Basler Electric BE1-32R User Manual

INSTRUCTION MANUAL

FOR

DIRECTIONAL POWER RELAYS

BE1-32R AND BE1-32O/U

Publication: 9171100990
Revision: T 01/13

INTRODUCTION

This instruction manual provides information about the operation and installation of the BE1-32R and
BE1-32O/U Directional Power Relays. To accomplish this, the following information is provided:

 General Information and Specifications

 Controls and Indicators

 Functional Description

 Installation

 Tests and Adjustments

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.

9171100990 Rev T BE1-32R, BE1-32O/U Introduction i

First Printing: September 1986

Printed in USA

© 2013 Basler Electric, Highland Illinois 62249 USA

All Rights Reserved

January 2013

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, [e-mail]

PHONE [phone] FAX [phone]

ii BE1-32R, BE1-32O/U Introduction 9171100990 Rev T

REVISION HISTORY

The following information provides a historical summary of the changes made to the BE1-32R and BE1­32O/U instruction manual (9171100990). Revisions are listed in reverse chronological order.

Manual

Revision and Date

T, 01/13

S, 05/10

R, 09/07

P, 11/06

N, 08/05

M, 10/03

L, 08/02

K, 08/01

J, 09/00

 Updated case and cover drawings in Section 4.

 Replaced Figure 4-4, Panel Drilling/Cutout for M1 Case.
 Added Notes for Figure 4-16, Control Circuit Diagram.
 Added Storage statement in Section 4.

 Added manual part number and revision to all footers.
 Updated Power Supply Burden data in Section 1.
 Updated Target Indicator description in Section 3.
 Moved content of Section 6, Maintenance to Section 4 and deleted

Section 6.

 Updated Table 1-1 Steam Turbine Percent of Rated kW.
 Added GOST-R to Specifications in Section 1.

 In Section 1 and 3, where applicable, added recommendation against

using relay with power factors below 0.10.

 Corrected the shorting bar illustration across terminals 8 and 9 in

Figures 4-17, 4-18, 4-19, and 4-20.

 Replaced cover illustrations and Figure 2-1 with drawing showing

revised front panel layout.

 Modified style chart (Figure 1-11) to clarify sensing input range

selection.

 Modified the function block diagram of Figure 3-1.
 Added information to Section 3 about sensing input range 1, 4, and 7

current ratings and burden.

 Deleted Tables 3-1, 3-2, and 3-3. (These tables are duplicates of the

tables already provided in Section 1.) Modified the text references
accordingly.

 Reorganized the Section 4 mounting drawings according to type:

drilling, outline-rear view, outline-side view, and outline-cover.

 Deleted Section 4 dielectric test information (already provided in

Section 1).

 Moved manual revision information from Section 7 to introduction

section of the manual.

 Revised Figure 1-14 to illustrate the new 32R inverse time curves.
 Corrected various minor errors throughout the manual.

 Improved Pickup description in Section 3.
 Revised Figures 4-2 and 4-12 to show slotted knob on the front panel.
 Revised Figure 4-4.

 Updated the outline drawings in Section 4 to show new case cover

design.

 Removed the selectable power supply option from the style chart.

Change

9171100990 Rev T BE1-32R, BE1-32O/U Introduction iii

Manual

Revision and Date

H, 06/98

G, 07/95

F, 06/94

E, 02/94

Change

 Deleted references to Service Manual 9171100620.
 Changed power supply voltage and burden data listed in Section 1.
 Added information to instantaneous response time specification in

Section 1.

 Added Figure 1-13 and associated paragraphs describing the

underpower element.

 Corrected the power supply entries in the style chart.
 Add information to the pickup accuracy specification in Section 1.
 Added information to the Power Supply paragraph in Section 3.
 Added outline drawings to cover all available case options.
 Changed the case ground symbol shown in the Internal Connection

diagrams.

 Revised the manual format.

 Revised the pickup accuracy stated in Specifications of Section 1.
 Corrected isolation specification in Section 1 and dielectric test values

in Section 4.

 Added Note 3 to Figure 4-20.
 Corrected CT sensing connections in Figure 4-21.
 Moved polarity indications in Figure 4-25.
 Deleted 30 label in Figure 5-5 and corrected equation.

 Added 120 Vac label to Figure 1-11.
 Changed reference for Figure 1-12 from Specifications, Timing

Accuracies to Timing Adjustment Range.

 Added Figure 1-13.
 Corrected input sensing terminal numbers in Figure 4-23.
 Deleted reference to Figure 3-8 (Figure 3-8 was replaced by Figure 1-

13.)

 Added internal connection and typical connection diagrams to Section

4.

 Added Phase Rotation Sensitivity to Section 1.
 Revised the format of the manual.

iv BE1-32R, BE1-32O/U Introduction 9171100990 Rev T

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

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vi BE1-32R, BE1-32O/U Introduction 9171100990 Rev T

SECTION 1 • GENERAL INFORMATION

TABLE OF CONTENTS

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

INTRODUCTION.................................................................................................................................... 1-1

APPLICATION ....................................................................................................................................... 1-1

Example 1: Anti-Motoring ................................................................................................................... 1-1

Example 2: Co-Generator Control ...................................................................................................... 1-2

Example 3: Generator Overload ........................................................................................................ 1-3

Example 4: Intertie ............................................................................................................................. 1-3

Example 5: Delayed Electrical Trip .................................................................................................... 1-4

Example 6: Breaker Opening Detection ............................................................................................. 1-4

Example 7: Reactive Power (Vars) Detection .................................................................................... 1-6

MODEL AND STYLE NUMBER ............................................................................................................. 1-7

Style Number Example ....................................................................................................................... 1-8

SPECIFICATIONS ................................................................................................................................. 1-9

Current Sensing ................................................................................................................................. 1-9

Voltage Sensing ................................................................................................................................. 1-9

Targets ............................................................................................................................................... 1-9

Output Circuits .................................................................................................................................. 1-10

Power Supply ................................................................................................................................... 1-10

Pickup ............................................................................................................................................... 1-10

Timing ............................................................................................................................................... 1-10

Timing—continued ........................................................................................................................... 1-13

Power Range (Pickup) ..................................................................................................................... 1-13

Type Tests ........................................................................................................................................ 1-13

UL Recognition ................................................................................................................................. 1-14

GOST-R ............................................................................................................................................ 1-14

Temperature ..................................................................................................................................... 1-14

Weight .............................................................................................................................................. 1-14

Figures

Figure 1-1. Single-Phase ........................................................................................................................... 1-1

Figure 1-2. Power Relay Start Control....................................................................................................... 1-2

Figure 1-3. Power Relay Start/Stop Control .............................................................................................. 1-3

Figure 1-4. Power Relay Distribution Protection ....................................................................................... 1-3

Figure 1-5. Single-Phase, Non-Electrical Trip Supervision ....................................................................... 1-4

Figure 1-6. Breaker Opening Detection ..................................................................................................... 1-4

Figure 1-7. Power Factor, First and Second Quadrants............................................................................ 1-5

Figure 1-8. Power Factor, Third and Fourth Quadrants ............................................................................ 1-5

Figure 1-9. Underpower Tripping ............................................................................................................... 1-5

Figure 1-11. Modified Type A Sensing ...................................................................................................... 1-7

Figure 1-12. Style Number Identification Chart ......................................................................................... 1-8

Figure 1-13. Overpower Instantaneous Response Time......................................................................... 1-11

Figure 1-14. Underpower Instantaneous Response Time....................................................................... 1-11

Figure 1-15. Overpower Inverse Time Characteristic Curves ................................................................. 1-12

Tables

Table 1-1. Motoring Reverse Power Requirements .................................................................................. 1-2

Table 1-2. Current Sensing Burden in Ohms ............................................................................................ 1-9

Table 1-3. Power Supply Specifications .................................................................................................. 1-10

Table 1-4. Power Pickup Ranges ............................................................................................................ 1-13

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ii BE1-32R, BE1-32O/U General Information 9171100990 Rev T

SECTION 1 • GENERAL INFORMATION

INTRODUCTION

BE1-32R, Directional Overpower and BE1-32O/U, Directional Over/Underpower Relays sense real power
(IE times the cosine of θ). These solid-state relays are designed for use in single- or three-phase systems
to protect equipment against overpower and/or underpower conditions. They may also be used in the
supervisory control of circuits.

APPLICATION

Directional Power Relays are typically used in applications where excessive power flow in the tripping
direction is bad. Over and/or underpower protection is desirable where:

• Power flows into a generator, indicating loss of prime mover torque (motoring).

• Power flows into the secondary of a station distribution transformer, indicating an industrial or private

customer is supplying power into the utility system.

• Excessive load has been connected to a system.

• Overload has been placed on a distribution system.

• Overspeeding is a prime concern.

• An open breaker creates an overload on a local generation facility.

• Loss of excitation can be determined by var sensing.

NOTE

This product is not recommended for power factors below 0.10. Contact Basler
Electric for recommended products.

