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Changes for the Better MITSUBISHI ELECTRIC Mitsubishi Digital Protection Relay Series MELPRO – D CBV2 – A01D1 VOLTAGE RELAY INSTRUCTION MANUAL MITSUBISHI ELECTRIC CORPORATION Changed : Jan. 2005 PCKN-0IL738-A...
- Introduction - Thank for your purchasing MITSUBISHI ELECTRIC MELPRO – D Series Digital Protection Relay. Please read this manual carefully to be familiar with the functions and performances enough to use the product properly. Please note end users are required to be provided with this instruction manual.
– CONTENTS – Features ...............................4 General description ........................4 Features............................4 Rating and specifications ..........................6 General information ........................6 Protective elements ........................7 Measurement elements ........................7 Characteristics .............................8 Protective elements ........................8 Measurement elements ........................8 Common technical data........................9 Functions..............................10 Protection............................10 Measurement..........................13 Self-diagnosis ..........................14 Communication...........................15 Configuration..............................17 Internal configuration ........................17 External connection ........................20 Handling ..............................25...
Features General description Mitsubishi Electric MELPRO-D Series is a digital protection relay product with a microprocessor for protecting high/extra-high-voltage electric power system. With its improved functions, including operation support using the advanced communication networks, data saving at the power system faults and power system voltage/current measurement, this series of protection relay will allow stable and effective control and monitoring of electric power systems as well as provide high-reliable protection.
(8) Easy Maintenance The relays are adopted as draw-out unit mechanisms with automatic CT shorting at drawing, thereby making maintenance easy. (9) Easy wiring check It is possible to carry out forced operation of the output contacts individually. This will allow an easy wiring check.
Rating and specifications 2.1 General information Type name CBV2-A01D1 Relay without RS232C I/F 354PMB 355PMB Style Relay with RS232C I/F 541PMB 542PMB Undervoltage element ×31 Protection Element Overvoltage element × 3 Measurement Voltage Frequency 50 Hz 60 Hz Voltage 57 ~ 120 V...
2.2 Protective elements Relay without RS232C I/F 354PMB 355PMB Style Relay with RS232C I/F 541PMB 542PMB Operation voltage LOCK - 10 ~ 110V (1V step) Operation time INST - 0.1 ~ 10 s (0.1 s step) Undervoltage – AB phase test – BC phase test – CA phase test Setting When execute the relay test, enable to use the selected input UV test...
Characteristics (1) Rated frequency: ±1% The conditions shown on the left Common conditions (2) Ambient temperature: 20°C±10°C should be applied unless otherwise (3) Aux. supply voltage: Rated voltage±2% specified. 3.1 Protective elements Items Conditions Guaranteed performance Undervoltage Operation element (Common conditions) Setting value ±5% value Overvoltage...
3.3 Common technical data ITEM DESCRIPTION CONDITION STANDARD Ambient operating -10°C to +55°C IEC60255-6 temperature Environment Ambient storage and -25°C to +70°C IEC60255-6 transport temperature Damp heat +40°C, 95%RH, 4 days IEC60068-2-3 Thermal 1.15Vn, 3h withstand 40In, 1s 1) Between each circuit exposed Circuit of 60V or below 500VAC, 1min.
Functions 4.1 Protection 4.1.1. Undervoltage elements Fig. 4.1 “Undervoltage element internal function block diagram” shows operation of the undervoltage elements. Undervoltage element compares input voltages of voltage circuit with the operation setting. If an input voltage is less than the specified operation level, the element outputs an operation signal when the timer expires.
4.1.3 General functions (1) Setting of operation voltage The operation voltage settings for undervoltage and overvoltage elements are indicated with voltage values [V]. When the setting “Lock”, the elements selected are locked for operation. (2) Setting of operation timer The operation time settings for undervoltage and overvoltage elements are indicated with second [s]. (3) Operation display For undervoltage element, when the input voltage becomes less than the operation setting, the corresponding operation indicator LED will blink to allow you check the starting value.
(4) Output contacts The signaling outputs X to X and trip outputs X and X are all programmable type. The factory default setting of the arrangement of these outputs is as shown in the internal function block diagram of Figure 5.2. This setting can be freely changed by specifying outputs of the internal elements based on the OR logic.
