Square D by Schneider UTS-3 Vital for Effective Secondary Injection Testing

secondary injection test set is a key element in any diagnostic and maintenance program, when it comes to taking care of circuit breakers and relays, as it determines whether the equipment is functioning correctly or is in need of service.

When dealing with sophisticated electrical systems, performance tests such as insulation resistance tests, watts loss tests and electronic tripping function trip tests can be performed to verify that the circuit breaker is able to perform its basic functions.

Square D by Schneider UTS-3 Secondary Injection Test SetThe Square D by Schneider UTS-3 Secondary Injection Test Set is designed to perform operational tests and diagnoses of Square D electronic trip circuit breakers, circuit breaker components and tripping functions.

Each Protec office stocks a full complement of electrical test and measurement equipment.  Offering equipment from all of the premiere manufacturers for rent, lease or purchase, Protec has the electrical testing equipment you need to get the job done.

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Ensure Maximum Efficiency with the Vanguard Auto-Ohm 100 Ampere Micro-Ohmmeter

Due to the high current bus bars and terminal connections carry, their junctions are subjected to high amounts of electrical stress, and this can cause the junctions to corrode and weaken. Sometimes the damage isn't visible and the junction appears to be fine, for that reason it is important to test them to ensure that they are working at maximum efficiency. Regular testing can lead to the early discovery of internal problems, therefore allowing the electrical components to be reconditioned, avoiding future problems.

Vanguard Auto-Ohm 100 Ampere Micro-OhmmeterThe Vanguard Auto-Ohm 100 Ampere Micro-Ohmmeter is a reliable tool for testing the reliability of terminal and bus bar junctions. Able to accurately measure resistance from 1 μΩ up to 300 mΩ, the Vanguard Auto-Ohm 100 Ampere Micro-Ohmmeter uses a Kelvin Bridge input to offset the lead resistance. The Vanguard Auto-Ohm 100 Ampere Micro-Ohmmeter can put out test currents ranging from 10 Amperes up to 100 Amperes, and the unit’s internal memory allows for the storage of the 3 most recent measurements as reference.

Each Protec office stocks a full complement of electrical test and measurement equipment.  Offering equipment from all of the premiere manufacturers for rent, lease or purchase, Protec has the electrical testing equipment you need to get the job done.

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Secondary Injection Test Results You Can Rely on with the Square D S33595 by Schneider

Different from primary injection testing, secondary injection testing is normally conducted when the circuit breaker is closed and not carrying any current through its main poles.

The advantage of secondary injection testing is that the circuit breaker does not have to interrupt large current and only low voltage signals are injected to operate the device.

Secondary injection testing involves disconnection of the protective device from its normal VT/CT and connection to a specialist test set that can inject and measure/record the required operating signal directly into the protective device relay to cause it to operate the circuit breaker.

Square D by Schneider S33595 Secondary Injection Test SetThe Square D S33595 by Schneider Secondary Injection Test Set is a full function test kit that is designed to perform tests on Micrologic, NT and STR Trip units.

Available for rent, lease, or purchase from Protec Equipment Resources.  We are here to help you with your testing equipment needs.

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Full Function Testing with the Square D S33595 Secondary Injection Test Set

Secondary injection testing is normally different to primary injection testing because it is normally conducted when the circuit breaker is closed but is not carrying any current through its main poles.

Secondary injection testing normally involves disconnection of the protective device from its normal VT/CT and connection to a specialist test set that can inject and measure/record the required operating signal directly into the protective device relay to cause it to operate the circuit breaker. The advantage of secondary injection testing is that the circuit breaker does not have to interrupt large current and only low voltage signals are injected to operate the device.

Square D S33595 Secondary Injection Test SetSecondary injection test kits are another piece of electrical test equipment that assists in testing the health of circuit breakers, and the Square D S33595 Secondary Injection Test Set is a full function test kit that is designed to perform tests on Micrologic, NT and STR Trip units.


