Drives, motors and switchgear
ROUND UP
B
MG
’s focus on extending its heat exchange business encom-
passes a new arrangement where SA Heat Exchange provides
a manufacture, refurbishment and repair service for BMG to all
industries, particularly to the sugar sector.
“In conjunction with SA Heat Exchange, BMG now offers the supply
and support of an extensive range of heat exchange products that
includes Transon modular shell and tube heat exchangers, Blockfin
heavy duty extended fin heat exchangers and an ultrasonic cleaning
and treatment service,” says Richard Strickland, divisional director,
engineered products, BMG – Bearing Man Group. “Transon modular
shell and tube heat exchangers, which have been used in the local
sugar industry for over 35 years, are designed for sugar processing
operations that include coolers, economisers and mash feed heaters,
as well as calorifiers, after coolers and condensers.”
Transon systems, which are based on the latest heat transfer and
process technology, are designed for the efficient and safe handling
of hydraulic oil in large gearbox systems.These heat exchangers are
used in a large sector of industry - not only as oil coolers, but also
where fluid needs to cooled, or even heated.
This versatile heat exchanger system consists of modules that
facilitate compact plant design and the efficient utilisation of space.
The modular design, which comprises one or more shell and tube
type standard units, enables installations to be extended to meet
increased capacity requirements.
Transon versatile heat exchanger systems now encompass the U3
series of oil coolers and the newly designed U5 series, available at
short lead times.
Single and multi-module units can be arranged in horizontal or
vertical configurations, depending on capacity and size requirements.
Mounting stands are designed for simple, quick installation to match
the related pipe work.
This heat exchanger system is available in a wide range of steels
and alloys, as well as corrosion and abrasion resistant materials.
Standardised interchangeable components enable short lead times
and early delivery of units and spares.
Fluid separation is an important safety feature of this heat ex-
changer system. In the event of seal deterioration, an atmospheric
gap ensures that fluid leaks externally, preventing internal mixing
and cross contamination of fluids.
Elastomeric mountings enable the tube bundle to float within the
shell when subjected to fluctuating temperatures, thereby eliminating
induced thermal shock loads.
For high thermal efficiency, a unique patented shell pass baffle
assembly ensures uni-directional flow at relatively high velocity,
eliminating dead spots. Straight tubes enable unrestricted flow.
During maintenance, individual tubes, or the complete tube bun-
dle, can be removed and replaced in-situ, without disconnecting the
related pipework. No special tools are required and seals are easily
replaceable.
SA Heat Exchange, which specialises in the manufacture of ex-
tended fin products for the sugar industry in South Africa and in
Africa, utilises high speed fin manufacturing technology to provide
the latest, robust industrial grade fin products.
Enquiries:Veronique van Niekerk.Tel. 031 576 6221 or email
.
N
ewElec
’s MA relay with Profibus certifi-
cation, offers the user a choice of using
it as either a standalone electronic motor
protection relay or as part of an automated
process communicating to a PLC. The MA
is equipped with five digital inputs accept-
ing field supply voltages from 24 V to 220 V
ac or dc and four output potential free C/O
contacts, two of which are programmable.
TheMA features adjustable thermal curves
(Class 3 to 40 seconds) to IEC 60255-8, three
independent PTC 100 thermal monitoring cir-
cuits, earth leakage, earth fault, short-circuit
and load loss protection.The MA relays cover
a current range from 0,5 to 250 A directly
through single turn integrated CTs but can
accommodate any current range by using
interposing current transformers.
Automatic coordinated back tripping into
an appropriate back-up circuit breaker on de-
tection of high-energy faults is possible.This
maintains contactor integrity and ensures
the MCC is duly protected against improper
interruptions of high-energy fault currents.
Profibus DP, Modbus RTU and Canbus
protocols are supported and LEDs assist
maintenance personnel in fault finding. Free
front-end software that includes a recorder
facility rounds off an attractive protection
solution.
Enquiries: Luc Dutrieux.Tel. 012 327 1729 or
email
.
Latest heat transfer and process technology for sugar sector
Motor protection for process control
Air drier manufactured for sugar mill in Central Africa.
Electricity+Control
July ‘13
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