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

ii 9252000981 Rev J

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

[e-mail]

Tel: [phone]

Fax: [phone]

© 2014 by Basler Electric

All rights reserved

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

Contents

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

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

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

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

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

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

iv 9252000981 Rev J

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

2 9252000981 Rev J

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

9252000981 Rev J 3

A

B

C

P0052-60

D

E

F

G

H

I

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

4 9252000981 Rev J

P0053-50

SW3

Figure 2. Location of SW3

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

9252000981 Rev J 5

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

A

INST MANUAL TRIP

Test Points

B

INST PICKUP

Selectors

C Targets

D

TIME PICKUP

Selectors

E CURVE Selector

F TIME DIAL Selectors

G

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

6 9252000981 Rev J

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

9252000981 Rev J 7

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

8 9252000981 Rev J

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

9252000981 Rev J 9

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

10 9252000981 Rev J

KBD

C

M

AD

T

N

Trip

++

−

=

( )

028

02

02758.

0

110

27624

7

09382

.

.

.

+

×+

−

×

=

028

0

05516.

0

1

10806124

524815

.

.

.

+

+

−

=

seconds 0.209=

1M

RD

T

2

Reset

−

=

seconds 15.5

10

27.75

2

−=

−

×

=

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).

A

T

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

B

T

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

C

Figure 4. Coordination Timing Diagram

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

9252000981 Rev J 11

( )( )

Rewind Full

Time RewindTrip Full

T

Occurence This Trip

=

(

)(

)

15.5

30.209

T

B

=

seconds 0.040T

B

=

( )( )

15.5

11.960.209

T

C

=

seconds 0.161T

C

=

Equation for time to trip during rewind (before relay is reset):

Second Operation:

Third Operation:

Connections

Typical ac input and dc control connections are shown in Figure 5 and Figure 6 Refer to the block
diagram in the Functional Description chapter for relay internal connections.

Figure 5. AC Input Connections

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

12 9252000981 Rev J

Figure 6. DC Control Connections

Maintenance

BE1-50/51B-219 and BE1-50/51B-226 overcurrent relays require no pr eventive maintenance. However,
periodic checks should be performed according to scheduled practices. A recommended periodic test is
provided in the Testing chapter. If the relay fails to function properly, contact the Technical Sales Support
Department of Basler Electric.

Storage

This device contains long-life aluminum electrolytic capacitors. For devices that are not in service (spares
in storage), the life of these capacitors can be maximized by energizing the device for 30 minutes once
per year.

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

9252000981 Rev J 13

Caution

To ensure proper timing during testing, before each test, remove the
chapter for R and D definitions).

Testing

Dielectric testing, operational testing, and periodic testing are described in the following paragraphs.

Dielectric Test

In accordance with IEC 255-5 and IEEE C37.90-2005, one-minute dielectric (high potential) tests may be
performed as follows:

All circuits to ground: 2,828 Vdc or 2,000 Vac
Input to output circuits: 2,828 Vdc or 2,000 Vac

Output contacts are surge protected.

Operational Test Procedure

The following procedures verify operation of relays BE1-50/51B-219 (5-ampere model) and BE1-50/51B­226 (1-ampere model). The test setup figures are intended primarily as an illustration of the principles
involved. Other test setups known to be capable of testing with the stated and implied tolerances
(including equipment specifically designed for testing relays) may be used.

Test Equipment Required

• Current source with a range from 0 to 20 Aac (sensing input current)

• AC or DC voltage source (target operation)

• Timer or counter

current from the unit for R times D seconds (refer to the Specifications

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

14 9252000981 Rev J

BE1-50/51B-219

8 9 1 2

TIME INST

10

CURRENT
SOURCE

INPUT

STOP

TIMER

START

AMPS

TEST SET

P0057-19

R

AC or DC

Voltage

Source

(V)

1 A Target Current

R = V/1
Rwatts = 1*V

Figure 7. Pickup and Timing Test Setup

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

Figure 8. Target Operational Test Setup

9252000981 Rev J 15

Note

When testing TIME overcurrent functions, INST PICKUP settings of 00
of 00 also affect INST functions.

will affect the calibration of the TIME functions. TIME PICKUP settings

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

Time Pickup Test

Perform preliminary setup:

• Connect test setup as shown in Figure 7.

