Basler Electric BE1-50/51B-122 User Manual

INSTRUCTION MANUAL

FOR

BE1-50/51B

OVERCURRENT RELAY

Part Numbers

9252000122

Publication: 9252000997
Revision: ― 08/10

9252000997

First Printing: August 2010

Printed in USA

Copyright © 2010 Basler Electric, Highland Illinois USA

INTRODUTION

This manual, publication 9252000997, covers BE1-50/51B-122 (P/N 9252000122) relays and is a special
version of the standard manual for the BE1-50/51B-219 and BE1-50/51B-226 relays. The 50/51B-122
relay is a modified version of the BE1-50/51B-219, and has five ampere current sensing and provides an
extended instantaneous element time delay.

BE1-50/51B-122 relays have the following features.

 Plugs directly into an ABB CO case with no modification of case wiring required.
 Provides up to 300 milliseconds of instantaneous element time delay.
 Replicates ABB CO and IEC time characteristic curves.

OPERATING DIFFERENCES

Operating differences between the BE1-50/51B-122 relay and the standard BE1-50/51B-219 relay center
around the function of configuration switch SW3 and the time characteristic curves available in the relays.

SW3 Settings

Operation of switch SW3 (illustrated in Figure 2-2) in the BE1-50/51B-122 differs from that in the BE1­50/51B-219 relay. SW3 operation is summarized in the following paragraphs.

SW3-1 Selects the system operating frequency.
Off selects 60 hertz operation.

On selects 50 hertz operation.

SW3-2 Selects an additional 100 milliseconds of instantaneous element time delay.
Off disables additional 100 milliseconds of time delay.

On enables additional 100 milliseconds of time delay.

SW3-3 Selects an additional 200 milliseconds of instantaneous element time delay.
Off disables additional 200 milliseconds of time delay.

On enables additional 200 milliseconds of time delay.

Placing both SW3-2 and SW3-3 in the On position provides a total instantaneous element
time delay of 300 milliseconds.

SW3-4 Selects either instantaneous or integrating reset characteristic.
Off selects instantaneous reset.

On selects integrating reset.

The integrating reset function operates only when there is sufficient sensing current to
power the relay.

Time Characteristic Curves

The ABB CO and IEC curves listed in Table 1-3 are available for selection in the BE1-50/51B-122 relay.
GE IAC curves are not available in this relay.

A-1

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INTRODUCTION

This instruction manual provides information about the operation and installation of the BE1-50/51B-219
and BE1-50/51B-226 Overcurrent Relays. 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.

9252000981 Rev H BE1-50/51B-219/-226 Introduction i

First Printing: June 1996

Printed in USA

© 2009 Basler Electric, Highland Illinois 62249 USA

All Rights Reserved

January 2009

CONFIDENTIAL

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
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.

the intention of this manual to cover all details and variations in equipment, nor does this manual

INFORMATION

BASLER ELECTRIC

ROUTE 143, BOX 269

HIGHLAND IL 62249 USA

http://www.basler.com, [e-mail]

PHONE [phone] FAX [phone]

ii BE1-50/51B-219/-226 Introduction 9252000981 Rev H

REVISION HISTORY

The following information provides a historical summary of the changes made to this instruction manual
(9252000981). Revisions are listed in reverse chronological order.

Manual

Revision and Date

H, 01/09

G, 03/08
F, 01/07

E, 09/06

D, 12/00

C, 10/00

B, 12/99

A, 05/98

 Removed notes about hard-wiring relay case to ground since relay

is a direct replacement, i.e. not shipped with a case.

 Updated Storage statement in Section 4.
 Modified Figure 5-2, Target Operational Test Setup.
 In Section 5, modified Target Test so that TIME and INST targets

can be verified independently from each other.

 Minor text edits throughout manual.
 Updated front panel drawings.
 Moved Time Characteristic Curve Figures to Appendix A.

 Moved Section 6, Maintenance information into Section 4,

Installation.

 Changed factory setting of SW3-3 to OFF. Added note about hard

wiring relay to earth ground in Section 4, Installation.

 Updated drawings in Section 2 to reflect changes to the PC board.

Updated drawings to reflect changes to the overlay. Also updated
the rest of the manual to reflect the change in switch call out from
SW8 to SW3. Added new functionality to the PICKUP LED. It is
now the ACTIVE/PICKUP LED and will be green when active and
red when picked up.