Protec offers multiple locations to better serve your needs, and rental options that work for you.

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DLRO 10 and DLRO 10X Digital Microhmmeter –Trusted Tools from Megger

DLRO (Digital Low Resistance Ohmmeter) 10 and DLRO 10X are known names in the electrical test equipment industry that can effectively measure low resistance. These automated tools can measure resistance ranging between 0.1 μ Ω and 2000 Ω using appropriate test current equal to 10A D.C.

Anatomy and Working

DLRO 10X is a flexible testing tool that allows its users to control the measuring process as desired. It comes with a 2-axis paddle controlled menu system, which can help in the manual selection of the maximum test current. Also, the test results can be downloaded in real time and stored in the device and transferred to a PC later.

Both DLRO 10 and DLRO 10X come packed in a lightweight yet sturdy case that can be conveniently used in the field as well as in the laboratory. These light devices can even be worn around your neck and used in very small areas.

The DLRO 10 has a bright and large LED display of 4 1/2 -digit while the DLRO 10X comes with a backlit, large LCD display.

Usually, measurements in these devices are carried out using reverse/ forward currents to cancel out the effects of standing voltages, if any, across a test sample. Upon measurement, within 3 seconds, the average value is displayed to a basic precision of 0.2%. The DLRO 10X shows both reverse and forward measurements along with the average value of the two. Also, this testing tool lets you set low and high pass limits, thus allowing go-no-go testing. Upon completion of a test, it will save the test results, along with any notes related to the test.

DLRO 10 and 10X Digital Microhmmeter are powered by NiMH or Nickel Metal Hydride batteries. One advantage is that the battery packs can be interchanged which allows you to recharge one battery while the other is used in continuing the testing process. Normally, complete charging takes around 4 hours, however, the battery can be charged up to 90% within 2.5 hours using the fast charge mode.


There is an industry-wide requirement for precise low resistance measurement tools. Classic applications include carrying out D.C. low resistance measurements of the following:

  • Cable joints and bus bar connections
  • Contact and switch breaker resistance
  • Reliability of welded joints
  • Static control circuits and aircraft frame bonds
  • Resistive component quality control
  • Inter-cell connections or links on battery systems, equaling 600 V peak
  • Motor winding and transformer resistance
  • Graphite electrodes
  • Metal alloys, fuse resistance and welds
  • Lightning conductor and transmitter aerial bonding
  • Cable and wire resistance

Advantages and features

Some of the benefits and characteristics of the two digital microhmmeters include:

  • Lightweight, small, and handy – Using these devices, testing can be carried out in tight places. This avoids the need for two person operation and extra long leads.
  • 4 terminal resistance method calculates the real resistance of the item being tested.
  • LCD (DLRO 10X) and Bright LED (DLRO 10) displays are clearly visible under any sort of lighting condition, which reduces human error.
  • Automatically applies reverse and forward currents which annul any standing voltages in the sample being tested.
  • Checks for excessive noise during resistance measurement, which reduces the risk of recording any inaccurate result.

Measurement modes:

There are several measurement modes available, both on the DLRO 10 and DLRO 10X. With version V2.0 firmware  the following modes are active on the 2 devices:

  • Normal mode
  • Continuous mode
  • Auto mode
  • Inductive mode
  • Unidirectional mode

 We offer electrical test equipment rental services and offer Megger digital low resistance ohmmeter for rent at a nominal charge. 

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Electrical Test Equipment for Circuit Breaker Test

With rapid industrial development, the dependence on electrical devices and systems has increased exponentially. It is critical that electrical system providers maintain their system reliability for consistent operation. Circuit breakers are one of the critical pieces used as a safety and protective device that are required to be maintained for reliability of the system's operation.

The maintenance of these circuit breakers requires regular, organized, and accurate testing with high quality and sophisticated electrical test equipment like Megger test equipment. Efficient testing also requires the device to compare the current circuit breaker test results with the results of previously conducted tests. This condition makes it necessary to conduct the tests in exactly in the same method as conducted earlier. This will facilitate comparison between the tests and make it possible to detect the deviations and changes if any. Presence of any deviation from the earlier test results will indicate whether the circuit breakers need to have maintenance performed or the unit replaced prior to continuing operation.

