The universal solution for testing all generations of protection relays and schemes: Electromechanical Relays to modern IEDs according to IEC 61850 *Run fully automated steady-state, dynamic, and transient simulation tests on your relays and protection schemes* Doble protection diagnostic instruments are compact, rugged, field-portable devices used worldwide by test engineers to diagnose and calibrate electromechanical and numerical schemes. The instruments are designed to provide fully automated steady-state, dynamic, and transient testing capability, in the field as well as in a laboratory. | | | |
DOBLE - F6150 Power System Simulator
| | | F6150 Power System Simulator The F6150 Power System Simulator uses state-of-the-art digital signal processing and power amplifiers to deliver a high power, lightweight instrument for all protection testing applications. The total test solution for protection schemes ...more
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| Doble has created a variety of online devices to manage the state of your bushings/CTs, transformers, circuit breakers, and other apparatus. | | | |
DOBLE - Intelligent Diagnostic Devices (IDDs)
| | | Intelligent Diagnostic Devices (IDDs) Application: Transformers / Circuit Breakers Intelligent Diagnostic Devices (IDDs), a family of continuous online diagnostic devices for power system apparatus, are designed to detect incipient problems with bushings/CTs, transformers, and circuit breakers. Now you can safely manage progressive problems and efficiently schedule corrective action. There are three types of IDD instruments: Moisture, Bushings, and Dissolved Gas Analysis ...more <<details>> | | | |
DOBLE - Insulator Pollution Monitor
| | | Insulator Pollution Monitor ( IPM ) IPM is designed to perform continuous online monitoring of external pollution effects on high-voltage insulators and other insulator housings, such as surge arresters and bushings. By measuring the surface leakage current of the insulators, IPM can classify the severity of the pollution. You can use this information to make decisions on insulator maintenance ...more <<details>> | | | |
DOBLE - Leakage Current Monitor
| | | LCM 500 Leakage Current Monitor The Leakage Current Monitor (LCM) measures the resistive component of continuous leakage current in gapless metal oxide surge arresters (MOSAs). Increased resistive leakage current indicates a higher risk of MOSA breakdown ...more <<details>> |
| Doble's Insulation Analysis equipment offers the world's most advanced testing for power apparatus. | | | |
DOBLE - M4100 Insulation Analyzer
| | | M4100 Insulation Analyzer Diagnostic test system for power apparatus condition assessment. The world's most advanced test system for power apparatus diagnostics ...more <<details>> |
Detect Hidden Transformer Faults Using Sweep Frequency Response Analysis Sweep Frequency Response Analysis (SFRA) is a major advance in transformer condition analysis, allowing you to "see" inside transformers and detect even subtle changes in the mechanical structure of the core and windings - without costly detanking. The standard definition of Frequency Response Analysis (SFRA) is the ratio of a steady sinusoidal output from a test object subjected to a steady sinusoidal input. Sweeping through the frequency range of interest gives rise to the S in SFRA, to distinguish it from impulse methods, which estimate the response rather than measure it. Sweep Frequency Response Analysis (SFRA) is a proven technique for making accurate and repeatable measurements on a transformer. As compared to the "impulse" technique, SFRA is preferred for frequency domain measurements. It covers the full dynamic range and maintains the same energy level for each frequency, providing accurate, consistent results. A high signal-to-noise ratio across the entire 20 Hz to 2 MHz frequency range ensures valid measurements. The DOBLE instruments M5400 and M5300 send an excitation signal into the transformer and measure the returning signals. Comparing this response to baseline and other results (such as from similar units) allows you to identify deviations and confirm internal mechanical problems, such as: - Core movement
- Winding deformation and displacement
- Faulty core grounds
- Partial winding collapse
- Hoop buckling
- Broken or loosened clamping structures
- Shorted turns and open windings
Add the DOBLE M5400 or M5300 Sweep Frequency Response Analyzer to your quality-control and maintenance toolkit, as these instruments are the most effective diagnostics tools on the market for detecting mechanical problems in your power transformer! | | | |
DOBLE - M5300 Sweep Frequency Response Analyzer
| | | M5300 Sweep Frequency Response Analyzer The M5300 Sweep Frequency Response Analyzer performs the same functions as the M5400, but the M5300 has a built-in PC and visual display and comes with a Laptop keyboard. Detect hidden transformer faults using sweep frequency response analysis (SFRA) ...more <<details>> |