Example 1: Anti-Motoring

When a synchronous generator, operating in parallel
with a power system, loses prime mover torque, it
remains in synchronism with the system and continues
to run as a synchronous motor. Motoring draws power
from the system to drive the prime mover and can cause
severe damage to the prime mover. Steam turbines
require a constant flow of steam to remove the heat
caused by turbulence or cavitations on or about the
blades. Without this flow of steam, heat builds up and
may cause softening or distortion of the turbine blades.
Diesel engines and gas turbines are less susceptible to
immediate damage, but unburned fuel may present a fire
or explosion hazard.

BE1-32 Directional Power Relays can detect power flow
into the generator and disconnect the generator before
the prime mover sustains inevitable damage. Unlike the
conditions arising from faults, the electrical conditions
involved in anti-motoring protection are balanced.
Therefore, single-phase relay protection is adequate.
Figure 1-1 shows connections for single-phase relay
(type B or V sensing). This connection measures real
power if the system voltages are balanced.

The BE1-32R, Reverse Power Relay must be sensitive
enough to detect power levels lower than those required
to motor the generator. Sensitivity is much more
important on steam and hydro turbines than on
reciprocating engines and gas turbines.

Figure 1-1. Single-Phase

Motoring Protection

9171100990 Rev T BE1-32R, BE1-32O/U General Information 1-1

Table 1-1 represents the reverse power requirements to motor a generator when the prime mover is

Prime Mover Type

Percent of Rated kW

rotating at synchronous speed with no input power supplied by the prime mover.

Table 1-1. Motoring Reverse Power Requirements

Hydro Turbine 0.2 to 2.0

Steam Turbine (condensing or non-condensing) 0.5 to 3.0

Diesel Engine (no cylinders firing) Up to 25

Gas Turbine Up to 50 (due to compressor load)

The Reverse Power Relay is generally set for levels as low as possible with steam turbines typically being
set not higher than three percent and diesels and gas turbines slightly below ten percent.

Time delays are usually employed to avoid nuisance tripping caused by reverse power transient surges
that may result from synchronizing or other system disturbances. These time delays are typically set from
2 to 10 seconds, but may be set as high as 30 seconds or more.

An operating condition with very low power levels at a low power factor may not be detected by this
product. For very low power levels at power factors of 0.10 or lower, contact Basler Electric for
recommended products.

Example 2: Co-Generator Control

In this example, cogeneration concepts are addressed.
To illustrate, assume that the cogeneration system has
automatic engine controls, an auto-synchronizer,
automatic kW, and kvar controls. The system operates
virtually by itself. The only function lacking is the
start/stop signals to the generators. Two system
configurations may be implemented to generate contact
closures for start/stop signals.

The first configuration (Figure 1-2) shows a directional
power relay connected to the utility to sense kW. The
pickup point of the relay is set at the maximum desired
utility power level. When the utility power level exceeds
the relay pickup point, the output relay contact closes
and the generator is automatically started and paralleled
with the utility. A time delay is generally included in the
start circuit of about 15 or more seconds to ignore
transient overload conditions.

When the generator is paralleled and loaded, the kW
signal of the utility decreases by the amount of load the
generator has accepted. An underpower relay can
measure utility power and generate a stop signal when
the utility power decreases below a selected level. A
time delay is typically provided for the stop signal of one
minute or more (however, time delays are totally user
controlled). The Basler Electric Model BE1-32O/U Power
Relay incorporates both overpower and underpower
sensing in a single relay unit and is ideal for this type of
application.

Figure 1-2. Power Relay Start Control

1-2 BE1-32R, BE1-32O/U General Information 9171100990 Rev T

In the second configuration, the start signal is generated in the same manner as that of Figure 1-2. The
start signal setpoint may be set above the import power setting. The stop signal will require an
underpower relay on the generator output. This system is illustrated in Figure 1-3.

Example 3: Generator Overload

When excessive load has been connected to a generating system, the directional power relay can initiate
corrective action. Corrective action could be energizing an alarm to alert the station operator. For
automated systems, corrective action could be initiating the sequence to either shed non-critical load or to
start and parallel an in-house generator to assume the excess load.

Figure 1-3. Power Relay Start/Stop Control

Example 4: Intertie

Another typical use of the directional power relay, addresses excessive load and concerns distribution
protection (Figure 1-4). A high voltage bus supplies two transformers: T1 and T2. Both T1 and T2 can
supply all connected load. However, neither T1 nor T2 alone can supply the total load. A BE1-32O/U,
over/underpower directional relay can protect this distribution system by providing overload protection for
each transformer (overpower function) or by sensing power flow through the transformers (reverse power
function) in an undesired direction.

Figure 1-4. Power Relay Distribution Protection

9171100990 Rev R BE1-32R, BE1-32O/U General Information 1-3

Example 5: Delayed Electrical Trip

On large steam units, where overspeeding is a prime concern, a reverse power relay can be used to
supervise electrical tripping (field and main ac breakers) for selected relay operations (e.g., non-electrical
trips, loss of field relay), as shown in Figure 1-5. The reverse power relay delays breaker tripping until
trapped steam has been removed from the piping. In this case, a separate direct-tripping anti-motoring
relay can be used to protect for situations not related to an automatic shutdown of the unit.

Figure 1-5. Single-Phase, Non-Electrical Trip Supervision

Example 6: Breaker Opening Detection

Figure 1-6 shows a reverse power relay used to detect the opening of a source at an industrial (or other
independent generation) location. A location with no generation but multiple ties from a common source is
a good candidate for this relay application. With local generation, the relay is applicable if the local
generation is not to deliver real power to the utility.

Figure 1-6. Breaker Opening Detection

Under near-floating conditions (minimal flow of real power from the utility), the relay can encounter a wide
range of power factor angles in the first and second quadrants (see Figure 1-7). If the local generation is
underexcited, reactive power is supplied by the utility and operation is in the first quadrant. Figure 1-7
shows the range of power factor angles (also in the first two quadrants) under heavy line loading.
Because of these power factors, the relay must not operate for any angle in the first and second
quadrants.

1-4 BE1-32R, BE1-32O/U General Information 9171100990 Rev T

Figure 1-7. Power Factor, First and Second Quadrants

When breaker N opens, operation transfers to the third or fourth quadrants (see Figure 1-8). If transformer
exciting current predominates, operation falls in the third quadrant. If cable charging current pre­dominates, operation falls in the fourth quadrant. In either case, the transformer losses must be supplied.
In Figure 1-8, a real current component of four milliamperes is shown and represents core losses of the
transformer (about 0.1% of rated).

Figure 1-8. Power Factor, Third and Fourth Quadrants

When breaker N opens, real power reverses from normal and flows toward the utility. This power may be
flowing to the tapped load. At this time, the relay operates and causes the 52 breaker to open.

Figure 1-9A shows an underpower tripping application based on the BE1-32O/U, model A1F with an
overpower setting of 0.5 watts and an underpower setting of 50%. The control circuit for this application is
shown in Figure 1-9B. Figure 1-10 shows the operating characteristic in the first and second quadrant.
The relay Under contact closes to trip the breaker when the real power flow from the utility drops below

0.25 watts. Because this contact is pre-closed at the instant of breaker closing, the trip circuit must be
disabled by a timing relay (62) until after the breaker has closed.

Figure 1-9. Underpower Tripping

9171100990 Rev R BE1-32R, BE1-32O/U General Information 1-5

Example 7: Reactive Power (Vars) Detection

Figure 1-10. True

This example illustrates a directional power relay configured to distinguish between real and reactive
power. Real power (watts) is supplied to the synchronous generator by the prime mover, and reactive
power (vars) is supplied to the field by the exciter. When field excitation is significantly reduced and the
connected system can provide sufficient reactive power to maintain the generator terminal voltage,
reactive power flows into the machine and causes it to operate as an induction generator with essentially
the same kW output. This situation causes two major problems. First, the additional reactive loading of
the faulty generator must be redistributed to other synchronous generators on the system. Secondly, a
synchronous generator is not designed to operate as an induction generator. Excessive heating results in
the damper (amortisseur) windings, slot wedges, and in the surface iron of the rotor due to the slip
frequency current flow when a synchronous generator is operated as an induction generator.

BE1-32R and BE1-32O/U Directional Power Relays are designed to respond to true power (P) as defined
by the following equation and illustrated in Figure 1-10.

P = EI (cos θ)

where: P = real power (watts)
I = effective current
E = effective EMF or system voltage
θ = the power factor angle

However, reactive power (Q) is defined by the equation:

Q = EI (sin θ)

Using the trigonometric identity sine θ = cos(θ – 90 )

then: Q = EI (cos(θ – 90 ))

If the phase of the sensed voltage is shifted +90°, the true power relay can be used to monitor reactive
power. In practice, this can be accomplished by applying the appropriate line-to-line voltage to a true
power measuring relay designed for line-to-neutral sensing. Figure 1-11 illustrates how a single-phase
BE1-32R or BE1-32O/U can be connected to measure either real power (watts) or reactive power (vars)
flow in a three-phase system. Note the difference of phase relationship between the alternate connections
in Figure 1-11.

1-6 BE1-32R, BE1-32O/U General Information 9171100990 Rev T

Figure 1-11. Modified Type A Sensing

MODEL AND STYLE NUMBER

BE1-32R and -32 O/U Directional Power Relays electrical characteristics and operational features are
defined by a combination of letters and numbers that make up the style number. Model numbers BE1­32R or BE1-32O/U designate the relay as a Basler Electric, Class 100, Directional Power Relay. The
model number and style number describe the options included in a specific device, and appear on the
front panel, draw-out cradle, and inside the case assembly. Upon receipt of a relay, be sure to check the
style number against the requisition and the packing list to ensure that they agree.

