Basler Electric BE1-50/51B-219 User Manual

INSTRUCTION MANUA L

BE1-50/51B-219

OVERCURRENT

RELAY

FOR

BE1-50/51B-219/-226

Overcurrent Relays

Publication: 9252000981 Revision: J Oct-14

9252000981 Rev J i

Caution

Note

Preface

This instruction manual provides information about the installation and operat io n of the BE1-50/51B-219 and BE1-50/51B-226 Overcurrent Relays. To accomplish this, the following information is provided:

• General information

• Controls and indicators

• Functional description

• Installation

• Testing

• Specifications

• Time Characteristic Curves

Conventions Used in this Ma nua l

Important safety and procedural information is emphasized and presented in this manual through warning, caution, and note boxes. Each type is illustrated and defined as follows.

Warning!

Warning boxes call attention to conditions or actions that may cause personal injury or death.

Caution boxes call attention to operating conditions that may lead to equipment or property damage.

Note boxes emphasize important information pertaining to installation or operation.

BE1-50/51B-219/-226 Preface

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Basler Electric does not assume any responsibility to compliance or noncompliance with national code, local code, For terms of service relating to this product and software, see the Commercial Terms of Products and Services

document available at www.basler.com/terms.

This publication contains confidential information of Basler Electric Company, an Illinois corporation. It is loaned for

manual.

The English-language version of this manual serves as the only approved manual version.

12570 State Route 143

Highland IL 62249-1074 USA

www.basler.com

info@basler.com

Tel: +1 618.654.2341

Fax: +1 618.654.2351

First printing: June 1996

Warning!

READ THIS MANUAL. Read this manual before installing, operating, or maintaining the BE1-50/51B-

219/-226. Note all warnings, cautions, and notes in this manual as well as on the product. Keep this manual with the product for reference. Only qualified personnel should install, operate, or service this system. Failure to follow warning and cautionary labels may result in personal injury or property damage. Exercise caution at all times.

or any other applicable code. This manual serves as reference material that must be well understood prior to installation, operation, or maintenance.

confidential use, subject to return on request, and with the mutual understanding that it will not be used in any manner detrimental to the interests of Basler Electric Company and used strictly for the purpose intended.

It is not the intention of this manual to cover all details and variations in equipment, nor doe s this man ual prov ide data for every possible contingency regarding installation or operation. The availability and design of all features and options are subject to modification without notice. Over time, improvements and revisions may be made to this publication. Before performing any of the following procedures, contact Basler Electric for the latest revision of this

Preface BE1-50/51B-219/-226

9252000981 Rev J iii

Introduction ................................................................................................................................................. 1

Features .................................................................................................................................................... 1

Advantages ................................................................................................................................................ 2

Controls and Indicators .............................................................................................................................. 3

Functional Description ............................................................................................................................... 7

Sensing Input ......................................................................................................................................... 7

Power Supply ......................................................................................................................................... 7

Instantaneous Signal ............................................................................................................................. 7

Time Signal ............................................................................................................................................ 7

Microprocessor ...................................................................................................................................... 7

Power-Off Sensing ................................................................................................................................. 7

Outputs .................................................................................................................................................. 8

Installation ................................................................................................................................................... 9

Factory Settings ......................................................................................................................................... 9

Installation ................................................................................................................................................. 9

Application Coordination............................................................................................................................ 9

Connections ............................................................................................................................................. 11

Maintenance ............................................................................................................................................ 12

Storage .................................................................................................................................................... 12

Testing ........................................................................................................................................................ 13

Dielectric Test .......................................................................................................................................... 13

Operational Test Procedure .................................................................................................................... 13

Test Equipment Required .................................................................................................................... 13

Test Procedure, Model BE1-50/51B-219 (Five-Ampere Sensing Input) ............................................. 15

Test Procedure, Model BE1-50/51B-226 (One Ampere Sensing Input) .............................................. 17

Setting the Relay ..................................................................................................................................... 19