 Added BE1-50/51B-226, one ampere sensing input data throughout

the manual, and corrected switch values in Table 2-1.

 Corrected Figures 3-1, 4-2, 4-3, 5-1, and 5-2. Changed all

references to the current for testing the targets to an ac only type of
current.

 Added Patent number to Specifications. Changed manual format to

reflect the current style and added Section 7.

Change

9252000981 Rev H BE1-50/51B-219/-226 Introduction iii

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iv BE1-50/51B-219/-226 Introduction 9252000981 Rev H

CONTENTS

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  TIME CHARACTERISTIC CURVES................................................................................A-1

9252000981 Rev H BE1-50/51B-219/-226 Introduction v

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vi BE1-50/51B-219/-226 Introduction 9252000981 Rev H

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

Current Sensing Input ........................................................................................................................1-2

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

Instantaneous Overcurrent (50) Element...........................................................................................1-5

Burden................................................................................................................................................ 1-6

Frequency Response......................................................................................................................... 1-7

Transient Response........................................................................................................................... 1-7

Harmonic Response........................................................................................................................... 1-7

Target Indicators ................................................................................................................................1-8

Output Contacts .................................................................................................................................1-8

Type Tests.......................................................................................................................................... 1-8

Environment .......................................................................................................................................1-9

Agency Recognition ........................................................................................................................... 1-9

Physical..............................................................................................................................................1-9

Figures

Figure 1-1. Integrating Reset Characteristic Curve...................................................................................1-5

Figure 1-2. Instantaneous Characteristic Curves......................................................................................1-6

Figure 1-3. Burden Characteristics............................................................................................................ 1-7

Figure 1-4. Harmonic Rejection................................................................................................................. 1-8

Tables

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

Table 1-2. Time Characteristic Curve Constants with SW3-3 Open (Off)................................................. 1-3

Table 1-3. Time Characteristic Curve Constants with SW3-3 Closed (On)..............................................1-4

9252000981 Rev H BE1-50/51B-219/-226 General Information i

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ii BE1-50/51B-219/-226 General Information 9252000981 Rev H

SECTION 1  GENERAL INFORMATION

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 1-1.

Table 1-1. ABB 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 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 Hz or 60 Hz 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
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.
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.

 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 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 ABB CO or GE IAC

9252000981 Rev H BE1-50/51B-219/-226 General Information 1-1

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

Advantages

BE1-50/51B
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.

-219 and BE1-50/51B-226 overcurrent relays have many advantages over other overcurrent

SPECIFICATIONS

BE1-50/51B-219 and BE1-50/51B-226 electrical and physical specifications are listed in the following
paragraphs.

Current Sensing Input

BE1-50/51B-219

Continuous Current: 14 Aac
One Second Rating: 400 Aac

BE1-50/51B-226

Continuous Current: 2.8 Aac
One Second Rating: 80 Aac

Time Overcurrent (51) Element

Setting the T
state and may be used as a safety setting.

BE1-50/51B-219 Pickup

Setting Range: 0.5 to 15.9 Aac
Setting Increment: 0.1 Aac
Accuracy: ±2%, ±25 milliamperes at or above 0.5 ampere setting

BE1-50/51B-226 Pickup

Setting Range: 0.1 to 3.18 Aac
Setting Increment: 0.02 Aac
Accuracy: ±2%, ±5 milliamperes at or above 0.1 ampere setting

Dropout

Dropout occurs at 95% of pickup value.

Timing Range

0.0 to 9.9 seconds in 0.1 second steps.

IME PICKUP control at the minimum pickup setting places the relay in the most sensitive

Timing Accuracy

The timing accuracy is the sum of ±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. The measurement of the multiple of tap has an accuracy that
is the sum of ±2%, ±25 milliamperes for the BE1-50/51B-219 and ±2%, ±5 milliamperes for the BE1­50/51B-226.