The style number chart is shown in Figure 1-12.

9171100990 Rev R BE1-32R, BE1-32O/U General Information 1-7

Figure 1-12. Style Number Identification Chart

Style Number Example

If a BE1-32R Directional Overpower Relay is ordered with a style number of A1GA1PA0N1F, the relay
would have the following features.

A ------- Single-phase current sensing and line-to-neutral voltage sensing

1 -------- 120 Vac, 0.5 to 20 W sensing input range

G ------- One output relay with normally closed (N.C.) contacts

A1 ------ Instantaneous timing characteristics with one setpoint

P ------- 125 Vdc/120 Vac power supply

A ------- One internally operated target

0 -------- No option 1

N ------- No power supply status output

1 -------- One normally-open, auxiliary output relay

F -------- Semi-flush mounting case

1-8 BE1-32R, BE1-32O/U General Information 9171100990 Rev T

SPECIFICATIONS

Range

Sensing Input Range

1, 4, 7 *

2, 5, 8

3, 6, 9

Low

High

Low

High

Low

High

Tap A

4.811

0.400

0.096

0.022

0.013

0.010

Tap B

2.466

0.240

0.058

0.019

0.012

0.010

Tap C

1.677

0.190

0.045

0.018

0.011

0.010

Tap D

1.277

0.165

0.039

0.018

0.011

0.010

Tap E

1.036

0.151

0.034

0.017

0.011

0.010

Tap F

0.874

0.142

0.032

0.017

0.011

0.010

Tap G

0.760

0.134

0.030

0.017

0.011

0.010

Tap H

0.674

0.129

0.0029

0.017

0.011

0.010

Tap J

0.611

0.126

0.028

0.017

0.011

0.010

Tap K

0.556

0.123

0.027

0.017

0.011

0.010

Current Sensing

BE1-32R and -32 O/U Directional Power Relays are designed for use with five amperes nominal (50/60
HZ) system current transformer secondaries. The input sensing current transformers within the relay are
rated as follows.

Sensing Input Ranges 1, 4, and 7 *

Continuous Rating: 7 A
1 Minute Rating: 10 A
1 Second Rating: 140 A

* Refer to Section 3, Functional Description, Current Sensing for sensing input range 1, 4, and 7 current
rating and burden considerations.

Sensing Input Ranges 2, 3, 5, 6, 8, and 9

Continuous Rating: 10 A
1 Minute Rating: 15 A
1 Second Rating: 200 A

Burden

Burden values (in ohms) are listed for each sensing input range in Table 1-2.

Table 1-2. Current Sensing Burden in Ohms

* See Section 3, Functional Description, Current Sensing for sensing input range
1, 4, and 7 burden considerations.

Voltage Sensing

Voltage signals are provided by the secondary windings of standard potential transformers (100/200, 50
Hz or 120/240, 60 Hz).

Continuous Voltage Rating: 150% of nominal
Burden: <1 VA

Targets

Electronically latched, manually reset target indicators are optionally available to indicate that a trip output
contact has been energized. Either internally operated or current operated targets may be selected.
Internally operated targets should be selected if the relay has normally closed output contacts.

Current Operated Targets

Minimum Required Current: 200 mA
Continuous Rating: 3 A
2 Minute Rating: 7 A
1 Second Rating: 30 A

9171100990 Rev R BE1-32R, BE1-32O/U General Information 1-9

Output Circuits

Resistive Ratings

120 Vac: Make, break, and carry 7 Aac continuously
250 Vdc: Make and carry 30 Adc for 0.2 s, carry 7 Adc continuously, and break 0.3 Adc
500 Vdc: Make and carry 15 Adc for 0.2 s, carry 7 Adc continuously, and break 0.3 Adc

Inductive Ratings

120 Vac, 125 Vdc, 250 Vdc: Break 0.3 A (L/R = 0.04)

Power Supply

Power supply specifications are listed in Table 1-3. All ac references are at 50/60 Hz.

Table 1-3. Power Supply Specifications

Input Voltage

Type

Nominal Range

O (mid range) 48 Vdc 24 to 150 Vdc 3.6 W

Burden at Nominal

P (mid range)

R (low range) 24 Vdc

T (high range)

* Type R power supply may require 14 Vdc to begin operation. Once operating, the voltage may be
reduced to 12 Vdc.

Pickup

Single-Phase Accuracy

PF = 1: ±2 percent of front panel setting or 0.05 W, whichever is greater

0.5<PF<1: ±5 percent of front panel setting or 0.05 W, whichever is greater

Three-Phase Accuracy

PF =1 ±2 percent of front panel setting or 0.15 W, whichever is greater

0.5<PF<1 ±5 percent of front panel setting or 0.15 W, whichever is greater

This product is not recommended for power factors below 0.10. Contact Basler Electric for recommended
products.

Dropout Accuracy

95% of actual pickup.

125 Vdc
120 Vac

250 Vdc
240 Vac

24 to 150 Vdc
90 to 132 Vac

12 to 32 Vdc *

68 to 280 Vdc
90 to 270 Vac

3.7 W

17.3 VA

3.7 W

3.8 W

24.6 VA

Timing

Response Time

Instantaneous Overpower: <80 ms (60 Hz) or <100 ms (50 Hz) for real power magnitude of

2 times the setting and greater. The response time is character­ized by the graph in Figure 1-13.

Instantaneous Underpower: <50 ms (60 Hz) or <65 ms (50 Hz) for real power magnitude of

0.8 times the setting and less. The response time is character­ized by the graph in Figure 1-14.

Adjustment Range

Definite Time: Thumbwheel adjustable over the range of 0.1 to 9.9 seconds in

increments of 0.1 seconds or by use of a multiplier switch, 1 to
99 seconds in increments of 01 seconds. A setting of 00 enables
instantaneous timing.

1-10 BE1-32R, BE1-32O/U General Information 9171100990 Rev T

Inverse Time: Available for the overpower function only. Adjustment of the

Time Dial thumbwheel selects curves from 01 to 99 in
increments of 01. A setting of 00 enables instantaneous timing.

Refer to Figure 1-15 for examples of the overpower inverse time

characteristic curves.

Figure 1-13. Overpower Instantaneous Response Time

Figure 1-14. Underpower Instantaneous Response Time

9171100990 Rev R BE1-32R, BE1-32O/U General Information 1-11

Figure 1-15. Overpower Inverse Time Characteristic Curves

1-12 BE1-32R, BE1-32O/U General Information 9171100990 Rev T

Timing—continued

Input Type

Nom.
Volts

Range

Switch Position (in watts)

A B C D E F G H J

K

A, B or V

120

1

Hi

2.0

4.0

6.0

8.0

10.0

12.0

14.0

16.0

18.0

20.0

Lo

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

2

Hi

20

40

60

80

100

120

140

160

180

200

Lo 5 10

15

20

25

30

35

40

45

50

3

Hi

100

200

300

400

500

600

700

800

900

1000

Lo

25

50

75

100

125

150

175

200

225

250

C, D, or E

120

1

Hi

6.0

12.0

18.0

24.0

30.0

36.0

42.0

48.0

54.0

60.0

Lo

1.5

3.0

4.5

6.0

7.5

9.0

10.5

12.0

13.5

15.0

2

Hi

60

120

180

240

300

360

420

480

540

600

Lo

15

30

45

60

75

90

105

120

135

150

3

Hi

300

600

900

1200

1500

1800

2100

2400

2700

3000

Lo

75

150

225

300

375

450

525

600

675

750

A, B, or V

208

4, 7

Hi

4.0

8.0

12.0

16.0

20.0

24.0

28.0

32.0

36.0

40.0

Lo

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

5, 8

Hi

40

80

120.

160

200

240

280

320

360

400

Lo

10

20

30

40

50

60

70

80

90

100

6, 9

Hi

200

400

600

800

1000

1200

1400

1600

1800

2000

Lo

50

100

150

200

250

300

350

400

450

500

C, D, or E

208

4, 7

Hi

12.0

24.0

36.0

48.0

60.0

72.0

84.0

96.0

108.0

120.0

Lo

3.0

6.0

9.0

12.0

15.0

18.0

21.0

24.0

27.0

30.0

5, 8

Hi

120

240

360

480

600

720

840

960

1080

1200

Lo

30

60

90

120

150

180

210

240

270

300

6, 9

Hi

600

1200

1800

2400

3000

3600

4200

4800

5400

6000

Lo

150

300

450

600

750

900

1050

1200

1350

1500

Accuracy

Instantaneous: <80 ms (60 Hz) or <100 ms, (50 Hz) up to a real power

magnitude of 2 times the setting
Definite: ±5 percent or 50 ms, whichever is greater
Inverse: +5 percent or 50 ms, whichever is greater

NOTE: Operating time is repeatable within 2% or 50 ms

(whichever is greater) for any combination of time dial and power

settings within the specified operating temperature range.

Power Range (Pickup)

The power pickup range is adjustable over the ranges listed in Table 1-4.