A good quality, reliable, and accurate testing procedure will include analysis of the results and comprehensive reporting. It should be possible to authenticate the accuracy of the results of the test conducted and then conveniently compare them with earlier test results. This will make sure that the circuit breakers are in the right working condition. This test equipment can be purchased or rented from our electrical test equipment rental company.


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DLRO Test for Circuit Breakers

With the continuous evolution in all industries, everything has become more dependent on electrical devices and systems. This increasing dependence calls for certain steps to ensure reliable and consistent functioning of the devices. This is why most companies carry out regular testing and diagnosis of electrical devices and systems using high quality, efficient, and reliable electrical test equipment.

A circuit breaker is an important component of the electrical system which is used to break off the current in case of any fault. If the circuit breaker develops a fault because of a mechanical problem, the entire system can suffer severe damage on occurrence of an overload. Thus, regular diagnosis of circuit breakers is very important.

After several usage cycles, the circuit breaker contacts may carbonize due to inductive kickbacks from resets. Although most circuit breakers are loaded with features that suppress such kickbacks, that may not be sufficient. The amount of carbon deposit on the contacts can be estimated by measuring the resistance offered by it. DLRO test can be used to check the low resistance readings. The other electrical and mechanical problems can be diagnosed by using a circuit breaker test kit.

You can get electrical test equipment rental services from us at economical prices. Just call us and we’ll help you out.


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Circuit Breaker Timer: An Electrical Test Equipment Add On

A circuit breaker timer is a device that is mostly used in conjunction with other circuit breaker test sets for diagnostic analysis of the circuit breakers. The circuit breaker timer is used as a simulation device to imitate the conditions of overload to measure different parameters or modes which include stroke, velocity, and contact times.

Circuit breaker test equipment is used for comprehensive and accurate testing which makes sure that the breakers function properly when exposed to a high magnitude of current passing through the circuit. Circuit breakers perform the task of breaking the current circuit in case of current overload. If the circuit breaker doesn’t perform properly, the high current may damage one cable, whole wiring, or the entire device. This calls for preventive measure in the form of regular testing of circuit breakers.

Secondary injection test kit is another piece of electrical test equipment that helps in testing the health of circuit breakers but doesn’t involve passage of large currents. Rather, low voltages are used for this purpose. No matter what the mode of testing is, it is necessary to carry out preventive testing and diagnosis of circuit breakers to ensure absence of critical issues and the nagging fear of expensive electrical device failure.


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An Overview of Megger Electrical Test Equipment

Megger is a leading brand of electrical testing tools.  Megger test equipment is reliable and sturdy, and delivers accurate results every time. Megger instruments are structured to detect the minutest of electrical flux and have dominated the industry for over 100 years.  Although circuit breaker tests were a Megger specialty, they have evolved as a one-stop destination for all electrical measuring and testing gear. They have a strong global presence with worldwide manufacturing centers, sales representative, and multilingual product literature, and have earned the famed ISO 9001 certification.

Among the most popular Megger devices is the much-in-use Megger meter. It is a device which checks insulation and electric charge leakage. These meters are used to detect the possibility of short circuits. A high voltage DC is applied to the electrical device and its resistance is checked via the meter. A resistance of 1.25 mega ohms and upwards is considered an excellent value while a flat reading hints at leakage.

Electrical test equipment from Megger undergoes rigorous performance checks to meet high international standards and are the most talked about equipment testers available today. Megger is the proud winner of international environmental standard certificate, ISO 14001, and is the premium electrical device testing company in the world.  


