MICROENER IM30-CV Manual de usuario

IM30-CV

Doc. N° MO-0150-ING

Rev. 1

Date 14.07.2003

Firmware:

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MULTIFUNCTION MICROPROCESSOR

PROTECTION RELAY

3 PHASE OVERLOAD AND UNBALANCE PROTECTION

FOR CAPACITOR BANK

TYPE

IM30-CV

OPERATION MANUAL

MUCAPACITOR

PROTECTION

RELAY TYPE

IM30-CV

ENTER/RESET

MODE

SELECT

PROG.

OL/OH

B.I./

F.D.

PROG/

BR.

FAIL

I.R.F.

MICROELETTRICA

SCIENTIFICA

MILANO ITALIA

UL/UH

IM30-CV

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INDEX

1 General utilization and commissioning directions_____________________________________________3

1.1 Storage and transportation_____________________________________________________________ 3

1.2 Installation__________________________________________________________________________ 3

1.3 Electrical connection__________________________________________________________________ 3

1.4 Measuring inputs and power supply______________________________________________________ 3

1.5 Outputs loading______________________________________________________________________ 3

1.6 Protection earthing___________________________________________________________________ 3

1.7 Setting and calibration_________________________________________________________________3

1.8 Safety protection_____________________________________________________________________ 3

1.9 Handling___________________________________________________________________________ 3

1.10 Maintenance________________________________________________________________________ 4

1.11 Fault detection and repair______________________________________________________________ 4

2 General characteristics and operation_______________________________________________________4

2.1 Power supply________________________________________________________________________ 4

3 Controls and measurements_______________________________________________________________5

4 Signalization____________________________________________________________________________ 6

5 Output relays___________________________________________________________________________ 7

6 Serial communication____________________________________________________________________ 7

7 Digital inputs____________________________________________________________________________8

8 Test___________________________________________________________________________________ 8

9 Keyboard and display operation____________________________________________________________ 9

10 Reading of measurements and recorded parameters___________________________________________10

10.1 ACT. MEAS (Actual measure)_________________________________________________________ 10

10.2 MAX VAL (Max Value) _____________________________________________________________ 10

10.3 LASTTRIP (Last trip) _______________________________________________________________11

10.4 TRIP NUM (Trip number) ____________________________________________________________11

11 Reading of programmed settings and relay’s configuration_____________________________________ 11

12 Programming___________________________________________________________________________ 12

12.1 Programming of functions settings_______________________________________________________ 12

12.2 Programming the configuration of output relay______________________________________________ 14

Note 1 : Function I<____________________________________________________________________ 15

Note 2 : Breaker Failure Protection ________________________________________________________15

Note 3 : Circuit breaker status detection ____________________________________________________ 15

Note 4 : Wait time for the reenergization of the capacitors ______________________________________15

Note 5 : Setting of the function for inherent unbalance compensation of the capacitors _______________ 15

13 Manual and automatic test operation________________________________________________________16

13.1 Mode “TEST PROG” subprogram W/O TRIP_______________________________________________ 16

13.2 Mode “TEST PROG” subprogram With TRIP_______________________________________________ 16

14 Maintenance____________________________________________________________________________ 16

15 Power frequency insulation test____________________________________________________________ 16

16 Electrical characteristics__________________________________________________________________17

17 Connection diagram (Standard Output) ______________________________________________________ 18

17.1 (Double Output)____________________________________________________________________ 18

18 Wiring the serial communication bus_______________________________________________________ 19

19 Change phase current rated input 1 or 5A___________________________________________________ 19

20 Overall dimensions______________________________________________________________________ 20

21 Time current____________________________________________________________________________ 21

22 Direction for pcb’s draw-out and plug-in_____________________________________________________ 22

22.1 Draw-out___________________________________________________________________________ 22

22.2 Plug-in_____________________________________________________________________________ 22

23 Keyboard operational diagram_____________________________________________________________ 23

24 Setting’s form___________________________________________________________________________ 24

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1. General utilization and commissioning directions

Always make reference to the specific description of the product and to the Manufacturer's instruction.

Carefully observe the following warnings.

1.1 - STORAGE AND TRANSPORTATION,

must comply with the environmental conditions stated on the product's instruction or by the applicable

IEC standards.

1.2 - INSTALLATION,

must be properly made and in compliance with the operational ambient conditions stated by the

Manufacturer.

1.3 - ELECTRICAL CONNECTION,

must be made strictly according to the wiring diagram supplied with the Product, to its electrical

characteristics and in compliance with the applicable standards particularly with reference to human

safety.