Periodic Tests .......................................................................................................................................... 19

General ................................................................................................................................................ 19

Periodic Test ........................................................................................................................................ 19

Specifications ............................................................................................................................................ 21

Current Sensing Input.............................................................................................................................. 21

BE1-50/51B-219 .................................................................................................................................. 21

BE1-50/51B-226 .................................................................................................................................. 21

Time Overcurrent (51) Element ............................................................................................................... 21

BE1-50/51B-219 Pickup ....................................................................................................................... 21

BE1-50/51B-226 Pickup ....................................................................................................................... 21

Dropout ................................................................................................................................................ 21

Timing Range ....................................................................................................................................... 21

Timing Accuracy .................................................................................................................................. 21

Timing Accuracy Example (BE1-50/51B-219) ..................................................................................... 21

Curve Characteristics ........................................................................................................................... 22

Integrating Reset .................................................................................................................................. 23

Instantaneous Overcurrent (50) Element ................................................................................................ 24

BE1-50/51B-219 Pickup ....................................................................................................................... 24

BE1-50/51B-226 Pickup ....................................................................................................................... 24

Dropout ................................................................................................................................................ 24

Curve Characteristics ........................................................................................................................... 24

Burden ..................................................................................................................................................... 25

BE1-50/51B-219 .................................................................................................................................. 25

BE1-50/51B-226 .................................................................................................................................. 26

Frequency Response .............................................................................................................................. 26

Transient Response ................................................................................................................................ 26

Harmonic Response ................................................................................................................................ 27

Target Indicators ...................................................................................................................................... 27

BE1-50/51B-219/-226 Contents

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Output Contacts ....................................................................................................................................... 27

Resistive Ratings ................................................................................................................................. 27

Inductive Ratings ................................................................................................................................. 27

Type Tests ............................................................................................................................................... 28

Isolation ................................................................................................................................................ 28

Surge Withstand Capability ................................................................................................................. 28

Radio Frequency Interference (RFI) .................................................................................................... 28

Vibration ............................................................................................................................................... 28

Shock ................................................................................................................................................... 28

Environment ............................................................................................................................................ 28

Agency Recognition ................................................................................................................................. 28

GOST-R Certification ........................................................................................................................... 28

Physical ................................................................................................................................................... 28

Time Characteristic Curves...................................................................................................................... 29

Revision History ........................................................................................................................................ 43

Contents BE1-50/51B-219/-226

9252000981 Rev J 1

ABB Catalog Number

Curve Type

CO-6∗11∗1N

CO-11∗11∗1N

Extremely Inverse

Introduction

BE1-50/51B-219 and BE1-50/51B-226 protective relays are direct replacements for Westinghouse/ABB type CO relays. The BE1-50/51B-219 has a 5-ampere current sensing input. The BE1-50/51B-226 has a 1-ampere current sensing input. Specific relays by catalog number are listed in Table 1.

Table 1. ABB Relays Suitable for Direct Replacement

CO-2∗11∗1N CO-5∗11∗1N

CO-7∗11∗1N CO-8∗11∗1N CO-9∗11∗1N

∗ Any digit covering all pickup ranges and 50 Hz or 60 Hz models.

To replace an existing Westinghouse/ABB type CO (hereinafter referred to as ABB relay), perform the following steps:

1. Select the desired relay settings on your new BE1-50/51B-219 or BE1-50/51B-226 relay.

2. Remove the existing ABB relay cradle.

3. Insert the new relay cradle.

4. Close the knife-blade switches.

5. Install the new Basler Electric cover and secure with the captive thumbnut.

Basler Electric BE1-50/51B-219 and BE1-50/51B-226 protective relays are self-powered, microprocessorbased, non-directional phase or ground relays that monitor the magnitude of a single-phase ac current to provide accurate instantaneous and time overcurrent protection for 50- or 60-hertz power systems. Each model covers 15 popular time characteristics, a wide range of pickup settings, and field-selectable instantaneous or integrating reset.