1-2 BE1-50/51B-219/-226 General Information 9252000981 Rev H

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

PU setting: 5 amperes
Current Applied: 6.5 amperes
+ Multiple Tolerance: 6.655 amperes
– Multiple Tolerance: 6.345 amperes
Time Curve: E
Time Dial: 5.0
Minimum time dial
using 6.655 amperes: 46.5470 seconds
Maximum time dial
using 6.345 amperes: 61.3968 seconds
Curve time using 6.5 amperes: 53.1800 seconds

Curve Characteristics

Nine inverse time functions and one fixed time function can be selected by the front-panel Curve switch.
Characteristic curves for the inverse and definite time functions are defined by the following equation.

Where: T

T

T

AD

N

KBD



CM

-

A, B, C, N, K = constants for the particular curve

= time to trip in seconds

T

D = time dial setting

M = multiple of pickup setting

Time characteristic curve constants are listed in Tables 1-2 and 1-3. Constants have been selected to
conform to the characteristics of electromechanical relays over a range of pickup multiples from 1.3 to 40.
Values of the constants are provided for use in computer relay setting software. Timing accuracy is 1
cycle, 2 percent of time to trip.

Table 1-2. Time Characteristic Curve Constants with SW3-3 Open (Off)

Curve Type 

BE1 Similar To

Figure

Number †

A B C N K R

Constants

S ABB CO-2 A-1 0.2663 0.03393 1.000 1.2969 0.028 0.500
L ABB CO-5 A-2 5.6143 2.18592 1.000 1.000 0.028 15.750
D ABB CO-6 A-3 0.4797 0.21359 1.000 1.5625 0.028 0.875

M ABB CO-7 A-4 0.3022 0.12840 1.000 0.5000 0.028 1.750

I ABB CO-8 A-5 8.9341 0.17966 1.000 2.0938 0.028 9.000
V ABB CO-9 A-6 5.4678 0.10814 1.000 2.0469 0.028 5.500
E ABB CO-11 A-7 7.7624 0.02758 1.000 2.0938 0.028 7.750
B BS142-B ‡ A-8 1.4638 0.00000 1.000 1.0469 0.028 3.250

C BS142-C ‡ A-9 8.2506 0.00000 1.000 2.0469 0.028 8.000

F None § N/A 0.0000 1.00000 0.000 0.0000 0.000 1.000

9252000981 Rev H BE1-50/51B-219/-226 General Information 1-3

Table 1-3. Time Characteristic Curve Constants with SW3-3 Closed (On)

Curve Type 

BE1 Similar To

Figure

Number †

A B C N K R

Constants

S GE IAC 55 A-10 0.0286 0.0208 1.000 0.9844 0.028 0.0940
L GE IAC 66 A-11 2.3955 0.00002 1.000 0.3125 0.028 7.8001
D ABB CO-6 A-3 0.4797 0.21359 1.000 1.5625 0.028 0.8750

M ABB CO-7 A-4 0.3022 0.12840 1.000 0.5000 0.028 1.7500

I GE IAC 51 A-12 0.2747 0.1042 1.000 0.4375 0.028 0.8868
V GE IAC 53 A-13 4.4309 0.0991 1.000 1.9531 0.028 5.8231
E GE IAC 77 A-14 4.9883 0.0129 1.000 2.0469 0.028 4.7742
B BS142-B ‡ A-8 1.4636 0.00000 1.000 1.0469 0.028 3.2500

C BS142-C ‡ A-9 8.2506 0.00000 1.000 2.0469 0.028 8.0000

F None § N/A 0.0000 1.00000 0.000 0.0000 0.000 1.0000

Notes for Tables 1-2 and 1-3
 BE1 Curve Types: S: Short Inverse V: Very Inverse

L: Long Inverse E: Extremely Inverse
D: Definite Time B: BS142 Very Inverse
M: Moderately Inverse C: BS142 Extremely Inverse
I: Inverse F: Fixed Time Delay

† Figure numbers refer to the characteristic curves located in Appendix A, Time Characteristic Curves.
‡ Curves B and C are defined in British Standard BS142 and IEC Standard IEC 255-4.

§ Fixed time delay, adjustable from 0.1 to 9.9 seconds.

Integrating Reset

Reset begins when the current drops below 95% of pickup. Integrating reset simulates the disk reset of
electromechanical relays. BE1-50/51B-219 and BE1-50/51B-226 relays provide the integrating reset
function even when input current falls to zero.

Integrating reset characteristics are defined by the following equation and shown in Figure 1-1. Equation
constants are provided in Tables 1-2 or 1-3.