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DC Tests for Circuit Breakers

We use circuit breakers everywhere – at our homes, offices, and electric facilities. These little instruments are easily prone to break down frequently as they gather moisture, contaminants, and dirt while they’re in use. Moreover their insulation can also become weak because of the heat that is created due to arc interruption if it is not maintained regularly. Chemicals like hydrogen sulphide or chlorine can be major factors in the damage and corrosion of insulation as well as metal components of circuit breakers. This is why you need electrical test equipment to make sure everything is working perfectly.

Circuit breakers play a very important role in protecting your equipment and should be constantly checked for damage. Listed below are some DC tests that can be performed to determine the efficiency and reliable performance of these breakers. These tests have been recommended by NETA – International Electrical Testing Association.

  1. For examining the insulation systems of the breaker, DC over potential test is performed
  2. For testing resistance of insulation of its control wiring
  3. For testing resistance of path of the current, contact resistance test is performed

Insulation Systems
A very vital area that should be constantly tested and evaluated is the isolation system of the breaker. If the insulation is weak, it could wreak havoc during the process of arc interruption.  Control wiring of the breaker should also be regularly tested. If a wire is short, it can stop the functioning of the motor for spring charging or the device for overcurrent protection. If these breakers have been in use for a long time, the factory lubrication may get dried out resulting in the seizure or binding of circuit breaker. These are some of the major issues that plague circuit breakers which have been used without proper care. There are two main components that comprise the insulation systems:

  1. Vacuum bottles or Arc chutes
  2. Pole units and blackboard assemblies

Arc chutes play a vital role in extinguishing the arc. They must first stretch and then cool, and the arc must be contained even when short circuits occur. A defect in this component of insulation system may be the result of a restrike where the arc again gets established. When this happens, the breaker fails to clear this fault, and the device that is next must start operating. Pole units and blackboard assembly provide support to their arc chutes as well the components that are responsible for carrying current. The insulation on these systems can degrade with use, or arc tracking may result in carbon accumulation. Physical conditions can be especially detrimental to the insulation system. Make sure you get high quality devices like Doble or Megger test equipment.

The three very common DC testing methods are explained in detail below.

DC Overpotential Test
This is a standard test that has been recommended by NETA MTS – 2011. A very high DC voltage is placed across the insulation system of the breaker. The insulation system gets stressed and as a result it becomes possible to detect weak insulation, moisture, and dirt. A megohmmeter with a rating of 2500 Volt can be utilized for performing this test on breakers with low voltage. For breakers which have medium voltage rating you will require a test set that has higher potential.

Basically when an overpotential test is being performed, there is no fixed value that can be utilized for evaluating the insulation. If you are unable to find faults or failure in the device insulation during this test, breaker is considered to be serviceable.

Arc chutes are replaced by vacuum bottles in vacuum circuit breakers. These vacuum bottles utilize partial vacuum for interrupting the arc as there cannot be an arc in perfect vacuum. But since it’s not possible to create perfect vacuum, minor arcs are produced within the bottles. If the bottle’s integrity has not been compromised, the arc is interrupted quickly. But leakage can occur and vacuum can get relieved if the metal bellows develop leakage. Metal flexing during the opening and closing of the breaker can crack the bellows. You can test a vacuum breaker in a manner similar to that that of air- magnetic circuit breakers with the help of a DC hipot. But make sure that you use the correct DC testing set otherwise your bottle may get irreversibly damaged. For testing integrity of vacuum bottles you can also use an AC hipot.

Insulation Resistance Test
Major defects can be found by conducting insulation tests on primary insulation on medium and breakers with low voltage. If you wish to detect moisture, deterioration, and tracking, you should use an AC power factor test or DC Overpotential test.  It is recommended to test the control wiring, potential transformers, and current transformers along with the safety check while using the breaker for HV diagnostics. This is done by insulation resistance test. You should check the insulation resistance for all the control wiring. The insulation resistance must be measured from wiring to the ground, which will be the chassis or the frame on a circuit breaker.

Do not apply high voltage to the overcurrent devices or the spring charging motor while testing controls wiring and ensures that the circuit or device being tested is isolated.

