Basler Electric BE1-50/51B-244 User Manual

INSTRUCTION MANUAL

FOR

OVERCURRENT RELAYS

BE1-50/51B-244

INSTTIME

ACTIVE/PICKUP

TIME DIAL

TENTHSUNITS CURVE

PICKUP

(0.5 MIN. SET)

TENTHSUNITS

BE1-50/51B-244

OVERCURRENT

RELAY

PICKUP

INSTTIME

P0064-38

UNITSTENS

Publication: 9252000793 Revision: C 12/11

INTRODUCTION

This instruction manual provides information about the operation and installation of the BE1-50/51B-244 Overcurrent Relay. To accomplish this, the following information is provided:

 General Information and Specifications  Controls and Indicators  Functional Description  Installation and Maintenance  Testing

WARNING!

To avoid personal injury or equipment damage, only qualified personnel should perform the procedures in this manual.

NOTE

Be sure that the relay is hard-wired to earth ground with no smaller than 12 AWG copper wire attached to the ground terminal on the rear of the unit case. When the relay is configured in a system with other devices, it is recommended to use a separate lead to the ground bus from each unit..

9252000793 Rev C BE1-50/51B-244 Introduction i

First Printing: March 2011

Printed in USA

December 2011

CONFIDENTIAL INFORMATION

of Basler Electric, Highland Illinois, USA. It is loaned for confidential use, subject to return on request, and with the mutual understanding that it will not be used in any manner detrimental to the interest of Basler Electric.

It is not the intention of this manual to cover all details and variations in equipment, nor does this manual provide data for every possible contingency regarding installation or operation. The availability and design of all features and options are subject to modification without notice. Should further information be required, contact Basler Electric.

BASLER ELECTRIC

12570 STATE ROUTE 143

HIGHLAND IL 62249 USA

http://www.basler.com, info@basler.com

PHONE +1 618.654.2341 FAX +1 618.654.2351

ii BE1-50/51B-244 Introduction 9252000793 Rev C

REVISION HISTORY

The following information provides a historical summary of the changes made to this instruction manual (9252000793). Revisions are listed in reverse chronological order.

Manual

Revision and Date

C, 12/11

B, 05/11

A, 04/11

—, 03/11

 Clarified target operate current specs in Sections 1 and 2.  Replaced Figure 4-3, Outline Dimensions, FT21 case.

 Replaced Figures 4-2, 4-3, and 4-6. Removed terminal 7 and the

 Replaced Figures 4-2, 4-3, and 4-6. Added terminal 7 and a

 Initial release

Change

connection between terminal 7 and ground.

9252000793 Rev C BE1-50/51B-244 Introduction iii

iv BE1-50/51B-244 Introduction 9252000793 Rev C

SECTION 1 • GENERAL INFORMATION ................................................................................................ 1-1

SECTION 2 • CONTROLS AND INDICATORS ........................................................................................ 2-1

SECTION 3 • FUNCTIONAL DESCRIPTION ........................................................................................... 3-1

SECTION 4 • INSTALLATION .................................................................................................................. 4-1

SECTION 5 • TESTING ............................................................................................................................ 5-1

APPENDIX A • CHARACTERISTIC CURVES ......................................................................................... A-1

9252000793 Rev C BE1-50/51B-244 Introduction v

vi BE1-50/51B-244 Introduction 9252000793 Rev C

SECTION 1 • GENERAL INFORMATION

TABLE OF CONTENTS

SECTION 1 • GENERAL INFORMATION ................................................................................................ 1-1

Introduction ............................................................................................................................................ 1-1

Features ................................................................................................................................................. 1-1

Advantages ........................................................................................................................................ 1-2

Specifications ......................................................................................................................................... 1-2

Time Overcurrent (51) Element .......................................................................................................... 1-2

Instantaneous Overcurrent A (50-A) Element .................................................................................... 1-2

Instantaneous Overcurrent B (50-B) Element .................................................................................... 1-3

Current Sensing Input ........................................................................................................................ 1-3

Frequency Response ......................................................................................................................... 1-4

Transient Response ........................................................................................................................... 1-4

Harmonic Rejection ............................................................................................................................ 1-4

Target Indicators ................................................................................................................................ 1-5

Output Contacts ................................................................................................................................. 1-5

Type Tests .......................................................................................................................................... 1-5

Environment ....................................................................................................................................... 1-5

Agency Recognition ........................................................................................................................... 1-5

Physical .............................................................................................................................................. 1-5