• Insure that SW3 switches are set: SW3-1 for the ope rating frequency, SW3-2 to OFF, SW3-3 to

ON and SW3-4 to ON.

• Set TIME DIAL to 0.0.

• Set CURVE to S

• Set TIME PICKUP to 0.5.

• Set INST PICKUP to 90.

Step 1. Slowly increase current to terminals 8 and 9. PICKUP LED should turn RED at a maximum input

current of 0.550 ampere.
Step 2. Decrease input current until PICKUP LED turns GREEN then OFF.
Step 3. Set TIME PICKUP to 2.2.
Step 4. Slowly increase current to terminals 8 and 9. PICKUP LED should change from GREEN to RED

at an input current of 2.131 to 2.269 amperes.
Step 5. Decrease input current until PICKUP LED turns OFF.

INST Pickup Test

Perform preliminary setup:

• Connect test setup as shown in Figure 7.

• Insure that SW3 switches are set: SW3-1 for the ope rating frequency, SW3-2 to OFF, SW3-3 to

ON, and SW3-4 ON.

• Set TIME DIAL to 0.0.

• Set CURVE to S

• Set TIME PICKUP to 15.9.

• Set INST PICKUP to 01.

Step 1. Slowly increase current to terminals 8 and 9. INST contacts should close at an input current of

0.955 to 1.045 amperes.
Step 2. Decrease input current until INST output contacts open.
Step 3. Set INST PICKUP to 08.
Step 4. Slowly increase current to terminals 8 and 9. INST contacts should close at an input current of

7.815 to 8.185 amperes.
Step 5. Decrease input current until INST output contacts open.

Time Dial Test

Perform preliminary setup:

• Connect test setup as shown in Figure 7.

• Insure that SW3 switches are set: SW3-1 for the ope rating frequency, SW3-2 to OFF, SW3-3 to

ON, and SW3-4 ON.

• Set TIME DIAL to 4.5.

• Set CURVE to S

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

16 9252000981 Rev J

Warning!

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

• Set TIME PICKUP to 1.0.

• Set INST PICKUP to 90.

Step 1. Prepare to apply 1.5 amperes input current to terminals 8 and 9 and record the elapsed time from

when current is applied until TIME output contacts close.

Step 2. Apply the current (step from 0 to 1.5 amperes) and record the elapsed time. Elapsed time should

be 1.754 to 2.084 seconds. (This tolerance is greater than ±2 % because it is the accumulation of
both pickup and timing tolerances.)

Step 3. Remove input current.

Target Test

Perform preliminary setup:

• Connect test setup as shown in Figure 8.

• Insure that SW3 switches are set: SW3-1 for the ope rating frequency, SW3-2 to OFF, SW3-3 to

ON, and SW3-4 ON.

• Set TIME DIAL to 4.5.

• Set CURVE to S

• Set TIME PICKUP to 1.0.

• Set INST PICKUP to 90.

Step 1. Set voltage source to provide a target current of 1.0 ampere.
Step 2. Apply 5 amperes input current to terminals 8 and 9. Check that the TIME target operates.
Step 3. Remove input current and reset target.
Step 4. Set TIME PICKUP to 15.9 and set INST PICKUP to 01.
Step 5. Set voltage source to provide a target current of 1.0 ampere.
Step 6. Apply 5 amperes input current to terminals 8 and 9. Check that the INST target operates.
Step 7. Remove input current and reset target.

Manual Trip Test

Perform preliminary setup:

• Connect test setup as shown in Figure 8.

• Insure that SW3 switches are set: SW3-1 for the ope rating frequency, SW3-2 to OFF, SW3-3 to

ON, and SW3-4 ON.

• Set TIME DIAL to 4.5.

• Set CURVE to S

• Set TIME PICKUP to 1.0.

• Set INST PICKUP to 01.

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

Step 1. Set voltage source to provide a target current of 1.0 ampere.
Step 2. Apply 0.9 ampere input current to terminals 8 and 9. (0.9 ampere provides input power but stays

below pickup.)
Step 3. Connect a jumper between TIME MANUAL TRIP test points. Check that TIME target operates.
Step 4. Connect a jumper between INST MANUAL TRIP test points. Check that INST target operates.
Step 5. Reset targets.

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

9252000981 Rev J 17

Integrating Reset Test

Perform preliminary setup:

• Connect test setup as shown in Figure 7.

