Ingersoll-Rand TRANE AFDJ, Инструкция по установке, эксплуатации и обслуживанию

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Overview
AFDJ-SVU01D-EN 9
Typical Configurations
The Trane-supplied Medium Voltage PowerFlex
®
7000
drives is available in two air-cooled versions, called
Frames: 1) 7000 A-Frame, and 2) 7000 B-Frame. Each
Frame is specified based on the physical size and horse
power (HP) or KW rating of the equipment. Generally, A-
Frame is the smallest frame air-cooled drive, and B-Frame
is the largest air-cooled drive. The following Rockwell Safe
Electric Work Practices (SEWP) applies to typical
configurations for PowerFlex 7000 drives regardless of the
frame size
1
.
Cabinet
Cabinet Energy Sources
A typical PowerFlex 7000 drive has a main medium
voltage power supply and two other secondary control
voltages power supply. In addition, a customer may
specify a configuration with additional energy sources
such as a UPS back-up power supply.
• Your responsibility is to look for all sources of
hazardous energy to confirm the drive you will service
or maintain matches the drawing.
• You must identify each source of power supplied to the
cabinet and implement steps to control the each power
source prior to performing your work.
• Other safety measures may have to be implemented
for work such as removing cabinet tray covers/power
cages to check the condition of “snubber capacitors”
prior to performing the work.
Cabinet Design
Medium voltage cabinet doors are key interlock controlled
and designed to open in sequence.
• Cabinet doors must only be opened in the engineered
sequence and must be treated as if they are live until
de-energization is verified.
• Control voltage cabinet door are black in color and can
be opened without a key. The inside of the control
voltage cabinet must be treated as if they are live until
de-energization is verified.
The key interlocking scheme is a cornerstone of the safety
devices built into a product. You are not authorized to work
on, and must refuse to work on any installed MV product
where the key interlocks are missing, damaged or
compromised in any way. Keys can never be duplicated
without the owner of the product signing a waiver. Service
personnel should never be in possession of their own
duplicate keys.
Match the personal protective equipment (PPE) you use to
the voltage level and the hazard category to make sure that
you have the correct protection for the specific work you
are doing. The PPE must be adequate to protect against
shock as well as arc flash injury.
Cabinet Voltage Levels
For the purpose of medium voltage technical work,
medium voltage is defined as 1,000–15,000 volts. Rockwell
Automation medium voltage products presently range
from 2,300–7,200 volts. The control voltage is defined as
600 volts or less. It is typically 480 or 120 volts. Some
cabinets also have 5–24 Vdc power supply hooked up to
them for logic circuit boards or indicator meters.
The voltages upstream to the Rockwell medium voltage
product can be higher than 7,200 volts. You are not
authorized/trained or equipped to work on these systems.
The customers’ staff that are trained and authorized to de-
energize the equipment must be used for this work.
PowerFlex 7000 Medium Voltage Cabinet
Medium Voltage Power De-energization
Drive, Disconnect, or Breaker
• Put on the Personal Protective Equipment (PPE)
necessary to protect from the shock and arc flash
hazards from both medium and control voltages.
• Disconnect the MV input power source to the
PowerFlex 7000 drive cabinets by placing the drive
control; disconnect handle or circuit breaker switch in
the “off” position.
– Apply the Lockout-Tagout device(s) and lock(s).
– The drive cabinet doors are locked and the input
power control box must remain closed when de-
energizing the MV power source.
• Placing the control, handle or switch in the “Off”
position should de-energized the power only
down stream from the cabinet.
• Medium voltage power remains energized
upstream of the control, handle or switch.
• Use a properly rated meter to verify the medium
voltage power on the downstream side of the drive/
disconnect/breaker is de-energized.
– Follow meter test procedures to confirm the meter
is reading accurately prior to verifying de-
energization.
1
Rockwell also manufactures a C-Frame, which is liquid-cooled, but which is larger than our applications.