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GE Multilin DBT Instruction Manual
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GE Multilin DBT Instruction Manual

Digital trip coil supervision relay
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GE Multilin
215 Anderson Avenue
L6E 1B3 Markham, ON -CANADA
Tel: (905) 294 6222 Fax: (905) 294 8512
E-mail: gemultilin@ge.com
Internet: www.gemultilin.com
GE Consumer & Industrial
Multilin
DBT
Digital Trip Coil Supervision Relay
Instruction Manual
GEK-105597C
Copyright © 2004 GE Multilin
GE Multilin
Avda. Pinoa, 10
48170 Zamudio SPAIN
Tel: +34 94 485 88 00 Fax: +34 94 485 88 45
E-mail: gemultilin.euro@ge.com

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Summary of Contents for GE Multilin DBT

  • Page 1 GE Consumer & Industrial Multilin Digital Trip Coil Supervision Relay Instruction Manual GEK-105597C Copyright © 2004 GE Multilin GE Multilin GE Multilin Avda. Pinoa, 10 215 Anderson Avenue 48170 Zamudio SPAIN L6E 1B3 Markham, ON -CANADA Tel: +34 94 485 88 00 Fax: +34 94 485 88 45 Tel: (905) 294 6222 Fax: (905) 294 8512 E-mail: gemultilin.euro@ge.com...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS 1. DESCRIPTION 2. APPLICATION 2.1 DIRECT CONNECTION TO COIL 2.2 USE AS A DC UNDERVOLTAGE RELAY 2.3 DIFFERENT CONNECTIONS FOR INDEPENDENT BATTERIES 2.4 RECOMMENDED SETTINGS 3. MODEL LIST 4. OPERATING PRINCIPLES 5. TECHNICAL CHARACTERISTICS 5.1 TECHNICAL CHARACTERISTICS 5.3 TYPE TESTS 6.
  • Page 3 TABLE OF CONTENTS LIST OF FIGURES Figure 1 Nameplate (226B1298H3) Figure 2 External connections - one coil model (226B6291H5) Figure 3 External connections - three coils model(226B6291H4) Figure 4 External connections – model DBT3000A*0H02 (226B6291H6) Figure 5 Mechanical dimensions and cut-out (226B6086H11) Figure 6 Rear terminal plate (226B6292H1) Figure 7...

  • Page 4: Description

    DESCRIPTION 1. DESCRIPTION The DBT is a digital trip coil supervision relay. This supervision includes: • Integrity of coils (monitoring continuously their resistance). In case coils are in a good condition, the output COIL OK will be activated. • Control voltage (supervision of low voltage). If voltage is correct, the output BREAKER VOLTAGE OK will be activated.
  • Page 5 DESCRIPTION DBT Digital Trip Coil Supervision Relay GEK-105597C...

  • Page 6: Application

    APPLICATION 2. APPLICATION The DBT has been designed to monitor the biggest possible number of elements in the tripping and closing circuits of the breaker. The relay checks voltages, coil resistance and the integrity of the auxiliary contacts 52/a and 52/b, since they are also part of the trip and close circuits of the breaker.

  • Page 7: Recommended Settings

    APPLICATION 2.4 RECOMMENDED SETTINGS This section is only included for customer information, given the importance of the right choice of settings to ensure good protection and a range of possible applications. Resistance Because the coil is made of copper its resistance varies considerably with temperature. The temperature coefficient of copper is approximately 0.43%/ºC (see UNE 20-003 “Annealed and industrial copper for electrical applications”).

  • Page 8: Model List

    MODEL LIST 3. MODEL LIST The data required to fully define a model are those shown in the chart below. The possible models are: DESCRIPTION Number of coils 1 coil (single-phase) 3 coils (three-phase) Coil resistance 75-300 Ohm 150-600 Ohm Breaker Voltage 110/125 V DC 220/250 V DC...
  • Page 9 MODEL LIST DBT Digital Trip Coil Supervision Relay GEK-105597C...

  • Page 10: Operating Principles

    OPERATING PRINCIPLES 4. OPERATING PRINCIPLES Figure 7 (Block diagram) shows the basic operation of the DBT (the most common case of a 3-phase version). Seven units of measurement can be seen: 1. Voltage measurement for undervoltage function of breaker power supply. 2.
  • Page 11 OPERATING PRINCIPLES Internal setting In the 3 coils DBT model, there is an internal setting which can be made by moving a jumper in the printed circuit, that allows to configure all the outputs as general ones (BREAKER CIRCUIT OK). Any failure (undervoltage or resistance) will mean that all outputs will be deactivated.

  • Page 12: Technical Characteristics

    TECHNICAL CHARACTERISTICS 5. TECHNICAL CHARACTERISTICS 5.1 TECHNICAL CHARACTERISTICS • AUXILIARY SUPPLY A ripple factor is allowed provided that the instantaneous voltage does not exceed the indicated upper and lower limits. For example, on the 110-125 V model the voltage at any given time should never drop below 88 V nor go above 150 V.