Table 1-4. Power Pickup Ranges

Sensing

1-phase

3-phase

1-phase

or

240

3-phase

or

240

Type Tests

Dielectric Strength

Tested in accordance with IEC 60255-5 and IEEE C37.90. Withstands the following tests.

All circuits to ground: 2,121 Vdc
Input to output circuits: 1,500 Vac or 2121 Vdc

Surge Withstand Capability (SWC)

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

9171100990 Rev R BE1-32R, BE1-32O/U General Information 1-13

Radio Frequency Interference

Maintains proper operation when tested for interference in accordance with IEEE C37.90.2-1987,

Standard Withstand Capability of Relay Systems to Radiated Electromagnetic Interference from
Transceivers.

Shock

In standardized testing, the relay has withstood 15 G in each of three mutually perpendicular planes
without structural damage or degradation of performance.

Vibration

In standardized testing, the relay has withstood 2 G in each of three mutually perpendicular planes, swept
over the range of 10 to 500 Hz for a total of six sweeps, 15 minutes each sweep, without structural
damage or degradation of performance.

UL Recognition

Recognized per Standard 508, file number E97033. Note: Output contacts are not UL recognized for
voltages greater than 250 volts.

GOST-R

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

Temperature

Operating: –40°C to 70°C (–40°F to 158°F)
Storage: –65°C to 100°C (–85°F to 212°F)

Weight

S1 Configuration: 13.5 lb (6.12 kg) maximum
M1 Configuration: 18.5 lb (8.39 kg) maximum

1-14 BE1-32R, BE1-32O/U General Information 9171100990 Rev T

SECTION 2 • CONTROLS AND INDICATORS

INTRODUCTION

All BE1-32R and BE1-32O/U controls and indicators are located on the front panel. The controls and
indicators are shown in Figure 2-1 and described in Table 2-1. Figure 2-1 illustrates a relay with the
maximum number of controls and indicators. Your relay may not have all of the controls and indicators
shown here.

Figure 2-1. Controls and Indicators

9171100990 Rev T BE1-32R, BE1-32O/U Controls and Indicators 2-1

when the

Table 2-1. Control and Indicator Descriptions

Locator Description

A Range Select Switch. This two-position switch is used in conjunction with the Overpower

Tap Selector (locator C) and selects either the high or low overpower pickup range.

B Overpower Time Delay Control. These thumbwheel switches select the overpower trip time

delay. For relays with definite timing, these switches are used in conjunction with the
Overpower Time Delay Multiplier Switch (locator E) to select the overpower trip time delay.

C Overpower Tap Selector. This rotary switch is used in conjunction with the Range Select

Switch (locator A) and selects the overpower pickup point. The tap settings correspond to
the power levels listed in the Tap Select Range Chart (locator M).

D Overpower Pickup Indicator. This light emitting diode (LED) lights when the power level

exceeds the setting of the Overpower Tap Selector (locator C) and Range Select Switch
(locator A).

E Overpower Time Delay Multiplier Switch. This two-position switch selects the multiplier (0.1

or 1.0) applied to the definite time setting of the Overpower Time Delay Control (locator B).

F Underpower Time Delay Control. These thumbwheel switches select the underpower trip

time delay. For relays with definite timing, these switches are used in conjunction with the
Underpower Time Delay Multiplier Switch (locator J) to select the underpower trip time
delay.

G Underpower Pickup Selector. This potentiometer control adjusts the underpower pickup

level from 10 to 95 percent of the overpower pickup setting.

H Power Indicator. This LED lights when operating power is applied to the relay.

I Underpower Pickup Indicator. This LED lights when the power level decreases below the

setting of the Underpower Pickup Selector (locator G).

J Underpower Time Delay Multiplier Switch. This two-position switch selects the multiplier (0.1

or 1.0) applied to the definite time setting of the Underpower Time Delay Control (locator F).

K Target Reset Switch. Operating this switch resets the electronically latched target indicators.

L Target Indicators. The electronically latched red target indicators illuminate

corresponding output relay energizes. The targets are reset by operating the Target Reset
Switch (locator K).

M Tap Selection Chart. This chart indicates the Overpower Tap Selector and Range Select

Switch positions required to initiate an overpower trip at the listed power levels.

N Output Test Pushbuttons. These pushbuttons allow manual actuation of the output relays.

Output relay actuation is achieved by inserting a nonconductive rod through the front panel
access holes.

2-2 BE1-32R, BE1-32O/U Controls and Indicators 9171100990 Rev T

SECTION 3 • FUNCTIONAL DESCRIPTION

TABLE OF CONTENTS

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

INTRODUCTION.................................................................................................................................... 3-1

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

Phase Rotation Sensitivity .................................................................................................................. 3-1

Sensing Input Types ........................................................................................................................... 3-3

kW Transducer ................................................................................................................................... 3-5

Comparator Circuits ........................................................................................................................... 3-5

Pickup ................................................................................................................................................. 3-5

Timing ................................................................................................................................................. 3-6

Outputs ............................................................................................................................................... 3-7

Output Test Pushbuttons .................................................................................................................... 3-7

Power Supply ..................................................................................................................................... 3-7

Target Indicators ................................................................................................................................ 3-7

Figures

Figure 3-1. Function Block Diagram .......................................................................................................... 3-1

Figure 3-2. Type E Sensing with ABC Rotation ........................................................................................ 3-2

Figure 3-3. Type E Sensing with ACB Rotation ........................................................................................ 3-2

Figure 3-4. Type B or V Sensing with ABC Rotation ................................................................................. 3-2

Figure 3-5. Type B or V Sensing with ACB Rotation ................................................................................. 3-3

Figure 3-6. Type A Sensing ....................................................................................................................... 3-3

Figure 3-7. Type B/Type V Sensing .......................................................................................................... 3-4

Figure 3-8. Type C Sensing ....................................................................................................................... 3-4

Figure 3-9. Type D Sensing ....................................................................................................................... 3-5

Figure 3-10. Type E Sensing ..................................................................................................................... 3-6

9171100990 Rev T BE1-32R, BE1-32O/U Functional Description i

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ii BE1-32R, BE1-32O/U Functional Description 9171100990 Rev T

SECTION 3 • FUNCTIONAL DESCRIPTION

INTRODUCTION

BE1-32R and BE1-32O/U relay functions are illustrated in Figure 3-1 and described in the following
paragraphs.

Figure 3-1. Function Block Diagram

Current Sensing

System current transformers (CTs), with 5 Aac (nominal) secondary windings, supply the relay current
sensing transformers with current. For current sensing input ratings, refer to Section 1, General

Information, Specifications.

Sensing Input Range 1, 4, and 7 Current Rating

In some applications, the 7 ampere current rating for sensing input ranges 1, 4, and 7 may be exceeded if
due care is not exercised. The most common CT has a thermal rating factor of 1.33, yielding a maximum
continuous current of 6.67 amperes, which is below the rating of the relay. However, many CTs have
thermal rating factors of 1.5 or 2. In many applications, current that exceeds the rating of the relay might
be applied. The designer/engineer needs to recognize this relay limitation when setting up the steady­state current that the relay is exposed to.

Sensing Input Range 1, 4, and 7 Burden

The burden for sensing input ranges 1, 4, and 7 can be high and have a substantial impact on the total
CT burden calculations and CT performance during fault conditions. The high burden can be easily
accounted for in normal operation and CT selection. However, the larger concern is what occurs during
fault conditions and how other relays on the CT string will be affected by the BE1-32 burden.

Phase Rotation Sensitivity

Relays that use phase current and phase-to-phase voltages to determine direction are sensitive to phase
rotation. BE1-32 Directional Power Relays with sensing type B, E, or V are phase rotation sensitive.
Unless otherwise noted, all connections shown in this manual assume ABC rotation.

9171100990 Rev T BE1-32R, BE1-32O/U Functional Description 3-1

Type E Sensing

Relays with type E sensing (two elements) monitor two phase-to-phase voltages (the third phase is used
as a reference) and two phases of current to determine directional power flow. This is sometimes referred
to as the two-wattmeter method for power flow measurement. Figure 3-2 shows the phasor representation
for ABC rotation. Figure 3-3 shows the phasor representation for ACB rotation.

Figure 3-2. Type E Sensing with ABC Rotation

Figure 3-3. Type E Sensing with ACB Rotation

Type B and V Sensing

Relays with type B sensing (60 hertz) and type V sensing (50 hertz) monitor one phase-to-phase voltage
and one phase of current to determine directional power flow. An internal 30-degree phase delay network
(frequency dependent) aligns the voltage signal with the current signal. Figure 3-4 shows the phasor
representation for monitoring A-phase to B-phase voltage and A-phase current with ABC rotation. Figure
3-5 shows the phasor representation for monitoring A-phase to C-phase voltage with ACB rotation.

Figure 3-4. Type B or V Sensing with ABC Rotation

3-2 BE1-32R, BE1-32O/U Functional Description 9171100990 Rev T

Figure 3-5. Type B or V Sensing with ACB Rotation

Sensing Input Types

The following paragraphs describe the current and voltage sensing types available in BE1-32R and BE1­32O/U relays.

