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
Multifunction Substation Test Set
STS 4000
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STS 4000 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
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
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
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.
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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
Winding Resistance Test
20A DC booster
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The 20A DC STCS booster allows to perform resistance tests on a PT with a current up to 20 A DC. The option is used together with STS 5000 and STS 4000 and must be connected to STCS module.
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Product
Calibrator Module
CAP CAL
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The purpose of CAP-CAL is to check the correctness of Tan Delta and Capacitance of TD 5000 and TDX 5000. The calibrator includes an extremely high accuracy high voltage capacitor, which comes with a certificate issued by ISA - Altanova Group lab.
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Product
Automatic Relay Test Set
DRTS 66
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DRTS 66 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. 6 Current and 6 Voltage generators simultaneously available.
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Product
Primary Current Injection Test Set
T 2000
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T 2000 is a portable current transformer test set which allows to perform many different measurements such as saturation, ratio and polarity tests and CT winding resistance test. Substation maintenance and commissioning test equipment, T 2000 is extremely appreciated by electrical engineers for its high accuracy and portability.
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Product
Capacitance And Tan Delta Test
Bushing Tap Adapter Kit
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Bushing Tap Adapter Kit is designed to perform Capacitance and Tan Delta tests on power transformer bushings The kit can b e used with the following ISA Test Set STS 5000 TD 5000 STS 4000 TD 5000 TDX 5000.
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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
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
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