4.2 Measurement Voltages input to the relay are measured and converted into freely set VT primary voltages, then indicated in the display. (1) Real time measurement The effective voltage input to the relay under steady state is displayed. (2) Max. record The maximum effective voltage is recorded and stored.
4.3 Self-diagnosis The self-diagnosis function monitors the electronic circuit and built-in power source continuously. If an abnormal condition occurs, the protection elements will be locked for operation. Also, the RUN LED lamp will go off and the self-diagnosis output contact (break contact) will be closed. (1) Checking defect code at failure detection When a failure is detected, the defect code will be recorded.
4.4 Communication Figure 4.5 shows an example of network system configuration. For more information on the communication facilities, see the materials shown in the introduction (page Central Control System Remote Operation and Monitoring The network system enables the central control system to fully access to the protection relays, and achieve remote monitoring of the measurement values, operational status etc as well as remote operation such as change of settings.
Using the communication facilitates, it is possible to perform Remote Monitoring and Remote Operation with the various useful functions shown in Table 4.2. Table 4.2 Outline of functions enabled by communication network Direction of Item Description communication Setting Read the settings stored in the protection relay. Measurement Read the measurements stored in the protection relay.
5.1 Internal configuration (1) I/O and CPU circuits Fig. 5.1 shows the internal block diagram of the model CBV2-A01D1. Voltage input is converted into AC signals at the electronic circuit level via the auxiliary transformer and filter circuits. These signals are retained as a form of DC signal in the sample hold circuit on each channel sharing a same time.
DC/DC Auxiliary Communication card Power Self-diagnosis power supply source (Except comm. card) B-01 Reception circuit A-03 Power circuit monitoring Serial B-02 Transmission circuit communication Self-diagnosis (only comm. card) B-03 A-02 B-04 Figure 5.1 Internal block diagram of Type CBV2-A01D1 relay...
Trip DC/DC B-20 power supply Power Programmable output sourse Power circuit Communication card A-03 B-01 monitoring Reception circuit Serial B-02 Transmission circuit communication B-03 Self-diagnosis (only comm. card) A-02 B-04 Figure 5.2 Internal function block diagram of Type CBV2-A01D1 relay...
5.2 External connection (1) Connection diagram Figures 5.4 to 5.5 show examples of input circuit (AC circuit) connection, Figure 5.6 an example of control circuit (DC circuit) connection and Figure 5.7 a terminal arrangement. In the terminals, M3.5 screws should be used and wires of 2 mm or less are recommended to be used.
built-in power fuse burns. Therefore, connect the timer to the external wiring. (See Fig. 5.6 “DC circuit connection diagram”) g. Earth circuit Be sure to earth the earth terminal located on the back of the relay according to the Class D earth wiring method.
Trip B-19 A-12 B-20 Programmable output B-01 Serial B-02 communication B-03 A-02 B-04 Figure 5.4 External connection diagram for CBV2-A01D1 relay (Phase-to-phase voltage detection) A B C B-05 A-01 Self-diagnosis output Auxiliary B-06 A-03 power supply B-07 B-08 U <...
Note 2) Regarding to the type CPS1 AC/DC converter or commercially available uninterruptible power supply (UPS), refer to the note *21 in the section 2.1 General information. Figure 5.6 Auxiliary power supply circuit connection example of type CBV2-A01D1 relay PCKN-OIL738...
Auxiliary power supply Earth circuit 32-M3.5 screws Figure 5.6 Rear view of type CBV2-A01D1 relay PCKN-OIL738...
Bear in mind that careless opening of circuits may result in opening the other control circuits too to impair the protective function. Be sure to only shut off the concerned circuit. Communication card Draw-out handles Lock levers Case Cover operating buttons Sub unit Cover Figure 6.1 Outside view of type CBV2-A01D1 relay PCKN-OIL738...
6.3.1 How to draw sub unit out (1) Removing the cover Hold the lock levers, which are located at both sides of the cover, on their front sections. Take off the cover straight toward you while pushing the levers inwards. (2) Drawing the sub unit Grip the draw-out handles (located at both sides of the front of the sub unit).