Type A Sensing: Single-Phase Current and Single-Phase Voltage

In three-phase, four-wire circuits, relays with type A sensing calculate the power flowing in the tripping
direction by monitoring line-to-neutral voltage and a single phase of current. Relays with type A sensing
can also be applied in a three-phase, three-wire system using phase-to-ground voltages. Type A sensing
configurations are not phase rotation sensitive. The range switch for this sensing type is calibrated in
single-phase watts. Figure 3-6 illustrates the type A sensing configuration.

Figure 3-6. Type A Sensing

Type B and V Sensing: Single-Phase Current and Single-Phase Voltage

In three-phase, three-wire circuits, relays with type B or type V sensing calculate the power flowing in the
tripping direction by monitoring the line-to-line voltage and a single phase of current. The power equation
assumes balanced conditions. Because the input voltage leads the input current by 30 degrees
(assuming unity power factor), a 30 degree lagging phase shift network is designed into the voltage input
circuit. Type B or V sensing configurations are sensitive to phase rotation. The range switch of this
sensing type is calibrated in single-phase watts. Figure 3-7 illustrates the type B/V sensing configuration.

Type C Sensing: Single-Phase Current and Three-Phase Voltage

In three-phase, three-wire circuits, relays with type C sensing calculate the power flowing in the tripping
direction by monitoring three line-to-line voltages and a single phase of current. The relay measures
actual power even if the system voltages are not balanced. Therefore, the power equation using E

AVE

is
approximate. Type C sensing configurations are not sensitive to phase rotation. The range switch of this
sensing type is calibrated in three-phase watts. Figure 3-8 illustrates the type C sensing configuration.

9171100990 Rev T BE1-32R, BE1-32O/U Functional Description 3-3

Figure 3-7. Type B/Type V Sensing

Figure 3-8. Type C Sensing

Type D Sensing: Three-Phase Current and Three-Phase Voltage

In three-phase, four-wire circuits, relays with type D sensing calculate the power flowing in the tripping
direction by monitoring three line-to-neutral voltages and three phases of current. This sensing type can
also be applied on a three-phase, three-wire system using phase-to-ground voltages. Type D sensing
configurations are not phase rotation sensitive. The range switch of this sensing type is calibrated in
three-phase watts. Figure 3-9 illustrates the type D sensing configuration.

3-4 BE1-32R, BE1-32O/U Functional Description 9171100990 Rev T

10

volts nominal

(setting) watts

×

Figure 3-9. Type D Sensing

Type E Sensing: Two-Phase Current and Three-Phase Voltage

In three-phase, three-wire circuits, relays with type E sensing calculate the power flowing in the tripping
direction by monitoring the three line-to-line voltages and two phases of currents. The relay measures
actual power under balanced or unbalanced conditions. The power equation assumes that conditions are
balanced. Type E sensing configurations are sensitive to phase rotation. The range switch for this sensing
type is calibrated in three-phase watts. Figure 3-10 illustrates the type E sensing configuration.

kW Transducer

Single-phase or three-phase current and voltage signals (determined by the sensing input circuitry type)
are applied to the kW transducer. The signals are applied to a multiplexor that selectively combines the
input conditions and feeds them to a multiplier circuit. The output of the multiplier is true power (watts)
that is then integrated to produce a dc voltage proportional to the monitored power flow. The conditioned,
proportional signal is then applied to the comparator circuits.

Comparator Circuits

A dc signal that represents the monitored power level is applied to the comparator circuits for comparison
with the front panel underpower and overpower settings. When the reference level of the comparators is
surpassed, the appropriate output is energized (if instantaneous timing is selected) or timing is initiated.

Pickup

The overpower pickup point is selected by the front panel Overpower Tap Selector and Range Select
Switch. Table 1-3 lists the overpower pickup range for each sensing input type.

The underpower pickup point is selected by the Underpower Pickup Selector and has an adjustment
range of 10 to 95% of the overpower pickup setting.

Pickup accuracy is ±2% of the front panel setting at unity power factor and ±5% at a power factor above

0.5. The specified accuracy is for current below 10 times the current required to pick up at nominal volts
and unity power factor. The maximum current to maintain specified accuracy can be expressed by the
equation:

9171100990 Rev T BE1-32R, BE1-32O/U Functional Description 3-5

This product is not recommended for power factors below 0.10. Contact Basler Electric for recommended
products.

Figure 3-10. Type E Sensing

Timing

BE1-32R and BE1-32O/U timing is defined by the style number and can be instantaneous, definite time­delayed, or inverse time-delayed.

A relay with instantaneous timing responds to a trip condition with no intentional time delay. For a real­power magnitude of two times the pickup setting, overall response time is less than 80 milliseconds at 60
hertz and less than 100 milliseconds at 50 hertz. The response time decreases as the magnitude of the
input signal increases. Typical response curves are illustrated in Figures 1-13 and 1-14.

A relay with definite timing begins timing toward a trip when the power level exceeds the relay overpower
setpoint or decreases below the underpower setpoint. Overpower and underpower definite time delays
are adjusted by the corresponding Time Delay Control thumbwheel switches and the Time Delay
Multiplier switch. The definite time delay can be adjusted from 0.1 to 9.9 seconds with the Time Delay
Multiplier switch in the times 0.1 position and from 1 to 99 seconds with the Time Delay Multiplier switch
in the times 1.0 position. A Time Delay Control setting of 00 enables instantaneous timing.

Inverse timing is available only for the overpower function. A relay with inverse timing begins timing
toward a trip when the power level exceeds the relay overpower setpoint. The desired inverse time curve
is selected by the Overpower Time Delay Control thumbwheel switches. The available inverse time
characteristic curves are illustrated in Figure 1-15.

3-6 BE1-32R, BE1-32O/U Functional Description 9171100990 Rev T

Outputs

BE1-32R and BE1-32O/U relay outputs are divided into three categories: Overpower and Underpower,
Auxiliary, and Power Supply Status.

Overpower and Underpower Outputs

A dedicated output relay is provided for each overpower and underpower protection function. The BE1­32R is equipped with a set of overpower output contacts that are configured as normally-open (NO) or
normally-closed (NC). The BE1-32O/U is equipped with a set of overpower output contacts and a set of
underpower output contacts. The BE1-32O/U outputs may be any combination of NO or NC contact
configurations. Output contact configuration is determined by the output digit of the relay style number.

Auxiliary Outputs

Auxiliary output contacts are supplied when specified by the Option 3 digit of the relay style number.
Auxiliary outputs are provided for both overpower and underpower protection functions. The auxiliary
output contacts may be NO, NC, or single-pole, double-throw (SPDT).

Power Supply Status Output

The power supply status relay has a set of NC contacts and energizes when operating power is applied to
the BE1-32R or BE1-32O/U. If either side of the power supply output (+12 Vdc or –12 Vdc) fails, the
power supply status relay de-energizes and closes the power supply status output contacts. Shorting bars
within the relay case short-circuit the power supply status output when the upper connection plug is
withdrawn from the case.

Output Test Pushbuttons

The output test pushbuttons allow testing of the overpower and underpower outputs and optional auxiliary
outputs. To prevent accidental operation, the pushbuttons are recessed behind openings in the front
panel. An output is tested by inserting a nonconductive rod through the access holes.

Power Supply

Operating power for the relay circuitry is supplied by a wide-range, electrically isolated, low-burden power
supply. The power supply operating power input is not polarity sensitive. The front panel Power Indicator
and power supply status output indicate when the power supply is operating. Power supply specifications
are listed in Table 1-3.

Target Indicators

Target indicators are optional components selected when a relay is ordered. The electronically latched
and reset targets consist of red LED indicators located on the relay front panel. A latched target is reset
by operating the target reset switch on the front panel. If relay operating power is lost, any illuminated
(latched) targets are extinguished. When relay operating power is restored, the previously latched targets
are restored to their latched state.

A relay can be equipped with either internally operated targets or current operated targets.

Internally Operated Targets

The relay trip outputs are directly applied to drive the appropriate target indicator. Each indicator is
illuminated regardless of the current level in the trip circuit.

Current Operated Targets

A current operated target is triggered by closure of the corresponding output contact and the presence of
at least 200 milliamperes of current flowing in the trip circuit.

NOTE

Prior to September 2007, BE1-32 and BE1-32O/U target indicators consisted of
magnetically-latched, disc indicators. These mechanically latched target
indicators have been replaced by the electronically latched LED targets in use
today.

