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Testing Specifications

High Voltage: All input and output terminals will withstand 1500 Vac RMS to chassis or instrument

ground for one minute with a leakage current not to exceed 25 mA, for all terminals to ground. Input

and output circuits are electrically isolated from each other, from other circuits, and from ground.

Surge Withstand Capability: All input and output circuits are protected against system transients.

Units pass all requirements of ANSI/IEEE C.37.90.1‑1989 defining surge withstand capability.

Radiated Electromagnetic Withstand Capability: All units are protected against electromagnetic

radiated interference from portable communications transceivers.

Control Accuracy Specification: All units comply with ANSI/IEEE C57.15‑1986 defining control

accuracy of operation.

Environmental

Temperature Range: Functionality is maintained from ‑40° to +85° C.

Humidity: Functionality is maintained under 95% relative humidity (non‑condensing).

Fungus Resistance: A conformal printed circuit board coating inhibits fungus growth.

The M‑2069 is an adapter panel which, when combined with the M‑2001C or M‑2001D Digital

Tapchanger Control, provides convenient direct replacement for Westinghouse SVC and SVR

controls and Beckwith Electric M‑0067E controls. The M‑2069 can also be used, with the M‑2001

Series Tapchanger Control, as a general purpose LTC transformer control. The M‑2069 permits

changing of the M‑2001 control without adapter panel removal or rewiring.

Interface

External connections are made to two terminal blocks located on the rear of the adapter panel. 

The second terminal block provides auxiliary functions, including self‑test alarm, user‑programmable

alarm, manual raise/lower, operations counter and ∆VAr 2 disable.

Front Panel Controls

AUTO/OFF/MANUAL: toggles between Auto operation of the control and Manual operation that

enables tapchanger adjustment from the front panel using the Raise/Lower toggle switch.

RAISE/LOWER: allows local manual Raise and Lower commands to be initiated in Manual mode.

LOCAL/REMOTE (SCADA CUTOUT): allows Local blocking of SCADA commands.

Overview

An economical, microprocessor-based relay designed to replace out of date,

aging electromechanical relays, with models to replace existing GE and ABB

relays with no wiring changes. Basler Electric also offers the BE1-79A in an S1

case for new installations.

Features

• Directly replaces ACR relays and RC relays (non z-coil models) in

existing case with no wiring changes required.

• A single BE1-79A configuration replaces multiple ACR types.

• Front panel indicators for relay power and recloser status.

• Easy setup with front panel communications interface.

• Economical, microprocessor-based design.

• Available in S1 case for new installations and S2 and FT-32 cradle for

retrofits.

Benefits

• Minimize downtime with direct replacement for ACR relays and RC

relays (non z-coil models).

• Reduce inventory with a single BE1-79A relay that replaces

multiple ACR types.

• Uncomplicated testing made possible with front panel indicators

for relay power and recloser status.

• Accurate, repeatable, and reliable operation.

• Reduced battery load with low burden power supply.

• Easily perform in-case system and device tests using test plugs.

 The BE1-47N has the ability to detect negative

sequence voltage levels of this magnitude.

Undervoltage and voltage balance relays have tradition

ally been applied for the protection of 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 blows. 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 fre

quency will provide reliable protection for 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 stated

losses increased by 25%. A blown fuse on a power factor

correction capacitor bank can result in a negative se

quence voltage increase. The increase in motor losses

can be costly.

The BE1-47N should be applied to protect motor buses

from a 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.

The BE1-47N may also be used to provide over/

undervoltage protection. A separate time delay is uti

lized to prevent shutdown of equipment for minor volt

age dips and to permit sequential operation when the

relay is being used in a supervisory capacity.

APPLICATION

PURPOSE

The BE1-47N is designed to protect three-phase ma

chines against damage caused by phase failure, reverse

phase sequence phase unbalance, undervoltage and

overvoltage.

The BE1-47N responds to the negative sequence voltage

which results from a fault or misconnection on a balanced

three-phase system.

The BE1-47N detects reverse phase connection of lines,

transformers, motors, generators, and synchronous con

densers and is often applied in automatic transfer schemes

to assure connection of proper phase rotation as well as

voltage conditions. The Negative Sequence Voltage Re

lay is recommended for all important buses supplying

motor loads. When used in motor protection, the relay will

provide protection by preventing start-up of the motor for

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. This can be due to unequal single-phase

loads on the system or unequal transformer impedances

between the phases. A 1% – 2% negative sequence level

can normally be expected in an industrial supply. Any

significant increase above this level is an indication of a

power service problem that could lead to serious plant

problems. The BE1-47N has the ability to detect negative

sequence voltage levels of this magnitude.

The BE1-47N Voltage Phase Sequence Relay provides protection for rotating equipment

from the damaging effects of excessive negative sequence voltage resulting from phase

failure, phase unbalance and reversed phase sequence.

ADVANTAGES

• Responds to true negative sequence voltage component.

• Unaffected by frequency variations of ±5 Hz.

• Negative Sequence Voltage adjustment range of 2 – 32 percent.

• Optional Over and Undervoltage measuring elements.

• Low sensing and supply burdens.

• Instantaneous, Definite and Inverse time delay characteristics available for

each measuring element.

• Qualified to the requirements of

— IEEE C37.90.1-1989 and IEC 255 for surge withstand capability;

— IEC 255-5 for impulse.

• UL recognized per Standard 508. UL File #E97033.

• Gost R certified per the relevant standards of Gosstandart of Russia

• Five year warranty.

The DECS-100 is a microprocessor-based regulation system designed to control the

output of a brushless excited synchronous generator. The DECS-100 is perfect for

paralleling applications where generator to generator and/or generator to utility

paralleling occurs with VAR/PF control and Over- and Underexcitation Limiting.

The DECS-100 offers high functionality,communications, and performance at an

extremely affordable price. The DECS-100 is very rugged and offers an extremely

robust mechanical design that is cURus recognized, CE compliant, and DNV certified.

FEATURES

• Microprocessor based

• 0.25% Voltage Regulation Accuracy

• 0.5% accuracy up to 40% THD (harmonics associated with 6 SCR load)

• 63Vdc @ 7Adc PWM output

• 0-3X V/Hz limiting

• Soft Start capability

• 20 standard stability selections and one customizable selection

• VAR/PF control

• Overexcitation limiting

• Underexcitation limiting

• Voltage Matching

• Manual Mode (Field current regulation)

• Paralleling input from 1 or 5A CT secondaries

• Nominal sensing inputs of 120. 240. 480 and 600Vac

• Power Input from 50/60Hz shunt connections or PMGs operating at 50 to 400Hz

• Five generator protection functions including Loss of Sensing transfer to manual

• Alarm Contact Output

• Accessory input

• LED Annunciation of operating conditions

• Setup via PC using BESTCOMS software (included)

• cURus recognition per UL 508 and CSA Standard C22.2 No. 14

• DNV Standard for Certification 2.4

• CE compliant