Short Time Long Time Definite Moderately Inverse Inverse Very Inverse

Features

A wide range of pickup settings and front-panel-selectable time characteristics permit applications involving coordination with fuses, reclosers, cold-load pickup, motor starting, and fixed-time requirements. Also, an integrating reset function is available to simulate the disk reset of electromechanical relays.

BE1-50/51B-219 and BE1-50/51B-226 overcurrent relays have the following standard features:

BE1-50/51B-219/-226 Introduction

• Independent time and instantaneous elements

• A secure method to manually trip the breaker at the relay front panel

• Direct reading front-panel controls

• Minimum pickup setting for safety during installation

• Time characteristics extend to a pickup multiple of 40

• Rugged draw-out construction with steel case

• Gravity-latching targets retain indication without power

• Built-in accuracy eliminates internal adjustments

• Minimum transient overreach

• Field-selectable characteristic curve selection similar to either GE IAC or ABB type curves

• Field-selectable instantaneous or integrating reset

• Field-selectable 50- or 60-hertz operation

• Field-selectable 0.0 or 0.1 second, fixed, instantaneous delay

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Internal switches provide for selecting system operating frequencies of 50- or 60-hertz, instantaneous element delays of 0.0 or 0.1 second, characteristic curve group selection for either ABB CO or GE IAC type curves, and instantaneous or integrating reset characteristics. Switch location and description is provided in the Controls and Indicators chapter.

Advantages

BE1-50/51B-219 and BE1-50/51B-226 overcurrent relays have many advantages over other overcurrent relays. The primary advantages are:

• Time characteristics are defined by equations and graphs

• Field-selectable time characteristics

• Very low burden extends the linear range of the CTs

• Self powered from the sensed current

• Continuous automatic calibration

BE1-50/51B-219 and BE1-50/51B-226 overcurrent relays may be tested without removing the relay from the case. Shorting contacts are provided for all current inputs when the connection plugs or relay chassis is removed from the relay case.

Introduction BE1-50/51B-219/-226

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P0052-60

Controls and Indicators

Figure 1 illustrates the front-panel controls and indicators of the BE1-50/51B-219 and BE1-50/51B-226. Figure 2 illustrates the location of switch SW3. Both illustrations have lettered call-outs that correspond to the control and indicator descriptions provided in Table 2.

Figure 1. Front Panel Controls and Indicators

BE1-50/51B-219/-226 Controls and Indicators

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P0053-50

SW3

Figure 2. Location of SW3

Controls and Indicators BE1-50/51B-219/-226

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Table 2. BE1-50/51B-219 and BE1-50/51B-226 Controls and Indicators (Refer to Figures 1 and 2)

Locator Control or Indicator Function

INST MANUAL TRIP

Test Points

INST PICKUP

Selectors

C Targets

TIME PICKUP

Selectors

E CURVE Selector

F TIME DIAL Selectors

TIME MANUAL TRIP

Test Points

When shorted, the test points (jacks) provide a secure means to manually trip the controlled breaker. Jacks accept a standard 0.08 inch diameter phone tip plug.

Two switches (TENS and UNITS) to select pickup current in amperes. Changing switch selectors while the relay is in service may cause tripping.

Red target indicators latch when the trip circuit current is greater than 0.2 amperes. One target each for TIME and INST.

Two switches (UNITS and TENTHS) to select pickup current in amperes. Changing switch selectors while the relay is in service may cause tripping.

Ten-position selector switch to select one of nine inverse functions or one fixed-time function.

Two selector switches (UNITS and TENTHS) to select the desired characteristic curve. A setting of 0.0 results in instantaneous operation without any intentional delay. A setting of 9.9 corresponds to the typical time provided by an electromechanical relay at its maximum dial setting.

When shorted, the test points provide a secure means to manually trip the controlled breaker. Jacks accept a standard 0.08 inch diameter phone tip plug.