• Insure that SW3 switches are set: SW3-1 for the ope rating frequency, SW3-2 to OFF, SW3-3 to

ON, and SW3-4 ON.

• Set TIME DIAL to 9.9.

• Set CURVE to V.

• Set TIME PICKUP to 1.0.

• Set INST PICKUP to 90.

Step 1. Set voltage source to provide a target current of 1.0 ampere.
Step 2. Read all of Step 3 before beginning Step 3.
Step 3. Apply 4.0 amperes input current to terminals 8 and 9. After the unit trips, remove the input current

for 29 ±0.25 seconds, then reapply the 4.0 amperes input current. Recor d the el a ps ed time from

the re-application of input current to the output retrip.
Result: Elapsed time should be 2.08 ±0.4 seconds.

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

Time Pickup Test

Perform preliminary setup:

• Connect test setup as shown in Figure 7.

• Insure that SW3 switches are set: SW3-1 for the ope rating frequency, SW3-2 to OFF, SW3-3 to

ON and SW3-4 to ON.

• Set TIME DIAL to 0.0.

• Set CURVE to S

• Set TIME PICKUP to 0.5.

• Set INST PICKUP to 18.0.

Step 1. Slowly increase current to terminals 8 and 9. PICKUP LED should turn RED at a maximum input

current of 0.110 ampere.
Step 2. Decrease input current until PICKUP LED turns GREEN then OFF.
Step 3. Set TIME PICKUP to 0.44.
Step 4. Slowly increase current to terminals 8 and 9. PICKUP LED should change from GREEN to RED

at an input current of 0.426 to 0.454 amperes.
Step 5. Decrease input current until PICKUP LED turns OFF.

INST Pickup Test

Perform preliminary setup:

• Connect test setup as shown in Figure 7.

• Insure that SW3 switches are set: SW3-1 for the ope rating frequency, SW3-2 to OFF, SW3-3 to

ON, and SW3-4 ON.

• Set TIME DIAL to 0.0.

• Set CURVE to S

• Set TIME PICKUP to 3.18.

• Set INST PICKUP to 0.2

Step 1. Slowly increase current to terminals 8 and 9. INST contacts should close at an input current of

0.191 to 0.209 amperes.

Step 2. Decrease input current until INST output contacts open.

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

18 9252000981 Rev J

Step 3. Set INST PICKUP to 08.
Step 4. Slowly increase current to terminals 8 and 9. INST contacts should close at an input current of

1.563 to 1.637 amperes.

Step 5. Decrease input current until INST output contacts open.

Time Dial Test

Perform preliminary setup:

• Connect test setup as shown in Figure 7.

• Insure that SW3 switches are set: SW3-1 for the ope rating frequency, SW3-2 to OFF, SW3-3 to

ON, and SW3-4 ON.

• Set TIME DIAL to 4.5.

• Set CURVE to S

• Set TIME PICKUP to 0.2.

• Set INST PICKUP to 18.0.

Step 1. Prepare to apply 0.3 amperes input current to terminals 8 and 9 and record the elapsed time from

when current is applied until TIME output contacts close.
Step 2. Apply the current (step from 0 to 0.3 amperes) and record the elapsed time. Elapsed time should

be 0.345 to 0.424 seconds. (This tolerance is greater than ±2 % because it is the accumulation

of both pickup and timing tolerances.)
Step 3. Remove input current.

Target Test

Perform preliminary setup:

• Connect test setup as shown in Figure 8.

• Insure that SW3 switches are set: SW3-1 for the ope rating frequency, SW3-2 to OFF, SW3-3 to

ON, and SW3-4 ON.

• Set TIME DIAL to 4.5.

• Set CURVE to S

• Set TIME PICKUP to 0.2.

• Set INST PICKUP to 19.8.

Step 1. Set voltage source to provide a target current of 1.0 ampere.
Step 2. Apply 1 ampere input current to terminals 8 and 9. Check that the TIME target operates.
Step 3. Remove input current and reset target.
Step 4. Set TIME PICKUP to 3.18 and set INST PICKUP to 0.2.
Step 5. Set voltage source to provide a target current of 1.0 ampere.
Step 6. Apply 1 ampere input current to terminals 8 and 9. Check that the INST target operates.
Step 7. Remove input current and reset target.