Figures

Figure 1-1. Current Sensing Input Derating Curve (BE1-50/51B-244) ...................................................... 1-3

Figure 1-2. Current Sensing Input Burden (BE1-50/51B-244) Figure 1-3. Harmonic Rejection

.................................................................. 1-4

................................................................................................................. 1-4

Tables

Table 1-1. Westinghouse Relays Suitable for Direct Replacement .......................................................... 1-1

9252000793 Rev C BE1-50/51B-244 General Information i

ii BE1-50/51B-244 General Information 9252000793 Rev C

SECTION 1 • GENERAL INFORMATION

Introduction

BE1-50/51B-244 protective relays are direct replacements for Westinghouse type CO relays. The BE150/51B-244 has a 5-ampere current sensing input. The BE1-50/51B-244 is provided with a case that fits into an FT-11 cutout or an FT-21 cutout with an adapter plate (Basler P/N 9252017005). A cover is also provided. Compatible Westinghouse model numbers are listed in Table 1-1.

Table 1-1. Westinghouse Relays Suitable for Direct Replacement

ABB Catalog Number Curve Type

CO-2∗11∗1N

CO-5∗11∗1N

CO-6∗11∗1N

CO-7∗11∗1N

CO-8∗11∗1N

CO-9∗11∗1N

CO-11∗11∗1N

∗ Any digit covering all pickup ranges except 50 Hz models.

To replace an existing Westinghouse type CO relay, perform the following steps:

1. Select the desired relay settings on your new BE1-50/51B-244 relay.

2. Remove the existing relay and case.

3. Insert the new relay and case.

4. Install the connection plug.

5. Install the cover and secure with the captive thumbnut.

BE1-50/51B-244 relays are self-powered, compatible with 50 or 60 Hz power systems, and have three protection elements: one time overcurrent (51) element and two instantaneous overcurrent (50) elements. The 51 element offers timing characteristic curves similar to those used by GE IAC relays.

Short Time

Long Time

Definite

Moderately Inverse

Inverse

Very Inverse

Extremely 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. In addition, an integrating reset function is available to simulate the disk reset of electromechanical relays.

BE1-50/51B-244 overcurrent relays have the following standard features:

• 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 GE IAC or Westinghouse CO type curves

• Field selectable instantaneous or integrating reset

• Field selectable 50 or 60 Hz operation

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

Internal switches provide for selecting system-operating frequencies of 50 or 60 Hz, instantaneous element delays of 0.0 or 0.1 second, characteristic curve group selection for either GE IAC or

9252000793 Rev C BE1-50/51B-244 General Information 1-1

Westinghouse CO type curves, and instantaneous or integrating reset characteristics. Switch location and description is provided in Section 2.

Advantages

BE1-50/51B-244 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-244 overcurrent relays may be tested without removing the relay from the case. Shorting contacts are provided for all current inputs when the connection plug is removed from the relay case.

Specifications

BE1-50/51B-244 electrical and physical specifications are listed in the following paragraphs.

Time Overcurrent (51) Element

BE1-50/51B-244 Pickup

Setting Range: 0.5 to 15.9 Aac Setting Increment: 0.1 Aac Accuracy: Sum of ±2% and ±25 mAac

Dropout

Dropout occurs at 95% of pickup value.

Characteristic Curves

Available curve types follow IEEE Standard C37.112 (1996) and emulate standard GE IAC, Westinghouse CO, and BS142 curves. Appendix A, Characteristic Curves illustrates the available curves and lists the applicable constants.

Curve Types: Short Inverse, Long Inverse, Definite Time, Moderately Inverse, Inverse,

Very Inverse, Extremely Inverse, BS142 Very Inverse, BS142 Extremely

Inverse, Fixed Time Time Multiplier: 11 curves for each characteristic Timing Accuracy: ±1 cycle, ±2%. This accuracy applies to the range of 1.3 to 40 times tap

and is for a given measured multiple of tap.

Fixed Timing

Setting Range: 0.1 to 9.9 s Setting Increment: 0.1 s Timing Accuracy: ±1 cycle, ±2% of the time to trip for time dial settings ≥ 0.1.

Reset

Integrating: Simulates the disk reset of electromechanical relays and begins when

the current decreases below 95% of pickup. Appendix A, Characteristic

Curves illustrates the integrating reset characteristic curve and equation. Instantaneous: Reset occurs within 16 ms of when the current decreases below 95% of

the pickup level.