Micro-Ohmmeter or Contact Resistance Test
To continuously carry the load current and to interrupt the fault current of the breaker when needed, contact and supporting structures are provided. For reliable functioning stabs, contacts and structure for carrying current should have low resistance. With increasing resistance, the loss due to heat that is created when current passes through the resistance also increases. Poor condition of contact or improper lubrication can be a cause for increased resistance in the path of current.

There may be many surfaces that carry current, and they should be properly lubricated. A contact resistance testing is done to check condition of point of pivot between stationary and moving contacts. Initially, the pivot comes lubricated but this lubricant starts drying with use. Resistance of the pivot also increases resulting in heat loss which accelerates the depletion of the lubricant. The depletion of the lubrication can ultimately result in breakdown of the circuit breaker.

Micro-ohmmeters are used for conducting these tests. DC current is applied through closed current path of breaker and contact resistance in the unit micro-ohms is displayed on the test set.

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A Brief Snapshot of Megger Electrical Test Equipment

Megger is a big name in the electrical test equipment industry and manufactures a full line of devices that are employed by testing service companies, industrial operations, and electric utilities. These testing units are used for analysis and maintenance of many devices like circuit breakers, transformers, cable, batteries, watthour meters, and relays to ensure safe operation of the vital components of any electrical system. For detailed information on various test units, you can contact us at 1-866-352-5550 or 972.352.5550, and our engineers will help you out.

Megger digital low resistance ohmmeter can measure resistance as low as 0.1 micro ohms and is easy to operate. Digital micro ohmmeters measure the contact resistance of aircraft frame bonds, circuit breakers, switches, pipeline, and rail bonds etc. The company is a brand leader in making low resistance ohmmeters.

Megger has many models for testing resistance and makes use of test currents from 200-0.5 mA, thereby covering a full range of applications which require accurate low resistance measurements. If you are in dire need of a Megger meter, but are not in a position to buy it, you can it for rent. Protec Equipment Services offers electrical test equipment of all leading brands, including Megger and Doble.

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Thorough Testing of Circuit Breakers

It is important to regularly check the condition of circuit breakers. They may look fine and are operating well. However, some might be at the brink of failure. Failure could cause serious problems in your electrical system. If one of the circuit breakers fails and a power fault occurs, the electrical system and the equipment attached may be seriously damaged. This may result in high repair costs and interruption of electrical service.

The ANSI/NETA MTS-2011 or the Standard for Maintenance Testing Specifications for Electrical Power Distribution Equipment and Systems guides technicians on what testing method to conduct and the expected values during a test. Below are the recommended DC electrical tests by the InterNational Electrical Testing Association (NETA).

1. Contact Resistance Test

This diagnostic method measures the circuit breaker's contact resistance. There are times that circuit breaker contacts develop carbon deposits, pitting or corrosion. This may introduce serial resistance which reduces the current flowing through the contacts. This may result in localized Ohmic heating and eventual failure. Also, one of the reasons to conduct a contact resistance test is to determine the condition of the pivot point between the stationary and moving contacts.

2. Insulation Resistance Testing

The insulation resistance helps technicians find gross defects on the circuit breaker's insulation system. However, pinpoint problems like tracking, moisture buildup and insulation degradation, an overpotential test is needed.

3. DC Overpotential Testing

The overpotential test is one of the diagnostic methods recommended by the ANSI/NETA MTS-2011. This test is conducted by applying a high DC voltage across the insulation system of the circuit breaker being tested. This helps determine if the insulation is still within the manufacturer's specifications. 

Circuit Breaker Insulation Systems

Below are the two main insulating components of circuit breakers.

Vacuum Bottles or Arc Chutes

The arc chute is one of the important components in a circuit breaker. The arc chute extinguishes the arc during in case of a power fault. Arc chutes must stretch and contain the arc. If the arc chute is faulty, a restrike may occur where the arc reestablishes itself. When this happens, the circuit breaker may not be able to clear the fault and the next upstream component has to clear the fault.