H ACTIVE/PICKUP LED

I Target Reset Button

This bicolor LED indicates the level of current sensed by the relay. A green LED indicates that the relay is active but not picked up. The LED changes to red when the sensed current exceeds the time overcurrent pickup setting and back to green when the sensed current decreases below 95% of the time overcurrent pickup setting.

Note: A minimum of 0.5 A (5A units) or 0.1 A (1A units) is required to light the LED. The LED may not turn green (active) before turning red (picked up) at the 0.5 A pickup setting on 5A units or

0.1 A pickup setting on 1A units. Linkage extends through back of front cover to reset both gravity

latched target indicators.

BE1-50/51B-219/-226 Controls and Indicators

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Locator Control or Indicator Function

SW3 ∗

∗ NOTE: In BE1-50/51B-219 Revision F and previous relays and BE1-50/51B-226 Revision I and previous relays, switch SW3 is designated as SW8.

SW3-1

SW3-2

SW3-3

SW3-4

SW3-1 selects the system operating frequency. SW3-1 open (OFF) selects 60 Hz operation. SW3-1 closed (ON) selects 50 Hz operation.

SW3-2 provides additional time delay for the instantaneous element. Closing switch SW3-2 (ON) provides an additional instantaneous delay of 0.1 second.

SW3-3 provides selection of GE IAC type curves or ABB type curves. Closing sw itch SW3-3 (ON) selects GE IAC type curves (refer to the Specifications chapter). Opening switch SW3-3 (OFF) selects ABB type curves (refer to the Specifications chapter).

SW3-4 provides selection of either instantaneous or integrating reset characteristics. Closing SW3-4 (ON) selects integrating reset characteristics. Opening SW3-4 (OFF) selects instantaneous reset characteristics.

Controls and Indicators BE1-50/51B-219/-226

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Functional Description

BE1-50/51B-219 and BE1-50/51B-226 Overcurrent Relays are microprocessor based non-directional relays that measure ac current to provide secure and reliable instantaneous and time overcurrent protection for power systems.

Functional Descripti on

Sensing Input

Single-phase ac current from system current transformers (CTs) is brought into the Overcurrent Relay at terminals 8 and 9. Refer to Figure 3 to follow the functional description. The input current is applied to internal power and signal CTs.

Power Supply

Current from the power CT is rectified, filtered, and supplied to all relay internal circuitry for operating power. A precision +5 Vdc supply also serves as a reference for automatic calibration.

Instantaneous Signal

Current from the signal CT is rectified and applied to the instantaneous scaling resistors controlled by the INST PICKUP selector switches. The analog voltage of the instantaneous input signal developed across the scaling resistors is filtered and applied to the multiplexor (MUX).

Time Signal

Current from the signal CT is also rectified and applied to the time scaling resistors controlled by the TIME PICKUP selector switches. The analog voltage of the time input signal is also filtered and applied to the multiplexor.

Microprocessor

Operating power from the power supply is applied to the microprocessor supervisor circuit. When the microprocessor is active and executing code, the ACTIVE/PICKUP LED is green. When the input current falls below an acceptable level, the supervisor circuit interrupts the microprocessor, halts further operation, and turns OFF the ACTIVE/PICKUP LED. A microprocessor watchdog feature resets the microprocessor program when the program flow is interrupted.

Information from the TIME DIAL selector switches, the TIME CURVE selector switch, and the 50/60 Hz, INST DELAY, and RESET CHAR switches is also applied to the microprocessor. The microprocessor uses these inputs to set the operating parameters.

When the microprocessor is ready for analog information from the multiplexor, microprocessor control signals cause the multiplexor to route the desired input through to the output. The output is converted from an analog value to a digital value and applied to the microprocessor.

The microprocessor performs the program operations based on the inputs and the internal software program. When the sensed current exceeds the TIME PICKUP setting, the ACTIVE/PICKUP LED turns from green to red. TIME contacts (51) are closed in accordance with the time characteristic equation. If the sensed current exceeds the INST PICKUP setting, the INST contacts (50) are closed.