Instantaneous Overcurrent A (50-A) Element

BE1-50/51B-244 Pickup

Setting Range: 2 to 99 Aac Setting increment: 1 Aac Accuracy: Sum of ±2% and ±25 mAac

Dropout

Dropout occurs at 95% of pickup value.

1-2 BE1-50/51B-244 General Information 9252000793 Rev C

Time Delay

Continuous Current

Current Sensing Input

-40 -20 0 20 40 60

Ambient Temperature (C)

Current (Aac)

Switch selectable—no intentional delay (SW3-2 OFF) or a fixed delay of 100 ms (SW3-2 ON). Appendix A, Characteristic Curves illustrates the characteristic curve for the 50-A and 50-B elements.

Instantaneous Overcurrent B (50-B) Element

BE1-50/51B-244 Pickup

Setting Range: 1 to 15.9 Aac Setting increment: 0.1 Aac Accuracy: Sum of ±2% and ±25 mAac

Dropout

Dropout occurs at 95% of pickup value.

Time Delay

Fixed at no intentional delay. Appendix A, Characteristic Curves illustrates the characteristic curve for the 50-A and 50-B elements.

Reset Characteristic

Resets within 16 ms of when sensed current decreases below the pickup level.

Current Sensing Input

BE1-50/51B-244

Continuous Rating: 14 Aac ∗ 1 Second Rating: 400 Aac ∗ Continuous rating is 14 Aac for temperatures up to 45°C. See Figure 1-1 for derating curve.

BE1-50/51B-244 Burden

Figure 1-2

At 0.5 Aac: 2.8 Ω At 5.0 Aac: 0.3 Ω

illustrates the current sensing input burden characteristic.

Figure 1-1. Current Sensing Input Derating Curve (BE1-50/51B-244)

9252000793 Rev C BE1-50/51B-244 General Information 1-3

BE1-50/51B-230 CT Burden

100

120

140

160

0 10 20 30 40 50

Input Current (Amps)

Burden in VA (rms)

BE1-50/51B-244 CT Burden

Figure 1-2. Current Sensing Input Burden (BE1-50/51B-244)

Frequency Response

A change of ±5 Hz from the nominal 50/60 Hz current causes <0.5% change in the current required for pickup.

Transient Response

<10% overreach with system time constants up to 40 ms.

Harmonic Rejection

Rejection of odd and even harmonics is illustrated in Figure 1-3.

1-4 BE1-50/51B-244 General Information 9252000793 Rev C

Figure 1-3. Harmonic Rejection

Target Indicators

A gravity-latched, manually-reset, current-operated target indicator is provided for the time-overcurrent (51) trip output and the instantaneous overcurrent A (50-A) trip output. A target indicator is not provided for the 50-B trip output. The level of trip circuit current required to operate each target is individually controlled by a circuit board jumper. See Section 2, Controls and Indicators for jumper locations and function assignments.

Target Operate Current

not

Jumper Position—Pins 1 and 2: must operate ≥ 2.25 A; must Jumper Position—Pins 2 and 3: must operate ≥ 200 mA; must

* See Output Contacts for the maximum acceptable levels of trip circuit currents.

operate < 900 mA ∗

operate < 80 mA ∗

not

Output Contacts

Output contacts are surge protected and rated as follows.

Resistive Ratings

120/240 Vac: Make 30 amperes for 0.2 seconds, carry 7 amperes for 2 minutes, 3

amperes continuously, and break 5 amperes.

125/250 Vdc: Make 30 amperes for 0.2 seconds, carry 7 amperes for 2 minutes, 3

amperes continuously, and break 0.3 ampere.

Inductive Ratings

120/240 Vac, 125/250 Vdc: Make and carry 30 amperes for 0.2 seconds, carry 7 amperes for 2

minutes, 3 amperes continuously, and break 0.3 ampere. (L/R = 0.04).

Terminal Assignments

51 Element: 1, 10 50-A Element: 1, 10 50-B Element: 2, 10

Type Tests

Isolation: IEEE C37.90-2005 Transient Surge: IEEE C37.90.1-2004 Radiated Interference: IEEE C37.90.2-2004 Electrostatic Discharge: IEEE C37.90.3-2006 Vibration: IEC 255-21-1 Shock and Bump: IEC 255-21-2

Environment

Operating Temperature: –40 to 70°C (–40 to 158°F) Storage Temperature: –50 to 70°C (–58 to 158°F)

Agency Recognition

GOST-R Certification

GOST-R certified per the relevant standards of Gosstandart of Russia.