Backboard Assembly for Low Voltage Breakers and Pole Units for Medium Voltage Breakers

These components are used as support for the arc chutes and the power carrying components of the circuit breakers. The insulation of these components degrade and form carbon tracking due to arc interruption.

Protec Equipment Resources offers various options for you to acquire the needed electrical test equipment for maintenance and troubleshooting. Choose to rent, lease or purchase an insulation tester, circuit breaker test set or other testers you need. We have offices strategically located across the United States to ensure you get the equipment you need on time. Please call a representative today at 1-866-352-5550 for assistance.

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What is a Secondary Injection Test Kit

The most typical protective devices installed are overload, over current, reverse power, earth fault, differential proportion etc. Injection tests are carried out to check the operation of these protective relays and the breakers. There are two types of injection tests that are normally conducted – primary injection test and secondary injection test. Primary injection test is conducted by injecting the current that is required for the operation of the protective device power through a circuit breaker. The secondary injection test, on the other hand, is conducted when the circuit breaker, though closed is not carrying any current through the main poles.

In secondary injection tests, the protective relay is first disconnected from its normal voltage or current terminal, and is connected to a secondary injection test unit that is capable of injecting as well as recording the operating signal. This signal is fed directly into the protective device or relay to cause the subsequent operation of the circuit breaker.

Secondary injection tests are generally preferred as there is no need for the circuit breaker to interrupt large current and only voltage signals that are sufficiently low are injected into the device.

To get the electrical test equipment called the secondary injection test kit, you can contact us and talk to our experts. We provide all electrical test equipment rental and retail services.

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Consider Secondary Injection Test Set for Your Breaker Testing

Taking care of circuit breakers and relays is a must when dealing with sophisticated electrical systems. The secondary injection test set is a key element in any diagnostic and maintenance program as it determines whether breakers are functioning correctly or need service.

We carry many fine secondary injection test kits from reputable manufacturers, and most companies will want to consider including these instruments as part of their necessary test and measurement equipment inventory. Our models include:

Merlin Gerin 685836A -  simplifies the process of flexible testing of ST and CM trip systems.

Siemens PTS3 - portable testing set designed especially for type LA circuit breakers including static trip, static trip II and LimiTrip models.

Square D UTS3 - a universal testing kit for MicroLogic UTS-3 trip systems.

Cutler Hammer 7801C57 - hand held portable unit made for testing Digitrip OPTIM systems.

ABB 505 - this secondary injection tester is suitable for type LSS solid state trip devices.

Whether insulation test, circuit breaker or power analysis, we have the model you need ready and available for short or long term rental. Our friendly support staff is available 24 hours a day, 7 days a week to help you select the best equipment for your project needs. Give us a call at (866) 352-5550 today to learn more.

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Testing LSS Power Shield Trip Units and LK Circuit Breakers with the ABB 505 Secondary Injection Test Set

Circuit breakers protect the electrical system from damage by cutting off electricity in an event of overload. With their crucial role, they must be well maintained. Regular checks should be conducted to check contacts, sensing and other control electronics. There are instances that a circuit breaker doesn't show any symptoms until it's too late. 

The ABB 505 Secondary Injection Test Set is a suitable device for circuit breaker maintenance and troubleshooting. This tester allows you to conduct tests on LK-800, 1600, 2500, 3200 and 4200 circuit breakers and LSS Power Shield Solid State Trip Devices. Some of the features include:

  • Allows instantaneous, long-time and short-time trip functions
  • Built-in ammeter function
  • Lets you test the functionality power supply and signal sensors
  • Has a built-in timer for measuring the fault-current persistence
  • Comes with the following accessories
    • Manual
    • Power cable
    • Female and male cable assembly

You can get the ABB 505 test set from Protec Equipment Resources. Rent, buy or lease. It's up to you! We also carry an assortment of electrical test equipment to cater to your testing needs. Call us at 1-866-352-5550 for a quote.