9171100990 Rev T BE1-32R, BE1-32O/U Functional Description 3-7

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3-8 BE1-32R, BE1-32O/U Functional Description 9171100990 Rev T

SECTION 4 • INSTALLATION

TABLE OF CONTENTS

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

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

RELAY OPERATING GUIDELINES AND PRECAUTIONS .................................................................. 4-1

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

CONNECTIONS................................................................................................................................... 4-21

Notes for Figure 4-20 ....................................................................................................................... 4-21

Notes for Figures 4-25 and 4-26 ...................................................................................................... 4-26

MAINTENANCE ................................................................................................................................... 4-32

Repair ............................................................................................................................................... 4-32

Maintenance Accessories ................................................................................................................ 4-32

STORAGE ............................................................................................................................................ 4-32

Figures

Figure 4-1. Panel Cutting/Drilling, Semi-Flush, S1 Case .......................................................................... 4-2

Figure 4-2. S1 Case Dimensions, Rear View, Double Ended, Semi-Flush Mount ................................... 4-3

Figure 4-3. S1 Case Dimensions, Side View, Double Ended, Semi-Flush Mount .................................... 4-4

Figure 4-4. S1 Case Dimensions, Rear View, Single Ended, Semi-Flush Mount ..................................... 4-5

Figure 4-5. S1 Case Dimensions, Side View, Single Ended, Semi-Flush Mount ..................................... 4-6

Figure 4-6. Panel Cutting/Drilling, Double Ended, Projection Mount, S1 Case ........................................ 4-7

Figure 4-7. S1 Case Dimensions, Rear View, Double Ended, Projection Mount ...................................... 4-8

Figure 4-8. S1 Case Dimensions, Side View, Double Ended, Projection Mount ...................................... 4-9

Figure 4-9. Panel Cutting/Drilling, Single Ended, Projection Mount, S1 Case ........................................ 4-10

Figure 4-10. S1 Case Dimensions, Rear View, Single Ended, Projection Mount ................................... 4-11

Figure 4-11. S1 Case Dimensions, Side View, Single Ended, Projection Mount .................................... 4-12

Figure 4-12. S1 Case Cover Dimensions, Front View............................................................................. 4-13

Figure 4-13. Panel Cutting/Drilling, Semi-Flush, M1 Case ...................................................................... 4-14

Figure 4-14. M1 Case Dimensions, Rear View, Double Ended, Semi-Flush Mount ............................... 4-15

Figure 4-15. M1 Case Dimensions, Side View, Double Ended, Semi-Flush Mount ............................... 4-16

Figure 4-16. Panel Cutting/Drilling, Double Ended, Projection Mount, M1 Case .................................... 4-17

Figure 4-17. M1 Case Dimensions, Rear View, Double Ended, Projection Mount ................................. 4-18

Figure 4-18. M1 Case Dimensions, Side View, Double Ended, Projection Mount .................................. 4-19

Figure 4-19. M1 Case Cover Dimensions, Front View ............................................................................ 4-20

Figure 4-20. Control Circuit Diagram ....................................................................................................... 4-21

Figure 4-21. Internal Connections, Sensing Type A, B, or V .................................................................. 4-22

Figure 4-22. Internal Connections, Sensing Type C ............................................................................... 4-23

Figure 4-23. Internal Connections, Sensing Type D ............................................................................... 4-24

Figure 4-24. Internal Connections, Sensing Type E ................................................................................ 4-25

Figure 4-25. BE1-32R Typical External Connections .............................................................................. 4-26

Figure 4-26. BE1-32O/U Typical External Connections .......................................................................... 4-26

Figure 4-27. Type A Sensing Connections .............................................................................................. 4-27

Figure 4-28. Type B or V Sensing Connections with ABC Rotation ........................................................ 4-27

Figure 4-29. Type B or V Sensing Connections with ACB Rotation ........................................................ 4-28

Figure 4-30. Type C Sensing Connections ............................................................................................. 4-28

Figure 4-31. Type D Sensing Connections ............................................................................................. 4-29

Figure 4-32. Type E Sensing Connections with ABC Rotation ............................................................... 4-30

Figure 4-33. Type E Sensing Connections with ACB Rotation ............................................................... 4-31

9171100990 Rev T BE1-32R, BE1-32O/U Installation i

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ii BE1-32R, BE1-32O/U Installation 9171100990 Rev T

SECTION 4 • INSTALLATION

INTRODUCTION

BE1-32R and BE1-32O/U relays are shipped in sturdy cartons to prevent damage during transit. Upon
receipt of a relay, check the model and style number against the requisition and packing list to see that
they agree. Inspect the relay for shipping damage. If there is evidence of damage, file a claim with the
carrier and notify your sales representative or Basler Electric.

If the relay will not be installed immediately, store it in its original shipping carton in a moisture- and dust­free environment. Before placing the relay in service, it is recommended that the test procedures of
Section 5, Testing be performed.

RELAY OPERATING GUIDELINES AND PRECAUTIONS

Before installing or operating the relay, note the following guidelines and precautions.

• For proper current-operated target operation, a minimum current of 200 milliamperes must flow

through the output trip circuit.

• If a wiring insulation test is required, remove the connection plugs and withdraw the relay from its

case.

CAUTION

When the connection plugs are removed, the relay is disconnected from the
operating circuit and will not provide system protection. Always be sure that
external operating (monitored) conditions are stable before removing a relay for
inspection, test, or service.

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 device.

MOUNTING

Because the relay is of solid-state design, it does not have to be mounted vertically. Any convenient
mounting angle may be chosen. Relay outline dimensions and panel drilling diagrams are illustrated in
Figures 4-1 through 4-19.

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-1

3.03 (77)

6.06 (154)

0.25 (6) diameter, 4 places

C

L

Cut-Out

0.575
(15)

8.63

(219)

0.552
(14)

5.69 (144)

Outer Edge of Cover

0.480
(12)

8.25

(210)

4.13

(105)

0.480
(12)

P0072-12

Figure 4-1. Panel Cutting/Drilling, Semi-Flush, S1 Case

4-2 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

Figure 4-2. S1 Case Dimensions, Rear View, Double Ended, Semi-Flush Mount

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-3

.75

(19.1)

(157.2)

6.19

(49.53)

1.95

10-32 SCREWS

(7.9)

.31

10-32 SCREWS

(102.4)

4.03

4.03

(102.4)

(7.9)

.31

MOUNTING PANEL

(55.75)

2.195

P0066-64

Figure 4-3. S1 Case Dimensions, Side View, Double Ended, Semi-Flush Mount

4-4 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

Figure 4-4. S1 Case Dimensions, Rear View, Single Ended, Semi-Flush Mount

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-5

.75

(19.1)

(157.2)

6.19

(49.53)

1.95

10-32 SCREWS

MOUNTING PANEL

(55.75)

2.195

P0066-69

8.06

(204.72)

(7.9)

.31

Figure 4-5. S1 Case Dimensions, Side View, Single Ended, Semi-Flush Mount

4-6 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

Figure 4-6. Panel Cutting/Drilling, Double Ended, Projection Mount, S1 Case

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-7

Figure 4-7. S1 Case Dimensions, Rear View, Double Ended, Projection Mount

4-8 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

.75

(19.1)

(157.2)

6.19

(49.53)

1.95

10-32 SCREWS

(7.9)

.31

10-32 SCREWS

(102.4)

4.03

4.03

(102.4)

(7.9)

.31

(55.75)

2.195

P0066-67

TERMINAL EXTENSION (TYP.)
FOR DETAILED INSTRUCTIONS,
SEE THE TERMINAL PROJECTION
MOUNTING KIT SUPPLIED.

.25

(6.4)

5/16-18 STUD
2 PLACES

MOUNTING PANEL

Figure 4-8. S1 Case Dimensions, Side View, Double Ended, Projection Mount

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-9

Figure 4-9. Panel Cutting/Drilling, Single Ended, Projection Mount, S1 Case

4-10 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

Figure 4-10. S1 Case Dimensions, Rear View, Single Ended, Projection Mount

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-11

(157.2)

6.19

(49.53)

1.95

10-32 SCREWS

MOUNTING PANEL

(55.75)

2.195

P0066-71

TERMINAL EXTENSION (TYP.)
FOR DETAILED INSTRUCTIONS,
SEE THE TERMINAL PROJECTION
MOUNTING KIT SUPPLIED.

.25
(6.4)

5/16-18 STUD
2 PLACES

MOUNTING PANEL

8.06

(204.72)

(7.9)

.31

.75
(19.1)

Figure 4-11. S1 Case Dimensions, Side View, Single Ended, Projection Mount

4-12 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

P

0066-

68

Figure 4-12. S1 Case Cover Dimensions, Front View

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-13

3.03 (77)

6.06 (154)

0.25 (6) diameter, 4 places

C

L

Cut-Out

0.575
(15)

14.63

(371.5)

0.552
(14)

5.69 (144.5)

Outer Edge of Cover

0.480
(12)

14.25

(362.1)

7.13

(181.0)

0.480
(12)

P0072-21

7.31

(185.7)

2.84 (72.1)

Figure 4-13. Panel Cutting/Drilling, Semi-Flush, M1 Case

4-14 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

Figure 4-14. M1 Case Dimensions, Rear View, Double Ended, Semi-Flush Mount

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-15

P0066-76

10-32 SCREWS

10-32 SCREWS

MOUNTING PANEL

2.195

(55.75)

.31

(7.9)

.31

(7.9)

.75

(19.1)

6.19

(157.2)

1.95

(49.53)

7.03

(178.56)

7.03

(178.56)

Figure 4-15. M1 Case Dimensions, Side View, Double Ended, Semi-Flush Mount

4-16 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

Figure 4-16. Panel Cutting/Drilling, Double Ended, Projection Mount, M1 Case

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-17

Figure 4-17. M1 Case Dimensions, Rear View, Double Ended, Projection Mount

4-18 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

P0066-78

10-32 SCREWS

10-32 SCREWS

2.195

(55.75)

.31

(7.9)

.31

(7.9)

.75

(19.1)

6.19

(157.2)

1.95

(49.53)

7.03

(178.56)

7.03

(178.56)

TERMINAL EXTENTION (TYP.)
FOR DETAILED INSTRUCTIONS,
SEE THE TERMINAL PROJECTION
MOUNTING KIT SUPPLIED.