Physical

Weight: 8.6 lb (3.9 kg)

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1-6 BE1-50/51B-244 General Information 9252000793 Rev C

SECTION 2 • CONTROLS AND INDICATORS

TABLE OF CONTENTS

SECTION 2 • CONTROLS AND INDICATORS ........................................................................................ 2-1

Introduction ............................................................................................................................................ 2-1

Front Panel Controls and Indicators ...................................................................................................... 2-1

Circuit Board Controls ............................................................................................................................ 2-3

Figures

Figure 2-1. Front Panel Controls and Indicators ....................................................................................... 2-1

Figure 2-2. Circuit Board Controls

Tables

Table 2-1. Front Panel Controls and Indicators ......................................................................................... 2-2

Table 2-2. Circuit Board Controls

............................................................................................................. 2-3

.............................................................................................................. 2-4

9252000793 Rev C BE1-50/51B-244 Controls and Indicators i

ii BE1-50/51B-244 Controls and Indicators 9252000793 Rev C

SECTION 2 • CONTROLS AND INDICATORS

P0064-42

ACTIVE/PICKUP

PICKUP

(0.5 MIN. SET)

TIME DIAL

TENTHSUNITS

TENTHSUNITS CURVE

UNITSTENS

INSTTIME

PICKUP

INSTTIME

BE1-50/51B-244

OVERCURRENT

RELAY

Introduction

BE1-50/51B-244 relay controls and indicators are located on the front panel and circuit board.

Front Panel Controls and Indicators

Front panel controls and indicators are illustrated in Figure 2-1 and described in Table 2-1. The locators and descriptions of Table 2-1 correspond to the locators shown in Figure 2-1.

Figure 2-1. Front Panel Controls and Indicators

9252000793 Rev C BE1-50/51B-244 Controls and Indicators 2-1

Table 2-1. Front Panel Controls and Indicators

Locator

Description

Instantaneous Overcurrent Manual Trip Jacks. These jacks are used to manually trip a

These jacks do not activate the 50-B trip output contacts.

Instantaneous Overcurrent A Pickup Selector Switches. These two rotary switches select

Target Indicators. Red target indicators latch when the corresponding set of trip contacts

indicators are reset by pressing the target reset button (locator I).

Time Overcurrent Pickup Selector Switches. These two rotary switches select the time

relay is in service may cause the relay to trip.

Curve Selector Switch. This ten position rotary switch selects one of nine inverse timing

details about the timing characteristics of the BE1-50/51B-244.

these switches corresponds to a time delay of 0.0 to 9.9 seconds.

Time Overcurrent Manual Trip Jacks. These jacks are used to manually trip a breaker

terminated with two standard 0.08 inch diameter phone-tip plugs, into the two jacks.

Active/Pickup Indicator. This bicolor LED indicates the level of current sensed by the relay.

Target Reset Button. This button is pressed to reset the two, gravity-latched target indicators (locator C).

breaker controlled by the 50-A trip output contacts. This is achieved by plugging a jumper wire, terminated with two standard 0.08 inch diameter phone-tip plugs, into the two jacks.

the instantaneous overcurrent A (50-A) pickup current setting in amperes (UNITS and TENTHS). Adjusting these selector switches while the relay is in service may cause the relay to trip.

NOTE

When testing time overcurrent functions, instantaneous pickup settings of 00 will affect the calibration of the time functions. Time pickup settings of 00 also affect instantaneous functions.

closes and sufficient trip circuit current is detected. (The level of current that will trip each target indicator is jumper-selectable. See Circuit Board Controls for more information.) The Time target indicates the flow of current in the time overcurrent (51) trip circuit. The Inst target indicates the flow of current in the instantaneous overcurrent A (50-A) trip circuit. No target is provided for the instantaneous overcurrent B (50-B) trip circuit. Both target

overcurrent pickup current setting in amperes. Adjusting these selector switches while the

characteristics or one fixed time function. Refer to Appendix A, Characteristic Curves for

F Time Overcurrent Time Dial Selector Switches. These two rotary switches select the

desired curve of the timing characteristic selected by the Curve Selector Switch (locator E). When a fixed time characteristic is used (Curve Selector Switch setting of F), the setting of

controlled by the 51 trip output contacts. This is achieved by plugging a jumper wire,

The LED is red when the sensed current exceeds the time overcurrent pickup setting. The LED color changes from red to green when the sensed current decreases below 95% of the time overcurrent pickup setting. A green LED indicates that the relay is active but not picked up.

2-2 BE1-50/51B-244 Controls and Indicators 9252000793 Rev C

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