Dranetz Power Quality Services

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Dranetz offers a wide variety of services to our customers, both pre and post-sale. As the recognized leader in Power Quality, Demand and Energy instrumentation and monitoring systems, Dranetz proudly offers the following services to our customers:

Complimentary Services

• Local pre-sale support via our worldwide network of authorized sales representatives and distributors.
• Local post-sale support for products purchased via our worldwide network of authorized sales representatives and distributors.
• Technical support via email and phone – available worldwide 12 hours/day (8 a.m. – 8 p.m. EST).
• 1/2 day power monitoring educational seminars are held periodically throughout the USA.

Fee Based Services

Dranetz Product Service and Calibration

• Factory service, calibration and repair of all current and many legacy Dranetz products. Trade-in’s are available for legacy  products that are not serviceable or beyond their useful life.

Extended Warranties

• Extended warranties are available on a per instrument, or a per system basis.

Field Services

Priced per day, plus expenses

• Instrument commissioning and installation support. Note that Dranetz does not perform physical hardware installations - we will assist the installer.
• Instrument, system and software setup to ensure that your product and/or monitoring systems are operating optimally for your application.
• Operational training – we will train your operators on the proper use and configuration of our products and monitoring systems.
• System performance optimization and troubleshooting - provide a health check-up of your monitoring system, diagnose problems and optimize the settings for the best results.
• Group product operational training is held periodically throughout the USA.
• On-site PQ facility investigations, monitoring and reporting – we will diagnose your power quality problem and recommend solutions.**
• Basic and custom PQ training workshops.

Remote Support Services

• Report writing and analysis service – we will remotely analyze the data that you collected on your instrument and provide a report.
• FW upgrades – we will remotely upgrade your instrument or monitoring system.
• System performance optimization and troubleshooting - provide a health check-up of your monitoring system, diagnose problems and optimize the settings for the best results.

Service Contracts

• Tailored to the customer’s specific needs. May include:
• On-site support for system installation, optimization, maintenance, analysis and troubleshooting.
• Repair and calibration.
• Loaner instruments

Engineering Services**

• Laboratory testing of 3rd party products for PQ problem susceptibility.
• Forensic analysis or type testing.

**These services are fulfilled by our sister company Electrotek Concepts

Case Study: Stalled Motors

In this case study, we look at an industrial customer with two 1250 hp motors on a 4kV circuit, whose motors would not start. To determine the problem, we installed a Dranetz PowerGuide 4400 at the motor input. The power monitoring instrument quickly identified the motor itself as the source of the problem. In fact, the motor start caused a deep sag to occur, which impacted the motor control circuitry and stopped the motor from starting. In effect, the motor was "shooting itself in the foot," creating a cycle of non-performance.

The customer was presented with several mitigation options, including adding more capacity to the circuit, installing a constant voltage transformer, or installing an uninterruptible power supply (UPS) system. The customer selected the UPS option, which was installed to protect the motor control circuitry during motor start-up and verified using the PowerGuide 4400.

Inrush currents, such as those associated with motor starting can cause interaction problems with other loads. When motors are started they typically draw 6-10 times their full load, which can cause voltage sags. These events can dim lights, cause contactors to drop out, disrupt sensitive equipment, and as in our case study, affect the successful start of a motor. The use of a power quality monitor that can capture waveforms during long duration start-ups will be quite effective in characterizing and optimizing motor starts.