Basler Electric BE1-47N User Manual

INSTRUCTION MANUAL

FOR

VOLTAGE PHASE SEQUENCE RELAY

BE1-47N

Publication: 9170400990
Revision: J 03/12

INTRODUCTION

This instruction manual provides information about the operation and installation of the BE1-47N Voltage
Phase Sequence Relay. To accomplish this, the following information is provided:

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

WARNING!

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

NOTE

Be sure that the BE1-47N 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 BE1-47N is configured in a system with other devices, it is
recommended to use a separate lead to the ground bus from each unit.

9170400990 Rev J BE1-47N Introduction i

First Printing: September 1985

Printed in USA

© 1985-2012 Basler Electric, Highland Illinois 62249 USA

All Rights Reserved

March 2012

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 BE1-47N Introduction 9170400990 Rev J

REVISION HISTORY

The following information provides a historical summary of the changes made to the BE1-47N instruction
manual (9170400990). Revisions are listed in reverse chronological order.

Manual

Revision and Date

J, 03/12

I

H, 09/07

G, 07/06

F, 02/01

E, 08/98

D, 11/89

C

B

A

—, 09/85

Change

 Updated GOST-R statement in Section 1.
 Standardized case and cover drawings in Section 4.
 Updated Storage statement in Section 4.

 This revision letter not used.
 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 contents of Section 7, Manual Change Information to the

manual introduction and deleted Section 7.

 Moved contents of Section 6, Maintenance to Section 4 and deleted

Section 6.

 Corrected Target options of style chart (added N) None).
 Corrected/clarified output contact specifications.
 Added Gost R certification statement.
 Updated all front panel illustrations to show laser-cut overlay.

 Updated the S1 case drawings.
 Updated the style chart.

 Removed all references to Service Manual 9170400620.
 In Specifications:

o Added phase rotation sensitivity
o Updated the dielectric strength information
o Updated the power supply input voltage range and burden data
o Added RFI and UL information

 Corrected errors in style chart.
 Revised functional description of power supply.
 Added outline drawings to cover all mounting options.
 Updated manual format.

 Negative sequence voltage timing accuracy statement clarified.
 Improved wording of test procedures.
 Corrected projection-mount case illustrations.

 Revision history not available.
 Revision history not available.
 Revision history not available.
 Initial release

9170400990 Rev J BE1-47N Introduction iii

iv BE1-47N Introduction 9170400990 Rev J

CONTENTS

SECTION 1  GENERAL INFORMATION ................................................................................................ 1-1

Purpose ............................................................................................................................................... 1-1

Application ........................................................................................................................................... 1-1

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

Model and Style Number..................................................................................................................... 1-1

Style Number Example ................................................................................................................. 1-2

Specifications ...................................................................................................................................... 1-3

Voltage Sensing Input .................................................................................................................. 1-3

Power Supply................................................................................................................................ 1-3

Target Indicators ........................................................................................................................... 1-3

Negative Sequence Voltage ......................................................................................................... 1-3

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

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

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

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

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

Agency Recognition/Certification.................................................................................................. 1-5

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

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

SECTION 3  FUNCTIONAL DESCRIPTION ........................................................................................... 3-1

Introduction ......................................................................................................................................... 3-1

Voltage Sensing .................................................................................................................................. 3-1

Phase Shifting ..................................................................................................................................... 3-2

Pickup Scaling ..................................................................................................................................... 3-2

Low-Pass Filter ................................................................................................................................... 3-2

Negative Sequence Voltage Comparator ........................................................................................... 3-2

Overvoltage/Undervoltage Comparator .............................................................................................. 3-2

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

Outputs ................................................................................................................................................ 3-6

Main Outputs ................................................................................................................................ 3-6

Auxiliary Outputs .......................................................................................................................... 3-6

Power Supply Status Output ........................................................................................................ 3-7

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

Internally Operated Targets .......................................................................................................... 3-6

Current Operated Targets ............................................................................................................ 3-6

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

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

Internally Operated Targets .......................................................................................................... 3-7

Current Operated Targets ............................................................................................................ 3-7

SECTION 4  INSTALLATION .................................................................................................................. 4-1

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

Relay Operating Guidelines and Precautions ..................................................................................... 4-1

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

Connections ........................................................................................................................................ 4-9

Maintenance ...................................................................................................................................... 4-12

Storage .............................................................................................................................................. 4-12

9170400990 Rev J BE1-47N Introduction v

SECTION 5  TESTING ............................................................................................................................ 5-1

Introduction ......................................................................................................................................... 5-1

Operational Tests ................................................................................................................................ 5-1

Negative Sequence Voltage Pickup and Dropout ........................................................................ 5-1

Overvoltage Pickup and Dropout .................................................................................................. 5-2

Undervoltage Pickup and Dropout ................................................................................................ 5-2

Verification Tests ................................................................................................................................. 5-3

Definite Time Verification .............................................................................................................. 5-3

Inverse Time Verification .............................................................................................................. 5-3

vi BE1-47N Introduction 9170400990 Rev J

SECTION 1 • GENERAL INFORMATION

Purpose

BE1-47N Voltage Phase Sequence Relays respond to negative sequence voltage (V2) which results from
a fault or misconnection on a balanced, three-phase system.

