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REM 610Technical Presentation

REM 610Motor Protection

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The Motor Protection Relay REM 610

Based on the success of

the famous SPAM series

Introduction


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Introduction

Area of application Medium.sized and large MV asynchronous (induction) motors (motors started direct on line, 50 Hz or 60 Hz)

Back-up protection of or integrated in protection schemes for synchronous motors

Circuit-breaker and contactor controlled drives

Feeder cables, power transformers and other requiring thermal overload protection and functionality included in the relay


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Introduction

Area of application cont. Low-voltage motors, typical power range 500 kW - 4 MW

Drives for ventilation & fans, crushers, conveyors, pumps, mills, etc. and applications in marine, offshore, mining and other demanding environments

Due to large number of protection functions integrated, the reliability protects the motor against damage


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Mechanical design

Basic parts

Metal case

Plastic front plate

Metal rear plate


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Mechanical design

Withdrawable relay unit

Case unit

Plug-in unit


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Mechanical design

Front plate

2 x 16 character alphanumericdisplay (LCD)

6-button keypadLocal communication port,wireless or via cable

3 pre-assigned LEDs

8 programmable LEDs


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Mechanical design

Inputs and outputs

Remote communication card

CT secondary current inputs prepared for ring-lug and scew-compression type wire connection.

Binary inputs and outputsRTD/Thermistor inputsPower supplyetc.


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Mechanical design

The CT secondaries are automatically short-circuited when the relay unit is withdrawn from the case

No need for separate short-circuiting arrangements


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Mechanical design

REM 610 product information under the handle

Easy access of type specifications and ratings


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Battery backup of the real-time clock (RTC) and memory circuits, disturbance recorder (DR), etc.

Automatically supervised and easy to change

Mechanical design


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Flush, semi-flush or surface mounting using suitable mounting accessories

Mechanical design

50 mm raising frame for semi-flush mounting


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Mechanical design

1. Left side + right side+18c rails

2. Left side x 2 + 12c rails

3. Right side x 2 + 24c rails

Mounting alternatives in COMBIFLEX equipment frames


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Mechanical design

Withdrawable mechanical designEasy to install and handleAutomatic short-circuiting of CT secondariesCommunication maintained even when relay unit withdrawnMechanical coding for identification of plug-in unit

Height 4U (~177 mm)Depth behind the panel only about 150 mm (100 mm possible!)Easy mounting - no loose mounting accessoriesBoth compression type connection and ring-lug terminal connection of CT secondary wiresIP 54 degree of protection by enclosure of the relay case when flush-mounted.


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Functionality

General50/60 Hz rated frequency

Real-time clock (chip) for time stamps

Non-volatile memory for settings (EEPROM)

Non-volatile memory for recorded fault values (battery back-up)

CT inputs for screw-compression or ring-lug type wire connection

Signal connectors for screw-compression type wire connection

Withdrawable design with automatic short-circuiting of CT secondaries

Five fault recordings with time stamps, 100 event codes for SCADA

Disturbance recorder, 5 seconds, one recording

Self-supervision of hardware and software


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Functionality

Protection functionsThermal overload protection (49)Temperature supervision based on RTDs (49/38)Motor startup supervision (48)Cumulative motor start-up time counter (66)Short-circuit protection (50)Overcurrent protection (51)Earth-fault protection (50N/51N)Phase unbalance / phase reversal protection (46)Undercurrent (loss of load) protection (37)Circuit-breaker failure protection (62BF)Electrically latched lockout relay (86)Emergency restart


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Functionality

Inputs4 analog inputs for current measurement (IL1, IL2, IL3 and I0)6 RTD inputs in two groups available with optional RTD module

RTD types can be mixed in the same module, e.g. Pt-100 and Ni-1202 thermistor (PTC) inputs can be used instead of RTDsRTDs and PTCs can be mixed, e.g. up to 4 RTDs + 2 PTCs

2 binary inputs (+ 3 additional in the optional RTD module)

Output contacts3 heavy-duty contacts capable of operating a circuit-breaker2 freely assignable signalling contacts1 pre-assigned signalling contact for IRF alarm


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Functionality

LCD, 2 x 16 charactersBuilt-in support for 7 languages: English, Finnish, Swedish, German, Spanish, French, ItalianIEC symbols / ANSI codes selectableFault indications5 fault recordings with time stampMeasurements and displays

Currents and temperaturesCalculated motor thermal capacity used and cooling time required before next motor start, etc.Historical data since commissioning, running hours, etc.

Settings in units of the motor full load current (FLC), 2 groupsConfigurations such as protocol settings, etc.Product information, identification, etc.


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Functionality

3 dedicated and 8 user-assignable LEDs + 1 dedicated LED indicating communication

Fast fault location and clearance (20 signals can be freely associated with 8 user-assignable LEDs), BI status, Restart Inhibit, Alarms, Trips…

3 dedicated LEDs for Ready, Start and Trip indication

1 dedicated LED for indicating local communication activity

Local communication port

6 push buttons

Arrow keys, Enter/Edit, Cancel/Clear


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Functionality

Self-supervision and alarmsContinuous testing of memory circuits, RAM, ROM, EEPROMSupervision of CT secondary circuits, MPX, ADCWatchdog functions for monitoring CPU operation and program excecutionInternal trip path continuity checkInternal power supply voltage drop-out check

External Trip Circuit Supervision (TCS)Temperature sensor (RTD) circuit open or short-circuitedRTD card alarmCommunication card alarmLow memory backup battery alarm Overtemperature alarm of internal power supply


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Functionality

Communication ProtocolsSPA bus communication (via front and rear port )

IEC 60870-103-5 communication (via rear port only)

Modbus communication (via rear port only)


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Communication: P = plastic fibre, R = RS - 485, N = none

RTD / thermistor card: M = included, N = noneTerminals: C = compression typePower supply: H = 100-240 Vac / 110-250 VdcEarth-fault current input: 5 = 5 A, 1 = 1 A Phase current inputs: 5 = 5 A, 1 = 1 ARevision

Ordering

Ordering key:

REM610A55HCMP


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Required information

Motor settingsMotor rated current, starting current and starting time

CT ratings

Ambient temperature in degrees Celsius or Fahrenheit


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Relay settingsNumber of hot/cold starts allowed

Type of motor: p and kc settings

Protection principles: I>> doubling, use of I2 protection, etc

Protection requirements: I>> operation time, E/F sensitivity, etc

Required information


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The software guides the user through the settings and executes the calculations required

Faster and easier calculation and selection of settings

Outputs


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Outputs

The software allows the thermal behaviour of the motor to be simulated

Verification of settings

Better understanding of protection and settings

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