  • Page 13: Type Tests

    TECHNICAL CHARACTERISTICS • WEIGHTS Net: 3 kg Packed: 4 kg • WATERTIGHTNESS Index: IP51 • DIMENSIONS Width: 483 mm (19” rack) Depth: 200 mm Height: 45 mm (1 height unit) • INSULATION As per IEC 255-5. Between terminal and case: 2000 V AC for 1 minute at industrial frequency.
  • Page 14 Shock test As per IEC 255-21-2, class II. The DBT relay complies with these Standards, which includes the GE Standard on the level of insulation and electromagnetic compatibility required by CE Directive 89/336 for CE marking, according to standardised European regulations.
  • Page 15 TECHNICAL CHARACTERISTICS DBT Digital Trip Coil Supervision Relay GEK-105597C...

  • Page 16: Relay Settings

    RELAY SETTINGS 6. RELAY SETTINGS The settings are located on the relay’s nameplate in the form of dip switches. Their meanings are printed, indicating ranges in addition to the functions. In the DBT3000 there is an internal setting. This setting enables individual or general selection of the output relays.

  • Page 17: Enable' Switch

    RELAY SETTINGS 6.2 ‘ENABLE’ SWITCH This switch has two positions: - Left: relay disabled, READY LED will go red. - Right: enabled relay, the READY LED goes green, provided none of the external disabling inputs are active. At the back of the relay there are digital disabling inputs on terminals C1-D1, C2-D2, C3-D3 and C4-D4 (3- phase model) and C1-D1 for the single-phase model (see Figure 6: Rear terminal plate).

  • Page 18: Coil Resistance Setting

    RELAY SETTINGS 6.5 COIL RESISTANCE SETTING This is the coil failure circuit threshold. It is a block of 4 dip switches. The minimum value is 75 Ω, the maximum 300 Ω and the step 15 Ω. For example, if a setting of 150 Ω is required, put dip switches 1 and 3 in the UP position. You then have: 75 + 15 + 60 = 150.

  • Page 19: Summary Table Of Settings

    RELAY SETTINGS 6.8 SUMMARY TABLE OF SETTINGS Name of setting Max. Min. Step Set to Enable Enabled Disabled ____ Enabled ____ Disabled 300 Ω 75 Ω 15 Ω _____ Ω Resistance Voltage 110/250 model 125 V 50 V _______ V 220/250 model 250 V 100V...

  • Page 20: Reception Tests

    RECEPTION TESTS 7. RECEPTION TESTS 7.1 VISUAL INSPECTION Check that the information on the nameplate coincides with the details of the order. A check should also be made to ensure that the relay is not scratched or has received impacts, and that there are no loose parts as a result of bad handling in transit.

  • Page 21: Trip Level Test

    RECEPTION TESTS 7.3 TRIP LEVEL TEST Connect the relay as indicated in the external connections diagram (Figs. 2 & 3), using a DC power supply (110/125 or 220/250 V) for the auxiliary voltage (terminals B9-B10), according to the model. Variations of ±20% are admitted (- 20% of the minimum and +20% of the maximum).

  • Page 22: Time Delay Test

    RECEPTION TESTS 7.4 TIME DELAY TEST The check the tripping time the loss of continuity of the coil connected to terminals B2 and B3 will be simulated. Insert a dual-circuit switch. One of the circuits CLOCK which is normally closed will short-circuit terminals B2 and B3, simulating that the coil is correct.

  • Page 23: Resistance Measurement Test

    RECEPTION TESTS 7.5 RESISTANCE MEASUREMENT TEST To carry out this test, which is done on the measuring unit of coil 1, disconnect terminal B4 and leave it unconnected (simulating an open circuit). Place a resistor (simulating the breaker coil) between terminals B2 and B3. This resistance should give the readings indicated in the table below.

  • Page 24: Figure 1 Nameplate (226B1298H3)

    FIGURES FIGURE 1: NAMEPLATE (226B1298H3) GEK-105597C DBT Digital Trip Coil Supervision Relay...
  • Page 25 FIGURES (PUEDEN SER POSITIVOS SEPARADOS) CAN BE CONNECTED TO ISOLATED CIRCUITS LOGICA CONTACTOS: CONTACT LOGIC SIN Vaux NO Vaux Vaux y Fallo Vaux & Fail Vaux y NO Fallo Vaux & No Fail TENSION MANDO O= OPEN / ABIERTO BREAKER VOLTAGE C= CLOSED / CERRADO TRIP ALARMA EQUIPO...
  • Page 26 FIGURES FIGURE 3: EXTERNAL CONNECTIONS – THREE COILS (226B6291H4) GEK-105597C DBT Digital Trip Coil Supervision Relay...

  • Page 27: Figure 4 External Connections - Model Dbt3000A*0H02 (226B6291H6)

    FIGURES FIGURE 4: EXTERNAL CONNECTIONS – MODEL DBT3000A*0H02 (226B6291H6) DBT Digital Trip Coil Supervision Relay GEK-105597C...

  • Page 28: Figure 5 Mechanical Dimensions And Cut-Out (226B6086H11)

    FIGURES FIGURE 5: MECHANICAL DIMENSIONS AND CUT-OUT (226B6086H11) GEK-105597C DBT Digital Trip Coil Supervision Relay...

  • Page 29: Figure 6 Rear Terminal Plate (226B6292H1)

    FIGURES FIGURE 6. REAR TERMINAL PLATE (226B6292H1) DBT Digital Trip Coil Supervision Relay GEK-105597C...

  • Page 30: Figure 7 Block Diagram (226B2209H1)

    FIGURES FIGURE 7: BLOCK DIAGRAM GEK-105597C DBT Digital Trip Coil Supervision Relay...

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