Application

BE1-47N relays are designed to protect equipment from damage caused by phase failure, reverse phase
sequence, phase unbalance, undervoltage, or overvoltage.

The relay detects reverse phase connection of lines, transformers, motors, generators, and synchronous
condensers and is often applied in automatic transfer schemes to assure connection of proper phase
rotation as well as voltage conditions. When used in a motor application, the relay provides protection by
preventing motor startup during open-phase or reverse-phase conditions and by tripping the motor off line
for phase unbalance, undervoltage, or overvoltage conditions.

Negative sequence voltage is the result of any unequal phase condition on the source. This can be due to
unequal single-phase loads on the system or unequal transformer impedances between phases. A 1 to
2% level can normally be expected in an industrial supply. Any significant increase above this level can
indicate a power service problem and could lead to serious plant problems. The BE1-47N has the ability
to detect negative sequence voltage levels of this magnitude.

Undervoltage and voltage balance relays have traditionally been applied to protect induction motors from
operating with one phase open. These relays may not reliably detect this condition due to the back-EMF
of the motor on the open phase. However, an induction motor with a starting current of 6 per-unit will
generate a negative sequence voltage of 16% if fully loaded when a fuse opens. The negative sequence
voltage will be somewhat reduced if the motor is not fully loaded. The sensitivity of the BE1-47N and its
insensitivity to frequency allow reliable protection to be applied to motors.

Motor losses and current unbalance increase with the negative-sequence voltage level. The increased
loss due to negative sequence voltage is not a function of motor load but is independent. A machine
operating with 3.5% negative sequence voltage will have its losses increased by 25%. An open fuse on a
power factor correction capacitor bank can result in a significant increase in negative sequence voltage.
The effect of this condition can be costly.

BE1-47N relays can be applied to protect motor buses from an open phase. It can also be applied to
protect critical individual motors, static, and non-rotating loads from the effects of negative sequence
voltage.

A choice of time delay characteristics allows the relay to respond in the desired manner for a wide variety
of transient and fault conditions.

BE1-47N relays may also be used to provide overvoltage and undervoltage protection. A separate time
delay is utilized to prevent shutdown of equipment during minor voltage dips and to permit sequential
operation when the relay is being used in a supervisory capacity.

Phase Rotation Sensitivity

Relays that use phase-to-phase voltage to determine negative sequence are sensitive to phase rotation.
BE1-47N relays are phase rotation sensitive. Unless otherwise noted, all connections shown in this
manual assume ABC rotation.

Model and Style Number

BE1-47N electrical characteristics and operational features are defined by a combination of letters and
numbers that make up the style number. Model number BE1-47N designates the relay as a Basler
Electric Voltage Phase Sequence Relay. The model number, together with the style number, describes
the options included in a specific device and appears on the front panel, draw-out cradle, and inside the
case assembly.

The style number identification chart for the BE1-47N relay is illustrated in Figure 1-1.

9170400990 Rev J BE1-47N General Information 1-1

Figure 1-1. BE1-47N Style Identification Chart

Style Number Example

If a BE1-47N relay has a style number of E3F–E1P–A1R0F, the relay has the following features:

E ------- Three-phase, line-to-line voltage sensing

3 -------- 120 Vac, 60 Hz nominal sensing voltage input

F -------- Two output relays with normally open (NO) contacts

E1 ------ Timing characteristic uses definite time delays

P ------- Relay control power is 125 Vdc or 120 Vac, nominal

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

1 -------- Instantaneous undervoltage element

R ------- Instantaneous overvoltage element

0 -------- No auxiliary output relay

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

1-2 BE1-47N General Information 9170400990 Rev J

Specifications

Input Voltage

Range

O (midrange)

48 Vdc

24 to 150 Vdc

4.6 W

125 Vdc

24 to 150 Vdc

4.6 W

120 Vac

90 to 132 Vac

17.5 VA

12 to 32 Vdc ∗

48 Vdc

24 to 150 Vdc

4.6 W

125 Vdc

24 to 150 Vdc

4.6 W

250 Vdc

68 to 280 Vdc

4.6 W

240 Vac

90 to 270 Vac

24.4 VA

BE1-47N electrical and physical specifications are listed in the following paragraphs.

