is provided (with the aid of method of checksums).

- Diagnostics-checked assemblies in the CAS-MRS-M assembly:

  • - Assembly of ADC;
  • - Flash memory;
  • - Real-time clock (RTC);
  • - Random-Access Memory.

2.6 Recording

The MRZS device is equipped with recorders of four types.

2.6.1 Event Recorder

The device RAM is equipped with an event recorder that fixes actuation of protections, starting elements, emergency switching-off and receiving the “Malfunction” signal.
The said event recorder fixes initiations (appearing) commands (signals), which are listed in the “Distribution of commands” Table 9.1.
If the said event recorder fixes signal the latter is stored there until either zeroing or device resetting.
The said event recorder can be zeroed with the aid of pressing the “F” button located on keyboard of the MRZS device or with the aid of issuing the “Answerback” command according to the Modbus RTU protocol.
You would take into consideration that also upon issuing the “Answerback” command the light indication system consisting of light-emitting diodes and located on the device front panel is reset.
Reading the event recorder content is carried out according to the Modbus RTU protocol only.
Receiving high-level information about state of fulfillment (availability) of commands in the course of polling can be made.

2.6.2 Analog Recorder

This recorder stores array that includes samples of instant values of currents, voltages and time marker with tying to current time instant (the oscillography mode).
Resolution of the said analog signal recorder amounts to 1.5 ms at most.
Reading and setting following parameters of the said analog recorder can be made from the high level according to the Modbus RTU protocol:

  • The period of pre-emergency process recording. Time is ranged from 0.1  to 5.0 s with the discreteness setting of 20 ms or amounts to one period of mains frequency;
  • The period of emergency process recording. Time is ranged from 0.1  to 20 s with the discreteness setting of 20 ms or amounts to one period of mains frequency;
  • The list of MRZS device commands, which are sources for starting-up the said analog recorder.

Dependency of the maximal number of emergencies fixed with the aid of the MRZS device (from 0 to 13) on the set period of emergency process is put forth below.

Number of emergencies
14
7
4
2

Emergency period
0.1 s5.8 s
5.86 s11.7 s
11.72 s17.5 s
17.52 s29.0 s

Information about all events is stored in flash-memory.
Diagnostics of the recorder flash-memory state is made after switching on the MRZS device and in the course of operation. Availability of errors can be found either in the “Diagnostics” section menu or according to the MODBUS protocol.
If the said analog recorder fails, the “MALFUNCTION” signal can be initiated. In the “Diagnostics” section the proper “Analog Recorder Testing” information is displayed.

2.6.3 Discrete Recorder

The said discrete recorder makes recording with tying to beginning of emergency process and does storing discrete signals for every emergency:

  • Time and date of emergency-process starting-up;
  • All input and output discrete signals, signals of actuating protection elements and elements of automatics, switching-on and switching-off of power switch with fixing time of arriving and departing signals with accuracy of 4 ms;
  • The maximal value of phase current together with recording all other currents and voltages at the moment of fixing the maximal current value when protections related with phase currents are switched on;
  • The maximal value of 3Io current together with recording other currents and voltages at the moment of fixing the maximal current value when 3Io current protections are switched on;
  • The maximal value of line voltage together with recording currents and other voltages at the moment of fixing the maximal voltage value when maximal voltage protections are switched on;
  • The minimal value of line voltage together with recording currents and other voltages at the moment of fixing the minimal voltage value when minimal voltage protections are switched on;
  • The maximal value of negative sequence current together with recording all other currents and voltages at the moment of fixing the maximal current value when protections against the negative sequence current are switched on.

The maximal event number fixed within one emergency period amounts to 70.

2.6.4 Recorder of program events

This register is intended for fixing and storing information (date, code and rime) about malfunctions and failures originated in operation of the MRZS device.
This information makes finding malfunctions after failure of the MRZS device easier.

2.7 Adjustment, Configuration Management and Ranking

2.7.1 In the configuration-management mode the MRZS device allows to assign or eliminate functions of the MRZS device.

2.7.2 In the Adjustment mode the MRZS device can make ranking of discrete inputs, outputs, and light indicators.

2.7.3 In the case of assigning parameters of functions related with protection and automatics via the device in-built panel or via the USB-D interface the MRZS device allows setting:

  • - Response settings;
  • - Specified times;
  • - Options of MCP and options of characteristics;
  • - Switch-on and switch-off stages of protection and automatics;
  • - Switch-on and switch-off individual types of protections and automatics.