6.3.2 Housing the sub unit (1) Housing the sub unit Hold the sub unit on the top and bottom to push the unit into the case approx. a half of the unit. Note) - Be careful not to touch the PCB and parts inside the sub unit.
16.Operation indicator LEDs VT-SECONDARY(V) )< )> RESET MAX.-REC. )< )> RESET RESET ALARM )< )> TEST LED CBV2-A01D1 VOLTAGE RELAY STYLE: Aux. V: RATING: YEAR: SERIAL: TM T&D CORPORATION MADE IN JAPAN Figure 6.2 Front view of type CBV2-A01D1 relay PCKN-OIL738...
Table 6.1 Front control panel guide Designation Symbol Description Setting / Cancel Pressing this switch will start the procedure for setting, forced operation or option. When this switch is pressed again instead of the SETTING/CANCEL SET.END/TRIP switch, data that has been programmed will be all cleared to terminate the selected procedure.
Table 6.2 Letter representation of item data indicator LEDs Item Item Display in item data Display in item data Designation Letters Designation Letters phase phase phase Operation LOCK lock Instantaneou INST PCKN-OIL738...
6.4.2 Operational procedure For more information about the operational procedure shown below, see the MELPRO-D Series General Operation Manual (PCKN-OIL750). 126.96.36.199 Relay without RS232C communication I/F Table 6.3 Operational procedure Corresponding section of Item general operation manual Setting / forced Indication operation / Designation...
188.8.131.52 Relay with RS232C communication I/F Corresponding section of Item general operation manual Setting / forced Indication Designation Description operation / mode option mode As the same as Table 6.3 described in item 184.108.40.206 about the No. 010∼860. Set the VT primary voltage of the voltage circuit VT primary side [V] connected to the relay.
220.127.116.11 Guide for option function (1) Specifying contact arrangement data of output contacts The table below shows the setting guide table. See the section D-1 of the general operation manual for the detailed procedure. Digit Input Setting item 0 Self hold / auto reset upon reset Reset Hold judgement Undervoltage AB-phase...
(2) Specifying operation indicator LED hold data The table below shows the setting guide table. See the section D-2 in the general operation manual for the detailed procedure. Digit Input Setting item 0 Trip Reset Hold 1 Undervoltage AB-phase Reset Hold 2 Undervoltage BC-phase Reset Hold 3 Undervoltage CA-phase...
Mounting 7.1 Mounting dimension Mount the case to the panel according to Fig. 7.1 “Mounting dimension”. 4-φ6 holes (185) (18) M3.5 screw (for terminals) 4-M5 screws (for mounting) Figure 7.1 Outside dimension /drilling drawing 7.2 Standard operating environment Install the relay in the environment described in section 3.3 Common technical data. In addition, the following conditions should be kept: Abnormal vibration, shock, inclination or magnetic field should be avoided.
Test The relay has been fully tested prior to shipment. However, it is recommended to carry out a test again by referring to the following test guide before use. 8.1 Appearance inspection Check the relay for appearance according to the following procedure: Objects Check points Coil/conductor...
8.2 Characteristic test 8.2.1 Precautions in testing (1) Standard test conditions Ensure the following test conditions whenever possible: Note that carrying out a test under an environment that significantly differs from the following conditions may produce an incorrect result. Ambient temperature : 20°C±10°C Rated frequency : ±...
Test Phase Teraminal No. AB-phase A-07~A-08 A-08 BC-phase A-09~A-10 CBV2-A01D1 CA-phase A-11~A-12 (2) Test items and characteristic control point a. Forced operation test See “Front control panel operational procedure” in the section 6 “Handling”. b. Operation value test See “Operation and reset values” in the” 3 “Characteristic”.
Maintenance 9.1 Daily inspection Take every opportunity to carry out the following inspection: Check that the cover is not damaged and is attached properly. Check that no dust or iron chips have invaded into the unit. Check that the cover is not clouded notably. Check that abnormal noise is not generated.
Notify the following items when placing an order. Item Example of order Remarks Model CBV2-A01D1 For more information, see the section 2 “Rating and specification”. Frequency 50 Hz Select 50Hz or 60Hz. Rating...