Doble's circuit breaker diagnostic products allow you to test simple and complex circuit breakers using a single field-portable instrument and Windows-based software. Doble offers the following circuit breaker instruments, which are backed by more than 25 years of diagnostic experience in the analysis of circuit breakers | | | |
DOBLE - TDR100 Circuit Breaker Diagnostic Instrument
| | | TDR100 Circuit Breaker Diagnostic Instrument
The TDR900 is a state-of-the-art Circuit Breaker Test System engineered to test all types of circuit breakers. The TDR900 provides efficient and accurate performance measurements for circuit breakers. It performs timing functions for up to four breaks per phase with motion measurements. Ensure simple, accurate, efficient timing for circuit breakers ...more <<details>> | | | |
DOBLE - TDR900 Circuit Breaker Test System
| | | TDR900 Circuit Breaker Test System
The TDR100 Circuit Breaker Test System is a simple, effective way to assess the condition of circuit breakers and switching devices. The TDR100 is a compact unit that provides quick and reliable results. Perform timing functions for up to 4 breaks per phase with motion ...more <<details>> |
What is the Partial Discharge Phenomena? Partial Discharges (PD) are evidences of a degrading insulation capacity, which will lead to cost-intensive repairs and can predictively lead to an electrical breakdown of the HV apparatus. Partial Discharges are mainly caused by natural circumstances or by accelerated aging of the HV insulation. But also manufacturing or installation failures can lead to harmful partial discharges. Therefore, the goal of partial discharge measurements is to detect the partial discharges in an early stage and to evaluate them in a proper way. Thus, periodic (as well as permanent) partial discharge measurements have become one of the main criteria in assessing the quality and condition of HV equipement such as transformers, generators, switchgears and cable systems. Our Measuring Devices - Our Solution - Your Benefit Based on many years of research and development, the Doble-Lemke Group offers various state-of-the-art partial discharge measuring devices and systems. Our highly sophisticated measuring instruments and systems, either on digital or analogue basis, allow partial discharge measurements according to national and international standards such as DIN EN IEC 60270, DIN EN IEC 62478 (pending), DIN VDE 0434, various IEEE standards as well as other standards of the High Voltage Test and Measurement Technology. Avoid costly repair work and and long-term breakdown of your HV apparatus
- Rely on partial discharge measurements for condition assessment of your transformer, generator, cable system or switchgear! | | | |
DOBLE - LDS-6
| | | LDS-6/UHF For over 10 years, the digital and portable PD measuring and diagnosis device LDS-6 accompany thousands of users around the world. With the help of the various plug-in's, the LDS-6 allows also narrow-band, RIV and UHF partial discharge measurements, besides conventional PD measurements. Portable PD Analyzing System LDS-6/UHF for PD measurements and monitoring on GIS or Cable Systems ...more <<details>> | | | |
DOBLE - PDS-100
| | | PDS-100 The Partial Discharge Surveyor PDS100 provides complete substation PD survey capabilites. By simply walking around the HV apparatus, sources of partial discharges and external intereference can be detected and identified. Routine RFI surveying will assist in locating partial discharge activity while the apparatus is still in service ...more <<details>> | | | |
DOBLE - PD-Smart
| | | PD-Smart Digital, highly advanced, multi-purpose and smart Partial Discharge and Diagnostics System for on-line and off-line PD testing on power apparatus and high voltage insulation systems, for both in-house and on-site applications ...more <<details>> |
Recognize long-term trends with Partial Discharge Monitoring Partial Discharge Monitoring ("PD Monitoring") describes the measurement and recording of partial discharges over a longer period. PD Monitoring is done during normal operation conditions, this means online permanent PD measurements will be carried out. Partial discharge monitoring allows long time trending of partial discharge events, rather than only at a flash point during a periodic test. Hence, with partial discharge monitoring, a change in the insulation system of your HV equipment can be recognized in an early stage. From time-based to condition-based asset management Condition based maintenance as well as asset management strategies, realized via partial discharge monitoring, are particulary relevant for power apparatus that are located at critical points of the power generation and transmission grid. Partial discharge monitoring will increase the availability as well as the operating safety of your HV equipment and allows the timely