Kokota

Amplified quality on board

Fruitful output

PV GENERATION : In the IRP2010 of South Africa, the paper is addressing the issue of necessity for energy mix in South Africa and PV solutions is one of the critical solutions suggested.
LINE CONSTRUCTION : "Surveys; pegging and soil nominations" , "Foundations excavations; shuttering and casting" , "Steel work supply; assembly and erection."
We do lines construction works.
Complete utility, mine or plant distribution systems.
LED BENEFITS : Save energy, Protect the environment, Reduce maintenance costs, Provide better light quality for improved visibility and safety
Kokota Holdings Pty (Ltd) has a legacy of good workmanship in the provision of civil and earthworks.
These services are enhanced by our comprehensive range of skilled manpower and equipment.

Our Portifolio

Civil Work

The establishment of any infrastructure lies in the ability of the civil works quality and strength to ensure the sustainable existence and reliability. Kokota (Pty) Ltd has a legacy of good workmanship in the provision of civil and earthworks.

Our expertise includes amongst others trenching, foundations, manhole construction, excavation, building and brick works; plastering; painting; and maintenance. Also quite critical is the condition monitoring of foundations and pipe lines which we do with the help of the Ultrasonic testing technology. This technology is able to diagnose the foundations or pipework deteriorations caused by corrosion or electrolysis at an early stage, avoiding stringent cost of unforeseen circumstances.

We do the followings on civil works:
  • Civil Construction of Communication sites.

  • RF/BTS Installations, Grades and Microwave.

  • Container Reticulation.

  • Fiber Optic Civil Work.

  • Road Construction and Paving Services.

  • Drainage and storm water systems.

Reticulation, Distribution and  Transmission Systems

In addition to mainstream linework and cable jointing functions, our powerline workers are called on to undertake tasks such as substation installation and maintenance, specialised testing, revenue meter installation and the like. Our powerline personnels are multi-skilled with additional mainstream electrical skills, such as those held by electricians

We do the followings on lines construction work:
  • Surveys; pegging and soil nominations.

  • Foundations excavations; shuttering and casting.

  • Steel work supply, assembly and erection.

  • Supply of line insulators and hardware and installations.

  • Conductor stringing; tensioning and regulation.

  • Testing and commissioning.

Construction  Work

Kokota Holdings (Pty) Ltd will provide your business with stress free complete Turnkey Electrical Works solutions and even to manage your project needs from the concept development phase to final handover. We have the best means and capacity to implement PLCM in a manner adaptable to our client’s environment. We understand that PLCM and PMBOK are designed to meet European standards mainly – however, we will ensure that these systems are well applied optimally to the inclusion of your standards and procedures such as OHS Act 85 of 1993; NEMA; PFMA and other statutory or standard requirements and so forth.

We as Kokota Holdings (Pty) Ltd are not just a business partner but a mutually understanding business friend for business relations that which last life long – hence our interest is mainly customer customer centricity; customer satisfaction and customer delight at the end of any project we do as Kokota Holdings (Pty) Ltd.

We do the followings on substations construction work:
  • System analysis and network studies.

  • Engineering and project management.

  • Major high and medium voltage products such as SwitchGears, Power Transformers, Instrument Transformers, Distribution Transformers; Isolators; CT’s; VT’s etc.

  • Monitoring, control and protection system for electrical scope including SCADA systems.

  • Low voltage and AC/DC equipment, batteries.

  • Power and control cables.

  • Steel structures.

Instrumentation Work

The operation and efficiency of your process plant and equipment is only as good as the instrumentation that controls it. The personnel at Kokota Holdings (Pty) Ltd have the knowledge and capacity to fully implement the right instrumentation systems to suit client application.

We do the followings on Instrumentation work:
  • Complete system design for analogue, digital and "smart" systems.

  • Selection and sizing of instruments and component materials to suit the process environment.

  • Flow systems including magflow, turbine, vortex, pilot tube, variable area.

  • Temperature, pressure, level sensors, transmitters and indicators.

  • Loop powered and separately powered devices.