1.4 - MEASURING INPUTS AND POWER SUPPLY,

carefully check that the value of input quantities and power supply voltage are proper and within the

permissible variation limits.

1.5 - OUTPUTS LOADING,

must be compatible with their declared performance.

1.6 - PROTECTION EARTHING

When earthing is required, carefully check its efficiency.

1.7 - SETTING AND CALIBRATION

Carefully check the proper setting of the different functions according to the configuration of the

protected system, the safety regulations and the co-ordination with other equipment.

1.8 - SAFETY PROTECTION

Carefully check that all safety means are correctly mounted, apply proper seals where required and

periodically check their integrity.

1.9 - HANDLING

Notwithstanding the highest practicable protection means used in designing M.S. electronic circuits,

the electronic components and semiconductor devices mounted on the modules can be seriously

damaged by electrostatic voltage discharge which can be experienced when handling the modules.

The damage caused by electrostatic discharge may not be immediately apparent but the design

reliability and the long life of the product will have been reduced. The electronic circuits reduced by

M.S. are completely safe from electrostatic discharge (8 KV IEC 255.22.2) when housed in their case;

withdrawing the modules without proper cautions expose them to the risk of damage.

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a. Before removing a module, ensure that you are at the same electrostatic potential

as the equipment by touching the case.

b. Handle the module by its front-plate, frame, or edges of the printed circuit board.

Avoid touching the electronic components, printed circuit tracks or connectors.

c. Do not pass the module to any person without first ensuring that you are both at

the same electrostatic potential. Shaking hands achieves equipotential.

d. Place the module on an antistatic surface, or on a conducting surface which is at

the same potential as yourself.

e. Store or transport the module in a conductive bag.

More information on safe working procedures for all electronic equipment can be found

in BS5783 and IEC 147-OF.

1.10 MAINTENANCE

Make reference to the instruction manual of the Manufacturer ; maintenance must be carried-

out by specially trained people and in strict conformity with the safety regulations.

1.11 FAULT DETECTION AND REPAIR

Internal calibrations and components should not be alterated or replaced.

For repair please ask the Manufacturer or its authorised Dealers.

Misapplication of the above warnings and instruction relieves the Manufacturer of any liability.

2. GENERAL CHARACTERISTICS

Input quantities are supplied to 4 Current Transformers (- three measuring phase current - one

measuring the unbalance current)

Phase current inputs can be rated either 1 or 5A: changing over from one to the other configuration is

made by movable bridges provided on the relay card.

For the unbalance current input two taps (1 or 5A) are provided on the terminal board.

Make electric connection in conformity with the diagram reported on relay's enclosure.

Check that input currents are same as reported on the diagram and on the test certificate.

The auxiliary power is supplied by a built-in interchangeable module fully isolated an self protected.

2.1 - POWER SUPPLY

The relay can be fitted with two different types of power supply module :

24V(-20%) / 110V(+15%) a.c. 80V(-20%) / 220V(+15%) a.c.

a) - b) - 

24V(-20%) / 125V(+20%) d.c. 90V(-20%) / 250V(+20%) d.c.

Before energising the unit check that supply voltage is within the allowed limits.

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3. CONTROLS AND MEASUREMENTS

Five key buttons allow for local management of all relay's functions.

A 8-digit high brightness alphanumerical display shows the relevant readings (xxxxxxxx)

(see synoptic table fig.1)

Fig.1

MEASURES

MAX VAL.

LASTTRIP

TRIP NUM

ACT MEAS

Actual measuremant values

Max. values measured

Values measured at last tripping

N° of tripping for each function

Measurements

display

SET DISP

SETTINGS

FRELAY

Display of setting

Display of configuration of output relay

Setting Program

display

PROGR

SETTINGS

FRELAY

Setting of parameters

Configuration of output relays

Set Programming

PROG

TEST PRG

W/O TRIP

WithTRIP

Functional Test

Test with operation of signals and output relays

Test with operation of signals only

Test activation

by the key ENTER

Paramater scanning

by the key

SELECT

Parameter modification

by the key “ +” “ -”

Set validation

by the key ENTER

Scanning of

the menus by

the key

“ +” “ -”

MODE

SELECT

ENTER

+ -

(*) Enabled only if input current is zero

(*)

ENTER/RESET

MODE

SELECT

PROG.

