Doble Engineering
Founded in 1920, Doble Engineering Company ensures reliable, safe and secure power for all. We do this by providing comprehensive diagnostics and engineering expertise for the energy industry. Doble is part of the Utility Solutions Group of ESCO Technologies Inc. (NYSE: ESE) and serves customers around the globe. Doble is an ISO 9001 & ISO/IEC 17025 & 17034 certified company.
- (617) 926-4900
- 123 Felton Street
Marlborough, MA 01752
United States of America
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Product
Compensating Reactor
RCTD
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This module is properly designed for testing Tan Delta in rotating machines with TD 5000 and allows increasing the test current and getting the maximum test voltage with high capacitive burdens
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Product
Tan Delta And Capacitance Test Set
TDX 5000
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TDX 5000 is developed as a compact solution for high voltage Capacitance and Tan Delta (Dissipation Factor) measurements. Using the reactor option, TDX 5000 can also perform tests on rotating machines.
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Product
Power Supply Unit
GECC 3000 / 1500
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The DC voltage power supply models GECC3000 and GECC 1500 are designed for supplying the DC voltage and current for testing any type of system which requires an high-power, ripple free DC power supply
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Product
STDETransformer Demagnetizer
STDE
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This option allows neutralizing the residual magnetization of the power transformer core after the winding resistance test. The principle of the option is to apply a constant current of alternate polarities to the transformer winding, as per the IEEE 0062 1995 standard.
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Product
Battery Testing
BTS 200
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This testing and maintaining battery system allows to perform measurement of battery voltage, discharging current test and testing of battery capacity. BTS 200 can be connected with external load unit ELU 200.
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Product
Switch Module
STCS PLUS
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The external module STCS Plus allows to run automatically and with a single set up, any kind of tests on power transformer.
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Product
Surge Arrester Testing
SCAR 10
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This MOV- Metal Oxide Varistor test system is the perfect device to perform analysis and diagnostics on metal oxide arrestors. It is supplied with a special current clip-on transformer designed for the measurement of current leakage.
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Product
Automatic Relay Test Set
DRTS 33
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DRTS 33 is the most powerful diagnostic test set designed to perform accurate tests on protection relays, transducers, energy and power quality meters. This advanced test equipment is also thought to satisfy all the needs related to commissioning and substation maintenance. 3 Current and 3 Voltage generators simultaneously available.
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Product
Circuit Breaker Analyzer
CBA 3000
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CBA 3000 allows any timing test, motion and speed analysis, multiple contemporary static and dynamic contact resistance measurements, both sides grounded (BSG) tests, undervoltage condition test and more. All these functions are integrated in a single lightweight test case without the need of connecting additional external modules.
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Product
Secondary Injection Relay Test Set
T 1000 PLUS
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T1000 PLUS is a protective relay test set especially designed to give the commissioning engineers a multitasking and highly reliable testing equipment.
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Product
Circuit Breaker Analyzer
CBA 1000
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CBA 1000 circuit breaker timing test equipment is a reliable and very accurate operating device for the maintenance and commissioning of circuit breakers in medium and high voltage substation. It can perform static and dynamic contact resistance measurement and it’s an accurate timing speed and motion analyzer.
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Product
Multifunction Substation Test Set
STS 5000
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STS 5000 is a multifunction substation maintenance & commissioning test system for current, voltage and power transformers designed to perform primary tests requested in substations commissioning. It allows to perform accurate tests on CTs, VTs, PTs and ground grid.
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Product
Primary Current Injection Testing
KAM
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This substation testing device is designed to grant high current output when needed in substation commissioning activities.
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Product
Three Phase Relay Test Set
RELTEST 1000
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RELTEST 1000 is a multifunctional relay test set, especially designed for distribution, smart grid and renewable energy plants.
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Product
Tan Delta Test Set
TD 5000
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The high-voltage generator TD 5000 is a complementary module of STS serie. TD 5000 designed to perform Tan Delta measurements, dissipation factor and capacitance of transformer and bushing at the frequency of the mains or in a wide frequency range.