Power-Off Sensing

Power-off sensing circuits measure the voltage across a capacitor at power-down and at power-up. These circuits determine how long power has been removed based on the difference voltage and the circuit RC time constant. This provides information for the integrating reset function even when power has been entirely removed.

BE1-50/51B-219/-226 Functional Description

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Warning!

Trip-circuit voltage is present at the front-panel test points. When these voltages.

Outputs

Instantaneous and Timed

System circuit breakers controlled by the output contacts can be manually tripped by applying a short across the TIME or INST MANUAL TRIP front-panel test points. Current flow in the trip circuit is indicated by the operation of the target. The targets will not operate without adequate operating power for the relay.

shorting the test points, use insulated jumpers to avoid contact with

Figure 3. Functional Block Diagram

Functional Description BE1-50/51B-219/-226

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Caution

Close all BLACK handle switches before closing any RED handle switches. Insure that the RED handle switches are closed last.

Installation

When not shipped as part of a control or switchgear panel, the relays are shipped in sturdy cartons to prevent damage during transit. Immediately upon receipt of a relay, check the model and part num ber against the requisition and packing list to verify that they agree. Visually inspect the relay for damage that may have occurred during shipment. If there is evidence of damage, immediately file a claim with the carrier and notify the Regional Sales Office, or contact the Sales Representative at Basler Electric, Highland, Illinois.

Proper operation of the relay may be confirmed by performing the operational test procedure in the

Testing chapter. If the relay won't be installed immediately, store the relay in its original shipping carton in

a moisture and dust-free environme nt.

Factory Settings

Factory settings for the internal switches of SW3 are as follows:

• SW3-1 — OFF (60-hertz operation).

• SW3-2 — OFF (0.0 additional fixed delay for the instantaneous element).

• SW3-3 — OFF (Westinghouse/ABB type characteristic curves).

• SW3-4 — ON (Integrating reset characteristics).

Installation

Select the desired relay settings before putting the relay into service. Changing pickup current settings while the relay is in service may cause tripping. Perform the following procedures to install the BE150/51B-219 or BE1-50/51B-226 relay:

• Select the desired relay settings on your new BE1-50/51B-219/-226 relay.

• Remove the existing ABB relay cradle.

• Insert the new relay cradle and close the cradle latches locking the relay into the case.

• Close knife-blade switches.

• To install the cover, pos ition the interlocki ng bracket at the top of t he new Basler Electric c over into

the mating receptacle at the top of the case. Secure the captive fastener at the bottom of the cover.

Application Coordinat ion

In a typical application coordination scheme, a BE1-50/51B-219 or BE1-50/51B-226 is being used to provide primary protection for a radial distribution feeder. An electromechanical overcurrent relay with extremely inverse timing provides protection for the transformer and bus. To improve coordination with the electromechanical relay, the BE1 relay with integrating reset characteristic has the time characteristic curve E (extremely inverse) selected (SW3-3 set to OFF) and the TIME DIAL set to 2.0. The feeder reclosing relay is set for two reclose attempts at 3 and 15 seconds after the initial trip. If a permanent fault occurs (magnitude ten times pickup), calculate the feeder breaker trip time for each of the three operations. Refer to the Specifications chapter for characteristic curve constants.

BE1-50/51B-219/-226 Installation

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KBD

Trip

−

( )

028

02758.

110

27624

09382

×+

−

028

05516.

10806124

524815

−

seconds 0.209=

Reset

−

seconds 15.5

27.75

−=

−

From the time characteristic curve equation:

From the reset characteristic curve equation:

M = 0 if current goes to zero. Negative result indicates reset time.

Results: Full trip = 0.209 seconds and full reset = 15.5 seconds if current goes to zero.

In Figure 4, T

= 0.209 seconds (relay was at reset).

= value < TA because rewind has not gone to zero.

Figure 4. Coordination Timing Diagram

Installation BE1-50/51B-219/-226

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