  • Intrinsically safe (I.S.) and explosion proof (Ex "d").

  • Preparation of P&ID drawings and loop diagrams.

  • Design and commissioning of burner management systems.

  • Configuration, testing and commissioning.

  • Calibration and documentation including instrument databases selection and sizing of instruments and component materials to suit the process environment.

Automation Services

Modern industrial plants utilize sophisticated control systems for automatic and information reporting. Our experienced control system engineers have the necessary expertise to modernize your older plant or build a new system from the ground up and optimise the operational efficiency.

We offer the following on automation :
  • Control System Audit and Risk Assessments.

  • PLC system design, programming, configuration & commissioning. We also do Panel Designs.

  • Preparation of Functional Specifications.

  • Supervisory Control System (SCADA) Configuration and Design.

  • Telemetry System Design And Energy Management Systems.

  • PLC-PLC and PLC-SCADA communication networks.

  • Data Integration with MES, Historian, ERP Databases.

  • As-I, ProfiBus, ProfNET, DeviceNET Implementation, Configuration and Programming.

  • Industrial IT system design and Splicing, testing and installation of Fiber optic cable.

  • Relay programming, wiring and commissioning.

We offer the following Automation Hardware at very competitive prices:
  • Programmable Logic Controllers.

  • Motor Control Switchgear and Standard products.

  • Motor Control centres and Instrument Panels Manufacturing.

  • Wiring and Cabling.

  • Human Machine Interface.

  • Embedded/Industrial PC.

  • Instrumentation.

  • Electrical testing.

  • Radio Frequency Identification Systems.

  • Variable Speed Drives / Soft Starters.

  • Motion Control Hardware.

  • PC Networking Hardware.

  • Telemetry Equipment.

  • Industrial Networking Hardware.

CSP Technology

Concentrated Solar Power (CSP) is used to produce electricity. CSP systems use mirrors or lenses with tracking systems to focus a large area of sunlight onto a small area.

Kokota Holdings (Pty) Ltd is part of innitiative developing CSP systems in Southern Africa. We have partnered with a chines; Italians; Germans and UK manufacturers to ensure success of our projects

We are currently developing CSP technologies in the below regions:
  • RSA - Rustenburg - 110MW Project.

  • RSA - Northern Cape - 69MW Project.

  • ZIMBABWE - 70MW & 80MW Project.

VSD Technology

Variable Speed Drives (VSD) also known as adjustable frequency drives (AFDs) or variable frequency drives (VFDs), are typically used for process control and, lately, more specifically for energy conservation.

VSDs are becoming the most commonly used method for speed control in industry. They control the speed of the induction alternating current (AC) motor to which they are connected, and are the most energy efficient means of controlling the speed of a motor.

VSDs have the ability to vary the voltage (V) and frequency (Hz) simultaneously. Thus, the speed of induction motors can be controlled from 0Hz to 400Hz.

VARIABLE SPEED DRIVES BENEFITS IN PUMPING SYSTEM:
  • Energy Saving by adjustable Head and Flow.

  • Soft start and inrush current control by implementing a ramp setting.

  • Water hammer control and soft stop.

  • High power factor >0.98, no capacitor banks need.

  • Automatic re-start after voltage dips or shutdowns.

Flow(%) Valve Control Power (kW) Power Demand with SD700 VFD (kW) Power Reduction (kW) Energy Saving (%) Cost Saving (R/1000 h)
100% 100 100 - - -
90% 95 72.9 22.1 23% R 30.315
80% 83 51.2 31.8 38% R 40.770
70% 77 34.3 42.7 55% R 60.405
60% 73 21.6 51.4 70% R 70.710
50% 68 12.5 55.5 81% R 80.325
FOLLOW US ON:

Civil Works

Reticulation, Distribution and Transmission

Instrumentation

Construction

Automation

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QR2360 Systems Engineer / Laser Scanning Specialis

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Telephone:

+27 11 222 4444

Mobile:

+27 83 222 4444

Fax:

+27 86 222 4444

Email:

engineering@kokotaholdings.co.za
info@kokota.co.za