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Top 3 Posts about the Secondary Injection Test Kit

The secondary injection test kit provides users with the means to perform circuit breaker and protective relay testing. By checking these vital components, companies ensure that they are operating effectively and not subject to potential failure, which can be very costly to repair, result in company down time and even possibly risk worker safety.

Our blog offers many informative posts about how to choose a secondary injection test set along with additional data about various test and measurement equipment models we have available through our rental and purchase programs. The following posts are just a few of our reader favorites about this vital electrical test equipment:

Low Voltage Circuit Breaker Testing – written by our resident expert, Thomas Sandri, this article discusses various methods of primary and secondary testing.

Secondary Injection Test for Circuit Breakers – this favorite post reviews the need for circuit breaker testing and the proper equipment to safely conduct these tests.

ABB Kits for Testing Needs – this post suggests various models manufactured by ABB for testing protective devices.

Protec is committed to educating our customers about the value of test and measurement equipment rental and how our program helps save your company money on the expense of cleaning, calibrating and maintaining test equipment. Contact us today to learn more about renting test equipment for your project needs.

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Upcoming Events by Megger Test Equipment

Staying up-to-date with the latest technology and testing methods requires diligence when it comes to manufacturer sponsored events. Many leading test and measurement equipment makers participate in educational and trade association exhibits that provide education and networking for electrical contractors, testing companies, solar and wind operations as well as power distribution and generation companies.

For the remainder of 2012 Megger Test Equipment will be participating in many of these educational events, and there’s still time to attend or send your staff to these informative conferences and shows:

  • Solar Power International – at the Orange County Convention Center in Orlando, Florida from September 10th to 13th. Features exhibits, education and networking for solar energy professionals.
  • Substation & Testing Best Practices Seminar by Megger at the Crowne Plaza in Dallas, Texas on September 11th.
  • 45th Annual Transmission & Substation Symposium – at the Crowne Plaza in Dallas, Texas from September 12th to 14th. Conference provides educational and networking for those interested in design and development of transmission and substations.
  • Railway Interchange 2012 – at the Sheraton Hotel in Chicago, Illinois from September 23rd to 25th. Learn about new rail industry technologies and products as well as networking opportunities and education.
  • NECA Convention – at Mandalay Bay, Las Vegas from September 29th to October 2nd. This informative conference offers electrical safety information, latest innovation & trends, best practices workshops, networking and new markets.
  • Finepoint Conferenceat the Omni William Penn Hotel in Pittsburgh, Pennsylvania from October 1st to 5th. Features training for circuit breaker testing and maintenance along with manufacturer and supplier product exhibits.
  • Best Practice Circuit Breaker & Transformer Seminar by Megger – in Pittsburgh, Pennsylvania on October 1st.
  • SCTE Cable Tec Expo – at the Orange County Convention Center in Orlando, Florida on October 17th to 19th. Hosted by the Society of Cable Telecommunications Engineers, this exhibition offers opportunities to contact engineers, techs and decision makers within the industry along with networking opportunities, brand building, new products and technology.
  • OSP Expo – at the Colorado Convention Center in Denver, Colorado on November 13th to 15th. This event offers accredited educational seminars, keynote speakers, exhibits and live interviews.

These educational events promise to bring a wealth of information to professionals, engineers and technicians seeking the latest in technological advances and education. When it’s time for testing, visit our online catalog or contact our support specialist to learn more about our electrical test equipment rental programs specially designed to meet your project needs.

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Keeping Systems Operational with Secondary Injection Test Kit

Routine diagnostic testing of circuit breakers ensures that these vital systems remain operational. When a circuit breaker doesn’t trip due to a fault situation, worker safety and equipment integrity is at risk. Furthermore, without proper maintenance, these components can create complete system failure, which ultimately results in loss of money due to business interruption as well as costly repairs.