The SELECT button chooses

which category of values within the

chosen mode to display

Pressing this button progressively

selects between

Measurements Display,

Setting Display, Programming,

and Test modes

When in Program mode, this

button stores the newly selected

value. If not in Program mode and

the relay has tripped, this button

resets the relay and all output

contacts. If not tripped, this button

restores the default display.

The + and - buttons are used to

select the actual measurement or

display desired when in

Measurements Display or Settings

Display modes. When in Program

mode, these buttons increase or

decrease the value of the

displayed setting.

When in Program mode, and when

all input currents are zero,

pressing this recessed button

places the relay into active

programming mode, allowing any

or all of the relay’s settings to be

altered.

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4. SIGNALIZATIONS

Eight signal leds (normally off) are provided:

Red LED

(OVERLOAD)

Flashing when measured current exceeds the set pick-up IL.

Illuminated on trip after expiry of the set trip time delay tIL.

Red LED

(PHASE FAULT)

Same as above related to IH and tIH.

Red LED

OL/OH

(EARTH FAULT)

Flashing when Earth Fault current exceeds the pick-up level OL or OH.

Illuminated on trip of the time delayed element tOL or tOH.

Red LED

UL/UH

(UNBALANCE)

Flashing when the UNBALANCE voltage exceeds the pick-up level UL or UH

Illuminated on trip of the time delayed element tUL or tUH.

Yellow LED

PROG/IRF

Flashing during the programming of the parameters

Lit-on in case of Internal Relay Fault.

Red LED

I

(RECLOSE

INHIBIT)

Flashing when the current drops below the set level I.

Illuminated on trip after expiry of the set trip time delay tI; the led

automatically extinguishes at the end of the set wait time for enabling to

reenergize the capacitor bank.

Red LED

BR. FAIL.

Flashing during the reclose inhibition time tRI

Lit-on when the BREAKER FAILURE function is activated.

Yellow LED

B.I./F.D.

(FUNCTION

DISABLED)

Illuminated when the operation of one or more of the relay functions has

been disactivated in the programming

Flashing when a block signal is present.

The reset of the leds takes place as follows



Leds

a,b,c,d,g

From flashing to off, automatically when the lit-on cause disappears

From ON to OFF, by "ENTER/RESET" push button only if the

tripping cause has disappeared.



Leds

e,f,h

From ON to OFF, automatically when the lit-on cause disappears.

In case of auxiliary power supply failure the status of the leds is recorded and reproduced when power

supply is restored.

OL/OH

UL/UH

B.I./

F.D.

PROG/

BR.

FAIL.

I.R.F.

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5. OUTPUT RELAYS

Five output relays are available (R1, R2, R3, R4, R5)

The relays R1,R2,R3,R4 are normally deenergized (energised on trip): these output relays are user

programmable and any of them can be associated to any of the IM30-C's functions.

For some function both instantaneous and time delayed elements are provided.

One relay eventually controlled by the instantaneous element of one function picks up or drops out

as soon as the measured input value gets respectively into the operation or the reset zone.

When the time of the delayed element of the same function has expired the relay is supposed to trip

the circuit breaker.

If after that time the input value still remains into the operation zone (Breaker Failure to open),

the relay controlled by the instantaneous element is anyhow forced to reset after a programmable

wait-time [tBF], thus eliminating any interlock of the backup protection.

It has to be remarked that the programming structure does not allow to associate the same relay at

the same time to instantaneous and delayed elements.

Therefore any relay already associated to any time delayed element cannot be associated to any

instantaneous element and viceversa.

The relay R5, normally energised, is not programmable and is deenergized on:

internal fault

power supply failure

during the programming

6. SERIAL COMMUNICATION

The relays fitted with the serial communication option can be connected via a cable bus or (with proper

adapters) a fiber optic bus for interfacing with a Personal Computer (type IBM or compatible).

All the operations which can be performed locally (for example reading of measured data and changing

of relay’s settings) are also possible via the serial communication interface.

Furthermore the serial port allows the user to read the demand recording data.

The unit has a RS232 / RS485 interface and can be connected either directly to a P.C. via a dedicated

cable or to a RS485 serial bus, thus having many relays to exchange data with a single master P.C.

using the same physical serial line. A RS485/232 converter is available on request.

The communication protocol is MODBUS RTU (only functions 3, 4 and 16 are implemented).

Each relay is identified by its programmable address code (NodeAd) and can be called from the P.C.

A dedicated communication software (MSCOM) for Windows 95/98 (or later) is available.

Please refer to the MSCOM instruction manual for more information.

Microelettrica Scientifica.