.25

(6.4)

5/16-18 STUD
2 PLACES

MOUNTING PANEL

Figure 4-18. M1 Case Dimensions, Side View, Double Ended, Projection Mount

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-19

P0066

-79

Figure 4-19. M1 Case Cover Dimensions, Front View

4-20 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

CONNECTIONS

Be sure to check the model and style number of a relay before connecting and energizing the relay.
Incorrect wiring may result in damage to the relay.

Except where noted, connections should be made with wire no smaller than 14 AWG. Relay connections
are shown in the following illustrations.

• Control circuit connections: Figure 4-20

• Internal connections: Figures 4-21 through 4-24

• Typical external connections: Figures 4-25 and 4-26

• Sensing input connections: Figures 4-27 through 4-33

Figure 4-20. Control Circuit Diagram

Notes for Figure 4-20

1. Overpower, underpower, and power supply status output contacts are optionally normally open or
normally closed.

2. Auxiliary output contacts are optionally normally open, normally closed, or SPDT. If SPDT, power
supply status is not available.

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-21

See Figure

4-16

Figure 4-21. Internal Connections, Sensing Type A, B, or V

4-22 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

See Figure 4-16

Figure 4-22. Internal Connections, Sensing Type C

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-23

See Figure 4-16

Figure 4-23. Internal Connections, Sensing Type D

4-24 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

See Figure 4-16

Figure 4-24. Internal Connections, Sensing Type E

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-25

Figure 4-25. BE1-32R Typical External Connections

Figure 4-26. BE1-32O/U Typical External Connections

Notes for Figures 4-25 and 4-26

1. The overpower and underpower output contact configuration is determined by the relay style number
and may be NO or NC.

2. The auxiliary output contact configuration is determined by the relay style number and may be NO,
NC, or SPDT. If SPDT auxiliary output contacts are selected, the power supply status output is not
available.

3. The relay sensing input type determines the configuration of the sensing inputs.

4-26 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

Figure 4-27. Type A Sensing Connections

Figure 4-28. Type B or V Sensing Connections with ABC Rotation

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-27

Figure 4-29. Type B or V Sensing Connections with ACB Rotation

Figure 4-30. Type C Sensing Connections

4-28 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

Figure 4-31. Type D Sensing Connections

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-29

Figure 4-32. Type E Sensing Connections with ABC Rotation

4-30 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

Figure 4-33. Type E Sensing Connections with ACB Rotation

9171100990 Rev T BE1-32R, BE1-32O/U Installation 4-31

MAINTENANCE

BE1-32R and BE1-32O/U relays require no preventative maintenance other than testing performed
according to scheduled practices.

Repair

Repair of the draw-out assembly by replacement of individual circuit boards is not recommended. The
printed circuit boards are not intended to be field serviceable.

If a relay failure occurs in a critical application without sufficient redundancy, protection can be restored by
inserting a spare relay in the mounted and wired case of the relay requiring service. The draw-out
assembly requiring service can then be returned for service in the case from the spare relay. If a spare
case is not available, care should be used when packing the draw-out assembly for shipment. Use anti­static packing material that prevents mechanical damage during transit.

Before returning a relay for repair, contact the Basler Electric Technical Services Department for a return
authorization number.

Maintenance Accessories

Test Plug

Test plugs (Basler P/N 10095) enable relay testing without removing the relay from the case. Test plugs
are simply substituted for the connection plugs. This provides access to the external stud connections as
well as the internal circuitry.

Test plugs consist of black and red phenolic moldings with 20 electrically separated contact fingers
connected to 10 coaxial binding posts. Fingers on the black side are connected to the inner binding posts
(black thumbnuts) and tap into the relay internal circuitry. Fingers on the red side of the test plug are
connected to the outer binding posts (red thumbnuts) and connect to the relay case terminals.

When testing circuits connected to the bottom set of case terminals, the test plug is inserted with the
numbers 1 through 10 facing up. Similarly, when using the test plug in the upper part of the relay, the test
plug is inserted with the numbers 11 through 20 facing up. Due to the construction of the test plug, it is
impossible to insert it with the wrong orientation.

STORAGE

This device contains long-life 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.

4-32 BE1-32R, BE1-32O/U Installation 9171100990 Rev T

SECTION 5 • TESTING

TABLE OF CONTENTS

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

INTRODUCTION.................................................................................................................................... 5-1

TEST PROCEDURES ........................................................................................................................... 5-1

Connections........................................................................................................................................ 5-1

Overpower Pickup and Dropout (Unity Power Factor) ....................................................................... 5-1

Underpower Pickup and Dropout (Unity Power Factor) ..................................................................... 5-1

Instantaneous Time (Overpower) ....................................................................................................... 5-2

Definite Time (Overpower) ................................................................................................................. 5-2

Definite Time (Underpower) ............................................................................................................... 5-2

Inverse Time (Overpower) .................................................................................................................. 5-3

Figures

Figure 5-1. Type A Sensing Test Connections .......................................................................................... 5-4

Figure 5-2. Type B or V Sensing Test Connections .................................................................................. 5-5

Figure 5-3. Type C Sensing Test Connections ......................................................................................... 5-6

Figure 5-4. Type D Sensing Test Connections ......................................................................................... 5-7

Figure 5-5. Type E Sensing Test Connections .......................................................................................... 5-8

9171100990 Rev T BE1-32R, BE1-32O/U Testing i

This page intentionally left blank.

ii BE1-32R, BE1-32O/U Testing 9171100990 Rev T

SECTION 5 • TESTING

INTRODUCTION

The following procedures verify proper relay operation and calibration.

Results obtained from these procedures may not fall within specified tolerances. When evaluating results,
consider three prominent factors:

• Test equipment accuracy

• Testing method (e.g., timing start signal)

• External test set components tolerance level

TEST PROCEDURES

Connections

Relay test connections depend upon the relay sensing type. Connect the relay using the appropriate
illustration as a reference.

Type A sensing: Figure 5-1
Type B, V sensing: Figure 5-2
Type C sensing: Figure 5-3
Type D sensing: Figure 5-4
Type E sensing: Figure 5-5

Overpower Pickup and Dropout (Unity Power Factor)

1. Make the following relay front panel setting adjustments. Note that relays with inverse or
instantaneous timing options will not have an Overpower Time Delay Multiplier Switch.

Range Select Switch: LOW
Overpower Tap Selector: B
Overpower Time Delay Control: 00 (instantaneous)
Overpower Time Delay Multiplier Switch: x0.1
Underpower Pickup Selector: FULLY CCW

2. Apply operating power to the relay at case terminals 3 and 4.

3. Apply nominal sensing input voltage to the appropriate case terminals. A single voltage source may
be connected to paralleled relay sensing voltage inputs to simulate a three-phase source.

4. Apply a current source to the relay current sensing inputs and increase the current level until the
Overpower Pickup Indicator just lights.

The Overpower output contacts, auxiliary output contacts, and target indicators should operate.

Verify that the wattmeter indicates a power reading that is within 2% of the Overpower Tap Selector

setting. The pickup setting for tap B, low range is listed on the front panel Tap Selection Chart.

5. Slowly reduce the applied current until the Overpower Pickup Indicator just turns off.

Verify that the wattmeter indicates a power reading that is within 98% of the pickup value established
in step 4.

Reset the target indicators.

6. Repeat steps 4 and 5 for Overpower Tap Selector settings of E and K.

Underpower Pickup and Dropout (Unity Power Factor)

1. Make the following relay front panel setting adjustments. Note that relays with inverse or
instantaneous timing options will not have an Overpower Time Delay Multiplier Switch.

Underpower Time Delay Multiplier Switch: LOW

Underpower Pickup Selector: FULLY CW
Underpower Time Delay Control: 00 (instantaneous)
Overpower, Underpower Time Delay Multiplier Switch: x0.1
Overpower Tap Selector: B

2. Apply operating power to the relay at case terminals 3 and 4.

9171100990 Rev T BE1-32R, BE1-32O/U Testing 5-1

3. Apply nominal sensing input voltage to the appropriate case terminals. A single voltage source may
be connected to paralleled relay sensing voltage inputs to simulate a three-phase source.

4. Apply a current source to the relay current sensing inputs and increase the current level until it is
greater than the underpower pickup point.

5. Slowly decrease the applied current until the Underpower Pickup Indicator just lights.

The Underpower output contacts, auxiliary output contacts, and target indicators should operate.

Verify that the wattmeter indicates a power reading that is within 2% or 0.1 W, whichever is greater, of
95% of the Overpower Tap Selector setting. The pickup setting for tap B, low range is listed on the
front panel Tap Selection Chart.

6. Slowly increase the applied current until the Underpower Pickup Indicator just turns off.

Verify that the wattmeter reading is within 105% of the underpower pickup value established in step 5.

Instantaneous Time (Overpower)

1. Connect the timer/counter so that timing begins when sensing current is applied, and ends when the
Overpower output energizes.

2. Select a mid-range pickup point and apply sensing voltage that is appropriate for the relay.

3. Apply a step change in current that will yield two times the selected overpower setting at unity power
factor. Measure the interval from current application to Overpower output activation.