planning of outages. Our Measuring Devices - Our Solution - Your Benefit Our product range includes innovative digital partial discharge monitoring systems, that can be easily integrated into utility control and SCADA systems. Furthermore, for PD monitoring permanent sensors have to be installed at the HV equipment, both standard as well as customized sensors are offered. Due to the permanent installation of PD monitoring systems on-site, many filter and noise suppression features are implemented. The partial discharge monitoring systems are scaleable and remote controlled. Highly sophisticated software simplifies the evaluation of the data for the end-user. Moreover, an intelligent database allows the meaningful assessment and analysis of relevant data. User defined alarm conditions, combined with a plenty of analysis tools, facilitate decisions for appropriate electronic counter measures. | | | | MachineGuard PD Monitoring System
Doble offers a complete solution for monitoring Partial Discharge on rotating machines. The system includes the Doble PD-Guard, couplers, calibrators, interference rejection sensors, and all necessary connectors. Of course, the system comes with Doble’s world class support. Click Here for the MachineGuard Brochure
DOBLE - Machine Guard
IEC
Why is MachineGuard simply the most advanced PD monitoring system? Click here to check out the spec! | | | |
DOBLE - FailSafe
| | | FailSafe LF & Capacitive Couplers Doble offers a variety of capacitive couplers that allow for decoupling of PD signals from various electrical sources. Featured is the FailSafe LF Coupler. This coupler allows for continuous online monitoring of rotating machines at lower frequencies than traditional HF couplers. Lower frequencies allow for the whole stator to be monitored, not just the first few coils. In addition, the unit does not compromise the reliability of the system by incorporating a fused element that safely removes the coupler in the event of a failure.
| | | | TransformerGuard PD Monitoring System
TransformerGuard is a solution for monitoring PD activity in transformers. It is equipped with a PD-Guard/UHF that allows for the connection of various UHF sensors that can be either mounted through tank hatches or inserted through an oil drain valve. UHF technology allows for detection of PD activity deep within transformer windings without attenuation. Doble’s experts will assist you in analysis. Click Here for the TransformerGuard Brochure
DOBLE - Transformer Guard
| | | | TerminationGuard PD Monitoring System
TerminationGuard is a condition based monitoring system for assessing the condition by cable terminations in the field. Once installed in the field, the most likely place for a cable to fail is either at splices or terminations. TerminationGuard targets the terminations and can reliably assess their condition by using the latest in UHF PD based technology. By monitoring the in-service partial discharge, the insulation performance can be monitored over time and corrective action can be taken before a failure occurs. Click Here for the TerminationGuard Brochure
DOBLE - Termination Guard
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DOBLE - PD-Guard
| | | PD-Guard and PD-Guard/UHF
The PD monitoring system PD GUARD is especially developed for continuous partial discharge monitoring of high voltage equipment, like generators, motors and power transformers in the conventional frequency range ...more <<details>> |
| Doble developed one of the first analytical techniques for measuring dissolved water in oil, as well as the DOMINO Ultimate Sampling System (USS) and the Moisture-in-Oil (MIO) sensor. You can use these instruments to manage the state of your bushings/CTs, transformers, and circuit breakers. | | | |
DOBLE - DOMINO USS
| | | DOMINO USS DOMINO USS gives you a fast, convenient way to measure water content in oil while you're performing other field tests. The MIO sensor is a simple, accurate, robust device that measures moisture in oil in terms of ppm and relative saturation, along with temperature. It allows continuous, reliable measurement of the water content of electrical insulating liquids and other types of oils ...more <<details>> | | | |
DOBLE - DOMINO Permanent-Mount Sensors
| | | DOMINO Permanent-Mount Sensors The DOMINO sensor measures moisture in oil in terms of ppm and relative saturation (RS), as well as temperature. It provides continuous, reliable measurement of the water content of electrical insulating liquids and other types of oils ...more <<details>> |
| In addition to high-end (partial discharge) measuring devices, Doble-Lemke offers a wide range of accessories for PD measurements. | | | |
DOBLE - PD Sensor
| | | PD Sensor Type A Application: HV Cable Terminations Inductive Line coupler PD Sensor (ungrounded) Type A with capacitor (molded) for HV cable ...more <<details>> |
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