 

Content

1 PURPOSE
2 SPECIFICATION

2.1 General Specification
2.2 Functions Performed
2.3 Characteristics of Protection Functions
2.4 Automatics
2.5 Diagnostics
2.6 Recording
2.7 Adjustment, Configuration Management and Ranking

3 STRUCTURE AND DESIGN

3.1 Structure
3.2 Design of THE MRZS DEVICE-05

4 ARRANGEMENT AND OPERATION

4.1 Arrangement
4.2 Operation
4.3 Power Supply

5 MARKING AND SEALING
6 PACKING
7 LIMITS OF OPERATION
8 MAKING ARTICLE READY FOR OPERATION

8.1 Safety measures in the case of making article ready for operation
8.2 External Examination
8.3 Instructions with respect to device orientation
8.4 Instructions on Switching-On and Testing
8.5 List of Probable Malfunctions

9 APPLICATION

9.1 Operation Order
9.2 Description of functional chain of MRZS device
9.2.1 MCP against inter-phase short-circuits
9.2.2 Speeding-up assembly
9.2.3 Directed protection against ground faults (DPGF)
9.2.4 Protection against minimal voltage (MINVP)
9.2.5 Two-stage protection against maximal voltage (MAXVP)
9.2.6 Negative sequence current protection (NSCP)
9.2.7 Automatic repeated switching-on (ARSO)
9.2.8 Device for switch failure back-up (DSFB)
9.2.9 Assemblies of switching-on and switching-off of high-voltage switch..
9.2.10 Principle of designing of buses’ logical protection (BLP)
9.3 Operation of the MRZS device with the aid of built-in panel
9.3.1 Switching-on
9.3.2 Viewing Sections of Main Menu
9.3.3 “Clock” section of main menu
9.3.3.1 General information
9.3.3.2 Viewing and editing of clock parameters.
9.3.4 “Measurement” section of main menu
9.3.4.1 General information
9.3.4.2 Viewing of measured parameters
9.3.5 "Adjustment" section of the main menu
9.3.5.1 General information
9.3.5.2 “State” point in “Adjustment" menu
9.3.5.3 "Inputs" point in “Adjustment” menu
9.3.5.4 "Command Outputs" point in "Adjustment" menu
9.3.5.5 "Indication" point in “Adjustment” menu
9.3.5.6 "Switch" point in “Adjustment” menu
9.3.5.7 "Transformer" point in “Adjustment” menu
9.3.5.8 "IOD" point in “Adjustment” menu
9.3.5.9 "Communication" point in “Adjustment” menu
9.3.5.10 "Recording discrete signals" point in "Adjustment" menu.
9.3.5.11 "Recording analog signals" point in "Adjustment" menu
9.3.5.12 "D-functions" point in "Adjustment" menu.
9.3.6 "Configuration" section of main menu
9.3.6.1 General information
9.3.6.2 Configuration changing
9.3.7 "Recording" section of main menu
9.3.7.1 General information
9.3.7.2 “Statistics” point
9.3.7.3 “Recorder of prommed events” point
9.3.7.4 “Fixation of entered analog parameters” point
9.3.8 “Diagnostics” section of main menu.
9.3.9 Other sections of main menu
9.4 Setting protections’ parameters
9.4.1 Maximal current ptotection (MCP).
9.4.1.1 General information
9.4.1.2 Reviewing and Editing of MCP set parameters
9.4.1.3 MCP control
9.4.2 Directed protection against ground faults (DPGF).
9.4.2.1 General information
9.4.2.2 Reviewing and Editing of DPGF parameters
9.4.2.3 DPGF control
9.4.3 Minimal voltage protection (MINVP).
9.4.3.1 General information
9.4.3.2 Reviewing and Editing of MINVP parameters
9.4.3.3 MINVP control
9.4.4 Maximal voltage protection (MAXVP).
9.4.4.1 General information
9.4.4.2 Reviewing and Editing of MAXVP parameters
9.4.4.3 MAXVP control
9.4.5 Negative-sequence current protection (NSCP).
9.4.5.1 General information
9.4.5.2 Reviewing and Editing of NSCP parameters
9.4.5.3 NSCP control
9.4.6 Automatic Reapeated Switching-On (ARSO).
9.4.6.1 General information
9.4.6.2 Reviewing and Editing of ARSO parameters
9.4.6.3 ARSO control.
9.4.7 Device for Switch Failure Back-Up (DSFB)
9.4.7.1 General information
9.4.7.2 Reviewing and Editing of DSFB parameters
9.4.7.3 DSFB control.

10 MAINTENANCE OF MRZS DEVICE

11 running REPAIR OF MRZS DEVICE

12 STORING
13 TRANSPORTATION
14 RECYCLING

Appendix . Range of acceptable values of MRZS device parameters

Appendix B. Current-time characteristics of MCP2

Appendix C. Functional Description of Keyboard for MRZS-05M .

 


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