The measured time delay should be less than 80 ms at 60 Hz or less than 100 ms at 50 Hz.

Definite Time (Overpower)

1. Connect the timer/counter so that timing begins when sensing current is applied, and ends when the
Overpower output energizes.

2. Make the following front panel setting adjustments.

Range Select Switch: LOW
Overpower Tap Selector: B
Overpower Time Delay Control: 01
Overpower Time Delay Multiplier Switch: x0.1
Underpower Pickup Selector: FULLY CCW

3. Apply operating power to the relay at case terminals 3 and 4.

4. Apply nominal sensing input voltage to the appropriate case terminals. A single voltage source may
be connected to paralleled relay sensing voltage inputs to simulate a three-phase source.

5. Adjust (but do not apply) the current source to a level that is two times the tap value. Apply the
current and measure the interval from current application to Overpower output activation.

The measured time delay should be 0.1 ±0.050 seconds.

6. Repeat step 5 for Overpower Time Delay Control settings of 50 and 99.

For an Overpower Time Delay Control setting of 50, the measured time delay should be 5.0 ±0.25
seconds.

For an Overpower Time Delay Control setting of 99, the measured time delay should be 9.9 ±0.50
seconds.

Definite Time (Underpower)

1. Connect the timer/counter so that timing begins when sensing current is removed, and ends when the
Underpower output energizes.

2. Make the following front panel setting adjustments.

Range Select Switch: LOW
Underpower Pickup Selector: FULLY CW
Underpower Time Delay Control: 01
Overpower, Underpower Time Delay Multiplier Switch: x0.1
Overpower Tap Selector: B

3. Apply operating power to the relay at case terminals 3 and 4.

5-2 BE1-32R, BE1-32O/U Testing 9171100990 Rev T

4. Apply nominal sensing input voltage to the appropriate case terminals. A single voltage source may
be connected to paralleled relay sensing voltage inputs to simulate a three-phase source.

5. Apply a current source to the relay current sensing inputs and increase the current level until it is
greater than the underpower pickup point.

6. Remove the applied current so that the Underpower Pickup Indicator lights and record the interval
from the removal of current until actuation of the Underpower output.

The measured time delay should be 0.1 ±0.05 seconds.

7. Repeat steps 5 and 6 for an Underpower Time Delay Control setting of 05.

The measured time delay should be 0.5 ±0.05 seconds.

8. Repeat steps 5 and 6 for an Underpower Time Delay Control setting of 50 and an Underpower Time
Delay Multiplier Switch setting of x1.0.

The measured time delay should be 50.0 ±2.50 seconds.

Inverse Time (Overpower)

1. Connect the timer/counter so that timing begins when sensing current is applied, and ends when the
Overpower output energizes.

2. Make the following front panel setting adjustments.

Range Select Switch: LOW
Overpower Tap Selector: B
Overpower Time Delay Control: 05
Overpower Time Delay Multiplier Switch: x0.1
Underpower Pickup Selector: FULLY CCW

3. Adjust (but do not apply) the current source to a level that is 4 times the tap value. Apply the current
and measure the interval from current application to Overpower output activation.

The measured time delay should be 0.460 ±0.050 seconds.

4. Adjust (but do not apply) the current source to a level that is 1.5 times the tap value. Apply the current
and measure the interval from current application to Overpower output activation.

The measured time delay should be 1.048 ±0.053 seconds.

5. Adjust (but do not apply) the current source to a level that is 8 times the tap value. Apply the current
and measure the interval from current application to Overpower output activation.

The measured time delay should be 0.282 ±0.050 seconds.

9171100990 Rev T BE1-32R, BE1-32O/U Testing 5-3

NOTES

1. Type A sensing is calibrated in single-phase watts. If a wattmeter is not available, use the following equation to
determine the pickup current that corresponds to the desired overpower or underpower pickup in watts. Adjust
the relay test set to produce this current value.

𝑊 = 𝑉𝐴× 𝐼

W is the desired pickup in watts (front panel setting).
V is the applied voltage.
I is the applied current.

With a wattmeter, W is the wattmeter reading.

2. Terminals 1 and 10 are the overpower trip output device connections for both BE1-32R and BE1-32O/U.
Terminals 2 and 10 are the underpower output connections for the BE1-32O/U.

3. Terminals 17 through 20 are auxiliary output contacts. Determine the auxiliary output contact configuration by
referring to the relay style number.

Figure 5-1. Type A Sensing Test Connections

5-4 BE1-32R, BE1-32O/U Testing 9171100990 Rev T

NOTES

1. Types B and V (30° phase shift) sensing are calibrated in single-phase watts. If a wattmeter is not available, use
the following equation to determine the pickup current that corresponds to the desired overpower or underpower
pickup in watts. Adjust the relay test set to produce this current value.

𝑉

× 𝐼

𝑊 =

W is the desired pickup in watts.
V is the applied voltage.
I is the applied current.

With a wattmeter, W is determined by the following equation.

𝐴

3

√

𝑊𝑎𝑡𝑡𝑚𝑒𝑡𝑒𝑟 𝑅𝑒𝑎𝑑𝑖𝑛𝑔

𝑊 =

2. Terminals 1 and 10 are the overpower trip output device connections for both BE1-32R and BE1-32O/U.
Terminals 2 and 10 are the underpower output connections for the BE1-32O/U.

3. Terminals 17 through 20 are auxiliary output contacts. Determine the auxiliary output contact configuration by
referring to the relay style number.

1.5

Figure 5-2. Type B or V Sensing Test Connections

9171100990 Rev T BE1-32R, BE1-32O/U Testing 5-5

NOTES

1. Type C (Scott or T-connected) sensing is calibrated in three-phase watts. If a wattmeter is not available, us the
following equation to determine the pickup current that corresponds to the desired overpower or underpower
pickup in watts. Adjust the relay test set to produce this current value.

𝑊 =√3 × 𝑉𝐴× 𝐼

W is the desired pickup in watts.
V is the applied voltage.
I is the applied current.

With a wattmeter, W is determined by the following equation.

𝑊 = 2 × 𝑊𝑎𝑡𝑡𝑚𝑒𝑡𝑒𝑟 𝑅𝑒𝑎𝑑𝑖𝑛𝑔

2. Terminals 1 and 10 are the overpower trip output device connections for both BE1-32R and BE1-32O/U.
Terminals 2 and 10 are the underpower output connections for the BE1-32O/U.

3. Terminals 17 through 20 are auxiliary output contacts. Determine the auxiliary output contact configuration by
referring to the relay style number.

Figure 5-3. Type C Sensing Test Connections

5-6 BE1-32R, BE1-32O/U Testing 9171100990 Rev T

NOTES

1. Type D sensing is calibrated in three-phase watts using single-phase sensing inputs. Using the test connections
shown, the relay may be calibrated in true three-phase power using one-third of the pickup current corresponding
to the desired overpower or underpower pickup in watts. Adjust the relay test set to produce this current value
from the following equation.

𝑊 = 3 × 𝑉𝐴× 𝐼

W is the desired pickup in watts.
V is the applied voltage.
I is the applied current.

With a wattmeter, W is determined by the following equation.

𝑊 = 2 × 𝑊𝑎𝑡𝑡𝑚𝑒𝑡𝑒𝑟 𝑅𝑒𝑎𝑑𝑖𝑛𝑔

2. Terminals 1 and 10 are the overpower trip output device connections for both BE1-32R and BE1-32O/U.
Terminals 2 and 10 are the underpower output connections for the BE1-32O/U.

3. Terminals 17 through 20 are auxiliary output contacts. Determine the auxiliary output contact configuration by
referring to the relay style number.

Figure 5-4. Type D Sensing Test Connections

9171100990 Rev T BE1-32R, BE1-32O/U Testing 5-7

NOTES

1. Type E sensing is calibrated in three-phase watts using single-phase sensing inputs. Using the test connections
shown, the relay may be calibrated in true three-phase power using one-half the pickup current that corresponds
to the desired overpower or underpower pickup in watts. Adjust the relay test set to produce this current value
from the following equation.

𝑊

𝐼 = 0.5 ×

W is the desired pickup in watts.
V is the applied voltage.
I is the applied current.

With a wattmeter, W is determined by the following equation.

𝑉

𝑊 = 2 × 𝑊𝑎𝑡𝑡𝑚𝑒𝑡𝑒𝑟 𝑅𝑒𝑎𝑑𝑖𝑛𝑔

2. Terminals 1 and 10 are the overpower trip output device connections for both BE1-32R and BE1-32O/U.
Terminals 2 and 10 are the underpower output connections for the BE1-32O/U.

3. Terminals 17 through 20 are auxiliary output contacts. Determine the auxiliary output contact configuration by
referring to the relay style number.

Figure 5-5. Type E Sensing Test Connections

5-8 BE1-32R, BE1-32O/U Testing 9171100990 Rev T

12570 State Route 143

P.A.E. Les Pins

No. 59 Heshun Road Loufeng District (N)

111 North Bridge Road

Highland IL 62249-1074 USA
Tel: [phone]
Fax: [phone]
email: [e-mail]

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P.R. CHINA
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15-06 Peninsula Plaza
Singapore 179098
Tel: [phone]
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