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7. DIGITAL INPUTS FOR FUNCTION BLOCKING AND FOR SETTING PROGRAM’S CHANGE-OVER

Three digital inputs are provided: they are active when the relevant terminals are shorted

terminals

1 –2

it blocks the operation of the time delayed elements relevant to phase and/or

Earth Fault detection; IL, IH, OL, OH - programming allows to block one or

more of the functions.

terminals

1 –3

it blocks the operation of the time delayed elements relevant to UNBALANCE

detection; programming allows to block the operation of the function UL only

or UH only or both.

When a function is blocked the pick-up of its time delayed output is inhibited. Programming allows to

have the inhibition either permanent as long as the blocking input is active (tBf=Dis; tBo=Dis) or

automatically removed after the expiry of the set trip time delay of the function blocked plus an additional

time 2tBF (tBf=2tBF; tBo=2tBF). By proper interconnection of the blocking inputs and different among

output relays it is possible to configurate very efficient arrangements of logic fault discrimination as well

as to feature a safe and quick breaker back-up protection.

B14

terminals

1 –14

input from 52a contact (Normally Open) of the capacitor bank Circuit Breaker

for monitoring the C/B open/close status.

8. TEST

Besides the normal "WATCHDOG" and "POWERFAIL" functions, a comprehensive program of self-test

and self-diagnostic provides:

Diagnostic and functional test, with checking of program routines and memory's content, run

every time the aux. power is switched-on: the display shows the type of relay and its version

number and then switches over to the default display.

Dynamic functional test run during normal operation every 15 min. (relay's operation is

suspended for less than 4ms).

Complete test activated by the keyboard or via the communication bus either with or without

tripping of the output relays.

If any internal fault is detected, the display shows a fault message, the Led "PROG/IRF"

illuminates and the relay R5 is deenergized.

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9. KEYBOARD AND DISPLAY OPERATION

All controls can be operated from relay's front or via serial communication bus.

The keyboard includes five hand operable buttons (MODE) - (SELECT) - (+) - (-) - (ENTER/RESET)

plus one indirect operable key (PROG) (see synoptic table a fig.1):

White key

MODE

when operated it enters one of the following operation modes

indicated on the display :

MEASURES

Reading of all the parameters measured and of those recorded

in the memory

SET DISP

Reading of the settings and of the configuration of the output

relays as programmed.

PROG

Access to the programming of the settings and of relay

configuration.

TEST PROG

Access to the manual test routines.

Green key

SELECT

When operated it selects one of the menus available in the

actual operation MODE

Red key

“+”AND “-“

When operated they allow to scroll the different information

available in the menu entered by the key SELECT and to

increase-decrease the settings.

Yellow key

ENTER/RESET

It allows the validation of the programmed settings

- the actuation of test programs

- the forcing of the default display indication

- the reset of signal Leds.

Indirect key



Enables access to the programming.

ENTER/RESET

MODE

SELECT

PROG.

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10. READING OF MEASUREMENTS AND RECORDED PARAMETERS

Enter the MODE "MEASURE", SELECT the menu "ACT.MEAS" or "LAST TRIP" or

"TRIP NUM", scroll available information by key "+" or "-" .

10.1 ACT.MEAS

Actual values as measured during the normal operation.

The values displayed are continuously refreshed.

Display

Description

I/In

xxx

Highest among the 3 phase-currents displayed as % of the rated current of T.A (0 - 999)%

xxxxx

True R.M.S. value of the current of phase A displayed as primary Amps. (0 - 99999)

xxxxx

As above, phase B

xxxxx

As above, phase C

xxxxx

As above, residual current (3 x Zero Seq. Current)

x.xx

As above, unbalance voltage displayed as p.u. of the rated input Un

u

xxxxx

Uo/IA displacement in degrees of Uo from IA (0-360° anticlockwise)

x.xx

Unbalance compensated voltage as p.u. of rated input Un

10.2 MAX VAL

Max demand values recorded starting from 100ms after closing of main Circuit Breaker plus highest

inrush values recorded within the first 100ms from Breaker closing, (updated any time the breaker

closes).

Display

Description

xx.x

Max value of phase A current after the first 100ms, displayed as p.u. of C.Ts rated current

xx.x

As above, phase B

xx.x

As above, phase C

x.xx

As above, residual current (3 x Zero Sequence current)

x.xx

As above, unbalance compensated voltage (0 –9,99)

xx.x

Highest current of phase A during the first 100ms, displayed as p.u. of C.Ts rated current

xx.x

As above, phase B

xx.x

As above, phase C

x.xx

As above, unbalance compensated voltage

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