Integrating Reset Equation:

Where:

T

= Time to reset in seconds

RD

T



R

2

1M 

R

R = Constant for the particular curve
D = TIME DIAL setting
M = Current in multiples of PICKUP setting during reset

1-4 BE1-50/51B-219/-226 General Information 9252000981 Rev H

100.0

10.0

xRD (Seconds)

1.0

0.000 0.200 0.400 0.600 0.800 1.000 1.200

Multiple of Pickup

Vertical axis xRD (Seconds) is applicable for all curves and is derived from
multiplying the constant R for the curve selected times D (the Time Dial setting).

Figure 1-1. Integrating Reset Characteristic Curve

P0046-11

Instantaneous Overcurrent (50) Element

Setting the I

NST PICKUP at the minimum pickup setting places the relay in the most sensitive state and

may be used as a safety setting.

BE1-50/51B-219 Pickup

Setting Range: 1 to 99 Aac
Setting Increment: 1 Aac
Accuracy: ±2%, ±25 milliamperes at or above 1.0 ampere setting

BE1-50/51B-226 Pickup

Setting Range: 0.2 to 19.8 Aac
Setting Increment: 0.2 Aac
Accuracy: ±2%, ±5 milliamperes at or above 0.2 ampere setting

Dropout

Dropout occurs at 95% of pickup value.

Curve Characteristics

Instantaneous characteristic curves are similar to standard electromechanical instantaneous units.
However, the time to trip for applications where the initial current through the relay is less than 0.4
ampere (5 ampere relay) or 0.08 ampere (1 ampere relay) may be slightly longer. This may occur on a
very lightly loaded circuit or when the relay is providing ground protection and is connected to measure
neutral current. Figure 1-2 shows the instantaneous characteri stic curves for maximum time to trip.

An additional fixed delay of 0.1 second may be added with internal switch SW3-2. This delay applies to
both phase and ground applications. Closing switch SW3-2 provides an additional delay of 0.1 second.
Section 2 illustrates the location of SW3.

The instantaneous element in BE1-50/51B-219 and BE1-50/51B-226 relays may be set lower than the
instantaneous element in ABB relays and still have the same reach. This is because the BE1-50/51B-219
and BE1-50/51B-226 instantaneous element effectively eliminates the fault current transient overreach
components. When calculating BE1-50/51B-219 and BE1-50/51B-226 relay instantaneous element
settings, calculate the symmetrical value without any adder for transient overreach.

9252000981 Rev H BE1-50/51B-219/-226 General Information 1-5

Figure 1-2. Instantaneous Characteristic Curves

Burden

Burden is non-linear. Figure 1-3 illustrates the devi

ce burden.

BE1-50/51B-219

At 0.5 amperes: 4.8 
At 5.0 amperes: 0.2 

BE1-50/51B-226

At 0.1 ampere: 120 
At 1.0 ampere: 5 

1-6 BE1-50/51B-219/-226 General Information 9252000981 Rev H

Figure 1-3. Burden Characteristics

Frequency Response

A chang
pickup.

Transient Response

<10% ove

Harmonic Response

Figure 1-4 shows that a
containing 40% seventh harmonic. This corresponds to a 10:1 rejection ratio. Other conditions may be
evaluated in the same manner.

9252000981 Rev H BE1-50/51B-219/-226 General Information 1-7

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

rreach with system time constants up to 40 ms.

relay set for 1 ampere pickup would pick up at 0.96 amperes with a current

Figure 1-4. Harmonic Rejection

Target Indicators

Gravity latch

ed, manually reset targets indicate that current of 0.2 amperes or greater was present in the
trip circuit. Target coil resistance is less than 0.1 ohms and operate time is less than one millisecond. See
Output Contacts for maximum current rating.

Output Contacts

Output co

ntacts 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).

Type Tests

Isolation

Meets IEC 255-5 and exceeds IEEE C37.90-1989, one-minute dielectric (high potential) tests as follows.
All circuits to ground: 2,828 Vdc or 2,000 Vac

Input to Output Circuits: 2,828 Vdc or 2,000 Vac

Surge Withstand Capability Qualified to IEEE C37.90.1-1989 Standard Surge Withstand Capability (SWC) Tests for Protective Relays

and Relay Systems.
Impulse

Qualified to IEC 255-5.

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