Manual Trip Test

Perform preliminary setup:

• Connect test setup as shown in Figure 8.

• Insure that SW3 switches are set: SW3-1 for the ope rating frequency, SW3-2 to OFF, SW3-3 to

ON, and SW3-4 ON.

• Set TIME DIAL to 4.5.

• Set CURVE to S

• Set TIME PICKUP to 0.2.

• Set INST PICKUP to 0.2.

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

9252000981 Rev J 19

Warning!

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

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

Step 1. Set voltage source to provide a target current of 1.0 ampere.
Step 2. Apply 0.15 ampere input current to terminals 8 and 9. (0.15 ampere provides input power but

stays below pickup.)
Step 3. Connect a jumper between TIME MANUAL TRIP test points. Check that TIME target operates.
Step 4. Connect a jumper between INST MANUAL TRIP test points. Check that INST target operates.
Step 5. Reset targets.

Integrating Reset Test

Perform preliminary setup:

• Connect test setup as shown in Figure 7.

• Insure that SW3 switches are set: SW3-1 for the ope rating frequency, SW3-2 to OFF, SW3-3 to

ON, and SW3-4 ON.

• Set TIME DIAL to 4.5.

• Set CURVE to I.

• Set TIME PICKUP to 0.20.

• Set INST PICKUP to 18.0.

Step 1. Set voltage source to provide a target current of 1.0 ampere.
Step 2. Read all of Step 3 before beginning Step 3.
Step 3. Apply 0.8 amperes input current to terminals 8 and 9. After the unit trips, remove the input current

for 20 ±0.25 seconds, then reapply the 0.8 amperes input current. Record the elapsed time from

the re-application of input current to the output retrip.
Result: Elapsed time should be 1.55 ±0.3 seconds.

Setting the Relay

Select the desired relay settings before putting the relay into service. Changing pickup current settings
while the relay is in service may cause tripping.

Periodic Tests

General

All relays should be tested periodically to identify and correct any problems that are found.
Single phase relays such as the BE1-50/51B-219 and BE1-50/51B-226 are normally used in groups of

four (three phase and ground) on the protected circuit. This relay scheme allows each unit to be
withdrawn one at a time for testing purposes without losing protection. Only three are required at any one
time to sense all types of faults on a grounded wye system. Refer to Figure 7 and Figure 8 for
recommended test setups.

Periodic Test

Periodic testing should consist of the following pr oc ed ures .
Step 1. Verify that the instantaneous pickup is within ±2% of the value set on the dials. Pickup occurs

when the INST output contacts close.

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

20 9252000981 Rev J

Step 2. Verify that the time pickup is within ±2% of the value set on the dials. Pickup occurs when the

LED turns GREEN then RED.
Step 3. Verify that the time to trip for the curve and time dial settings at a multiple of six is the same as

the time given on the characteristic curve. Refer to the Specifications chapter for the

characteristics curves.
Step 4. Verify that the time to trip for the instantaneous element at a pickup multiple of 2 is not greater

than the time given on the instantaneous characteristic curve. Refer to the Specifications chapter

for the instantaneous characteristic curve.
Step 5. Verify that the targets operate with one ac ampere of trip current in the trip circuits and that they

can be reset using the RESET BUTTON.

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

9252000981 Rev J 21

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 TIME PICKUP control 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: 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.

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.

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

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

22 9252000981 Rev J

KBD

CM

AD

T

N

T

++=

-

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

= time to trip in seconds

T

D = time dial setting
M = multiple of pickup setting

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

Time characteristic curve constants are listed in Table 3 and Table 4. 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 3. Time Characteristic Curve Constants with SW3-3 Open (Off)

Curve Type ∗

BE1 Similar To A B C N K R

Figure

Number †

Constants

S ABB CO-2 13 0.2663 0.03393 1.000 1.2969 0.028 0.500

L ABB CO-5 14 5.6143 2.18592 1.000 1.000 0.028 15.750

D ABB CO-6 15 0.4797 0.21359 1.000 1.5625 0.028 0.875

M ABB CO-7 16 0.3022 0.12840 1.000 0.5000 0.028 1.750

I ABB CO-8 17 8.9341 0.17966 1.000 2.0938 0.028 9.000
V ABB CO-9 18 5.4678 0.10814 1.000 2.0469 0.028 5.500
E ABB CO-11 19 7.7624 0.02758 1.000 2.0938 0.028 7.750
B BS142-B ‡ 20 1.4638 0.00000 1.000 1.0469 0.028 3.250