Voltage Sensing Input

Voltage

Nominal: 120 or 208 Vac (60 Hz)
100 or 173 Vac (50 Hz)
Maximum Continuous: 160% of nominal

Frequency

Nominal: 50 or 60 Hz (dictated by relay style)
Range
50 Hz Sensing Input: 45 to 55 Hz
60 Hz Sensing Input: 55 to 65 Hz

Burden: ≤2 VA per phase

Power Supply

Power supply types and specifications are listed in Table 1-1.

Table 1-1. Power Supply Ratings

Type

P (midrange)

R (low range)

S (midrange)

T (high range)

∗ Type R power supply initially requires 14 Vdc to begin operating. Once operating, the input

voltage may be reduced to 12 Vdc and operation will continue.

Nominal

24 Vdc

Input Voltage

Burden at Nominal

4.6 W

Target Indicators

Electronically latched, manually reset target indicators are optionally available to indicate closure of the
trip output contacts. Either internally operated or current operated targets may be specified. Internally
operated targets should be selected when normally-closed (NC) output contacts are specified.

Current Operated Targets

Minimum Rating ......................... 200 mA flowing through the trip circuit

Continuous Rating ...................... 3 A

1 Second Rating ......................... 30 A

2 Minute Rating .......................... 7 A

Negative Sequence Voltage

Pickup

Setting Range ............................ 2 to 32% of nominal

Increment ................................... 2%

Accuracy .................................... ±1 unit of the percent setting of the negative sequence voltage at

nominal frequency (50 or 60 Hz as defined by the style number)

Dropout ............................................. 98% of pickup

9170400990 Rev J BE1-47N General Information 1-3

Time Delay

Definite

Setting Range ...................... 0.1 to 9.9 s

Increment ............................. 0.1 s

Accuracy .............................. ±5% or ±50 ms of the time setting

Inverse

Setting Range ...................... 01 to 99

Increment ............................. 1

Accuracy .............................. ±5% or ±50 ms of the indicated time of the selected time-dial curve

illustrated in Figure 3-3

Instantaneous

Delay .................................... <50 ms

Undervoltage

Pickup

Setting Range ............................ 2 to 32% below nominal

Increment ................................... 2%

Accuracy..................................... ±1% of the pickup setting

Dropout ............................................. 98% of pickup

Time Delay

Definite

Setting Range ...................... 0.1 to 9.9 s

Increment ............................. 0.1 s

Accuracy .............................. ±5% of the time setting

Inverse

Setting Range ...................... 01 to 99

Increment ............................. 1

Accuracy .............................. ±5% or ±50 ms of the indicated time of the selected time-dial curve

illustrated in Figure 3-3

Instantaneous

Delay .................................... <50 ms

Overvoltage

Pickup

Setting Range ............................ 2 to 32% above nominal

Increment ................................... 2%

Accuracy..................................... ±1% of the pickup setting

Dropout ............................................. 98% of pickup

Time Delay

Definite

Setting Range ...................... 0.1 to 9.9 s

Increment ............................. 0.1 s

Accuracy .............................. ±5% of the time setting

Inverse

Setting Range ...................... 01 to 99

Increment ............................. 1

Accuracy .............................. ±5% or ±50 ms of the indicated time of the selected time-dial curve

illustrated in Figure 3-3

Instantaneous

Delay .................................... <50 ms

1-4 BE1-47N General Information 9170400990 Rev J

Output Contacts

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,

break 0.3 Adc

500 Vdc ...................................... Make and carry 15 Adc for 0.2 s, carry 7 Adc continuously,

break 0.3 Adc

Inductive Ratings

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

Type Tests

Shock ................................................ Withstands 15 G in each of three mutually perpendicular planes

without structural damage or performance degradation.

Vibration ............................................ Withstands 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.

Dielectric Strength ............................ Tested in accordance with IEC 255-5 and IEEE C37.90

All circuits to ground ......... 2,121 Vdc applied for 1 min

Input to output circuits ...... 1,500 Vac or 2,121 Vdc applied for 1 min

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.

Surge Withstand Capability .............. Qualified to IEEE C37.90.1-1989, Standard Surge Withstand

Capability (SWC) Tests for Protective Relays and Relay Systems.

Fast Transient ................................... Qualified to IEEE C37.90.1-1989

Impulse ............................................. Qualified to IEC 255-5

Physical

Temperature

Operating Range ........................ –40 to 70°C (–40 to 158°F)

Storage Range ........................... –65 to 100°C (–85 to 212°F)

Weight ............................................. 14 lb (6.35 kg)

Case Size ......................................... S1 (Refer Section 4 for case dimensions.)

Agency Recognition/Certification

UL Recognition ................................. UL recognized per Standard 508, File E97033

NOTE: Output contacts are not UL recognized for voltages greater
than 250 volts.

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

Russia.

9170400990 Rev J BE1-47N General Information 1-5