BENSHAW ENHANCED KEYPAD Manual de usuario descargar pdf (Pagina 60)

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Standard Medium Voltage Starter Products

Prepackaged Solid State Starters

mVrxe SerIeS

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Highlights:

The Benshaw Medium Voltage Starter is a microprocessor controlled

solid state reduced voltage starter for three phase induction motors.

The starter provides a closed-loop current ramp for smooth stepless

motor acceleration. Supplied in a free standing enclosure.

Enclosures are available in NEMA 12 or NEMA 3R conﬁgurations. The

medium voltage enclosure consists of two distinct compartments.

The medium voltage or power pole section is located in the main

body of the enclosure, whereas the low voltage section containing the

control logic is located behind the door as an isolated compartment.

Each starter is supplied with a load break isolation switch, Class “R”

motor fuses, inline vacuum contactor, solid state power poles, and a

vacuum bypass contactor, which is used to bypass the SCR power

poles once the motor is up to full speed.

The logic control incorporates the MX

computer that has all the

circuitry required to drive the power semiconductors, which are

located in the power section.

MVRXE starters provide solid state reduced voltage starting for

normal operation and full voltage emergency back-up starting, with

complete electronic motor protection at the ﬂip of a switch.

This unique redundant design is ideal for critical applications where

downtime is extremely disruptive and cannot be tolerated.

solid state controls provide precise digital starting and stopping,

motor protection, metering, diagnostics and communications,

standard.

Key Advantages:

• NEMA 12, UL 347 listed

• 45 kV BIL

• Service entrance labeled (optional)

• Built-in self test (BIST) features for

“quick commissioning”

• Solid state reduced voltage

starting — normal operations

• 425 A load break

• Switch selectable emergency back-

up full voltage starter

• MX

-embedded digital control

• Fiber optic ﬁring

• Advanced motor protection

• Advanced metering

• Power quality protection

• Diagnostics and ModBus RTU485

communications standard

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BENSHAW ENHANCED KEYPAD Manual de usuario Pagina 60

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