C BS142-C ‡ 21 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

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

9252000981 Rev J 23

Curve Type ∗

Number †

BE1

Similar To

A B C N K

R

1M

RD

T

2

R

−

=

Where:

M = Current in multiples of PICKUP setting during reset

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

Figure

Constants

S GE IAC 55 10 0.0286 0.0208 1.000 0.9844 0.028 0.0940

L GE IAC 66 11 2.3955 0.00002 1.000 0.3125 0.028 7.8001
D ABB CO-6 15 0.4797 0.21359 1.000 1.5625 0.028 0.8750
M ABB CO-7 16 0.3022 0.12840 1.000 0.5000 0.028 1.7500

I GE IAC 51 24 0.2747 0.1042 1.000 0.4375 0.028 0.8868
V GE IAC 53 25 4.4309 0.0991 1.000 1.9531 0.028 5.8231
E GE IAC 77 26 4.9883 0.0129 1.000 2.0469 0.028 4.7742
B BS142-B ‡ 20 1.4636 0.00000 1.000 1.0469 0.028 3.2500

C BS142-C ‡ 21 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 Table 3 and Table 4
∗ BE1 Curve Types: S: Short Inverse V: Very Inverse

L: Long Inverse E: Ex tr emely Inverse
D: Definite Time B: BS142 Very Inver se
M: Moderately Inverse C: BS142 Extremely Inverse
I: Inverse F: Fixed Time Delay

† Figure numbers refer to the characteristic curves located in the Time Characteristic Curves chapter.
‡ 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 9. Equation
constants are provided in Table 3 or Table 4.

Integrating Reset Equation:

TR = Time to reset in seconds
R = Constant for the particular curve
D = TIME DIAL setting

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

24 9252000981 Rev J

1.0

10.0

100.0

0.000 0.200 0.400 0.600 0.800 1.000 1.200

Multiple of Pickup

xRD (Seconds)

P0046-11

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

Figure 9. Integrating Reset Characteristic Curve

Instantaneous Overcurrent (50) Element

Setting the INST 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 amper e sett ing

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 10 shows the instantaneous characteristic curves for maximum time to trip.

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

9252000981 Rev J 25

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.
The Controls and Indicator s chapter 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.

Figure 10. Instantaneous Characteristic Curves

Burden

Burden is nonlinear. Figure 11 illustrates the device burden.

BE1-50/51B-219

At 0.5 amperes: 4.8 Ω
At 5.0 amperes: 0.2 Ω

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

26 9252000981 Rev J

BE1-50/51B-226

At 0.1 ampere: 120 Ω
At 1.0 ampere: 5 Ω

Figure 11. Burden Characteristics

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.

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

9252000981 Rev J 27

Harmonic Response

Figure 12 shows that a relay set for 1 ampere pickup would pick up at 0.96 amperes with a current
containing 40% seventh harmonic. This corresponds to a 10:1 rejection ratio. Other conditions may be
evaluated in the same manner.

Figure 12. Harmonic Rejection

Target Indicators

Gravity latched, 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 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).

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

28 9252000981 Rev J

Type Tests

Isolation

Meets IEC 255-5 and exceeds IEEE C37.90-2005, 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 C37.90.1-2002 Standard Surge Withstand Capability (SWC) Tests for Protective Relays
and Relay Systems.

Impulse

Qualified to IEC 255-5.

Radio Frequency Interference (RFI)

Qualified to IEEE C37.90.2-2004.
Field-tested using a 5-watt, hand-held transceiver operating at random frequencies centered around 144

MHz and 440 MHz, with the antenna located 6 inches from the relay in both horizontal and vertical
planes.

Vibration

Withstands 2 G in each of three mutually perpendicular planes swept over the range of 10 to 500 Hz for a
total of 6 sweeps, 15 minutes each sweep.

Shock

Withstands 15 G in each of three mutually perpendicular planes.

Environment

Operating Temperature: –40°C to 70°C (–40°F to158°F)
Storage Temperature: –50°C to 70°C (–58°F to 158°F).