Using a secondary injection test kit such as the Merlin Gerin ME Test Set ensures that systems may be properly tested and stays in operation for much longer than those not tested at all. This versatile and flexible test and measurement equipment offers short time, long time and instantaneous trip testing as well as ground fault protection tests for multiple relays including:

  • Masterpact Circuit Breakers: STR18-STR58 and ST208-ST418 trip units
  • Compact Circuit Breakers:  STR25-STR55, STCM2 & STCM3, ST204-ST224 and ST205-ST315 trip units
  • Compact NS Circuit Breakers: STR22, STR23, STR22ME, STR43 and STR53 trip units

No matter what type of equipment you need, rent test equipment from Protec using our rental or lease program, which offers affordable testing equipment designed to suit your project needs. Give us a call at (866) 352-5550 to learn more about same day shipping, free calibration and superior service unparalleled in the industry.

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Electrical Test Equipment for Every Toolbox

Without proper electrical testing and measurement of power systems, this vital equipment may not protect worker safety or operate to its fullest potential. Having the right electrical test equipment becomes very important to maintaining these systems and keeping them operational for a longer period of time. Examples of standard equipment that should be part of every toolbox are digital multimeters and megohmmeters.

Digital multimeters provide onsite and accurate readings for various systems including voltage, fault detection, current and resistance. As handheld or smaller sized box devices, these instruments are ideal for field work, and their large displays allow for easy reading of test results. Both the Fluke and Megger meter provide the kind of durable and rugged test and measurement equipment that companies need to perform reliable testing. The Megger PMM1 power multimeter is an excellent example of this class of test equipment.

For circuit breaker testing, the megohmmeter goes a step further and tests high voltage electrical resistance usually on wire and winding insulation. While performing preventative maintenance and trouble shooting, these units generate high levels of voltage to ensure accurate detection of any defects. We offer Metrel and Megger test equipment to reliably perform insulation testing.

Protec offers a whole line of electrical testing equipment through our short and long term rental program. Whether you need it for a day, week or month, we have an affordable plan to meet your needs. Give us a call today to learn more (972) 352-5550.

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Try Cutler Hammer for Secondary Injection Test Kit

For checking circuit breaker and protective relay systems, the secondary injection test set is the main piece of electrical test equipment for companies to use. It differs from the standard primary injection testing method in that there is no current flowing and contacts remain closed during the testing process.

Because trip units serve a critical role in electrical systems, companies must actively test them to prevent electrical faults from causing equipment failure or accidents. Secondary injection tests pinpoint any defects in the trip unit or other protective systems ensuring that systems are functioning normally.

The Cutler Hammer 7801C57 secondary injection test kit comes with everything you need for accurate and reliable testing. Their patented OPTIM trip unit system allows for easy plug-in right in front of trip units and is powered by a single 9 volt battery. The large display provides custom configuration so that users can change the time current set point, protective option and level of alarm. Results display with phase & ground as well as trip or no trip data. The supplied Ethernet cable allows for instead download to computer so that users may perform further data analysis. This test set is hand held so the unit allows for quick portability for jobs out in the field or lab.

The secondary injection testing set for Seltronic and Digitrip 310 trip units is the Cutler Hammer G10 while the available system for Seltronic and Series C circuit breaker testing is the model 123C50G05 system. Our magnum trip unit testing kit is model MTK1000. An additional auxiliary power supply module is also available for the Cutler Hammer Digitrip Trip Units.

Cutler Hammer is no stranger to the electrical equipment industry. Getting its start in 1893 with electric starters and regulators, the company was the first to patent the automatic motorized starter in 1900. This background eventually led to the creation of what we know today as the motor control industry. In the 1930s, the company also patented 28 different uses for current control vacuum tubes. Today, Cutler Hammer is part of Eaton Corporation and brings an entire line of switching and power control devices to the general public and electrical trade.

Protec offers these Cutler Hammer sets along with a complete line of secondary injection testers from ABB, GE, Merlin Gerin, Satin American Siemens, Square D and Westinghouse. Find out more about our available testing and measurement equipment by visiting our online catalog or giving our support specialists a call at (972) 352-5550.

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