Agency Recognition

GOST-R Certification

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

Physical

Weight: 6.1 lb (2.77 kg)

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

9252000981 Rev J 29

Time Characteristic Curves

The following figures illustrate the time characteristic curves that are programmed into the nonvolatile
memory of this relay.

Figure 13. Time Characteristic Curve, S-Short Inverse

(SW3-3 OFF, Similar to ABB CO-2)

BE1-50/51B-219/-226 Time Characteristic Curves

30 9252000981 Rev J

Figure 14. Time Characteristic Curve, L-Long Inverse

(SW3-3 OFF, Similar to ABB CO-5)

Time Characteristic Curves BE1-50/51B-219/-226

9252000981 Rev J 31

Figure 15. Time Characteristic Curve, D-Definite Time

(Similar to ABB CO-6)

BE1-50/51B-219/-226 Time Characteristic Curves

32 9252000981 Rev J

Figure 16. Time Characteristic Curve, M-Moderately Inverse

(Similar to ABB CO-7)

Time Characteristic Curves BE1-50/51B-219/-226

9252000981 Rev J 33

Figure 17. Time Characteristic Curve, I-Inverse

(SW3-3 OFF, Similar to ABB CO-8)

BE1-50/51B-219/-226 Time Characteristic Curves

34 9252000981 Rev J

Figure 18. Time Characteristic Curve, V-Very Inverse

(SW3-3 OFF, Similar to ABB CO-9)

Time Characteristic Curves BE1-50/51B-219/-226

9252000981 Rev J 35

Figure 19. Time Characteristic Curve, E-Extremely Inverse

(SW3-3 OFF, Similar to ABB CO-11)

BE1-50/51B-219/-226 Time Characteristic Curves

36 9252000981 Rev J

Figure 20. Time Characteristic Curve, BS142-B

(BS142 Very Inverse)

Time Characteristic Curves BE1-50/51B-219/-226

9252000981 Rev J 37

Figure 21. Time Characteristic Curve, BS142-C

(BS142 Extremely Inverse)

BE1-50/51B-219/-226 Time Characteristic Curves

38 9252000981 Rev J

Figure 22. Time Characteristic Curve, S2-Short Inverse

(SW3-3 ON, Similar to GE IAC 55)

Time Characteristic Curves BE1-50/51B-219/-226

9252000981 Rev J 39

Figure 23. Time Characteristic Curve, L2-Long Inverse

(SW3-3 ON, Similar to GE IAC 66)

BE1-50/51B-219/-226 Time Characteristic Curves

40 9252000981 Rev J

Figure 24. Time Characteristic Curve, I2-Inverse

(SW3-3 ON, Similar to GE IAC 51)

Time Characteristic Curves BE1-50/51B-219/-226

9252000981 Rev J 41

Figure 25. Time Characteristic Curve, V2-Very Inverse

(SW3-3 ON, Similar to GE IAC 53)

BE1-50/51B-219/-226 Time Characteristic Curves

42 9252000981 Rev J

Figure 26. Time Characteristic Curve, E2-Extremely Inverse

(SW3-3 ON, Similar to GE IAC 77)

Time Characteristic Curves BE1-50/51B-219/-226

9252000981 Rev J 43

Manual

A, May-98

• Added Patent number to Specifications. Changed manual format

B, Dec-99

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

C, Oct-00

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

D, Dec-00

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

E, Sep-06

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

wiring relay to earth ground in Section 4, Installation

F, Jan-07

• Moved Time Characteristic Curve Figures to Appendix A

Installation

G, Mar-08

• Updated front panel drawings

H, Jan-09

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

J, Oct-14

• Updated the year of IEEE standards used for type tests

Revision History

Table 5 provides a historical summary of the changes made to this instruction manual. Revisions are
listed in chronological order.

Table 5. Instruction Manual Revision History

Revision and Date

Change

to reflect the current style and added Section 7

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

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

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 th e PICKU P LED. It is
now the ACTIVE/PICKUP LED and will be green when active and
red when picked up

• Moved Section 6, Maintenanc e information into Section 4,

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 independe n tly from each other

• Minor text edits throughout manual

• Improved description of Locator H (Active/Pickup LED) in Table 2

• Minor text edits throughout manual

BE1-50/51B-219/-226 Revision History

44 9252000981 Rev J

Revision History BE1-50/51B-219/-226

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