Resistive modules to be added to the regenerative loads as an option

ELECTRONIC ACTIVE REGENERATIVE LOAD BANKS

 

Active-regenerative Load Banks continuously variable in power, power-factor, frequency and voltage.

Automatic load control module based on user demand

(provides a minimum load to the generator avoiding prolonged underloading)

Electronic Active-dissipative

(non-regenerative) Load Banks continuously variable in power, power-factor, frequency and voltage

GENTEST ALR – ELECTRONIC ACTIVE REGENERATIVE LOAD BANKS - 50 to 1500 KVA

Intesys Electronic Active Regenerative Load Banks are based on a PWM converter. Load regulation is done by a PWM converter and the power dissipation is done by the Grid via an AFE (Active Front End). The ALR is continuously variable in the power with 1% resolution, in cos-phi (0 inductive to 0 capacitive 1), in frequency (40 to 400 Hz) and in voltage (0 up to 690 V), distortion max 3% (directives IEEE 519)

The load regulation is performed by a properly filtered PWM converter in order to obtain a level of distortion better than the public network, plus a second PWM converter (AFE) for regeneration and synchronization with the GRID including a filtration system for the isolation and eventual resale of energy to Grid operator

 

The advantage over a passive load:

 

–      Reduced space (there are no dissipative elements or fans)

 

-       Quiet (there are no dissipative elements or fans)

 

-       Power factor adjustable by the user from 0 to 1 inductive and from 0 capacitive to 1

 

-       Variable voltage from 0 to 690 V, variable power from 0 to Pmax (1% accuracy), variable frequency from 40 to 400 Hz (higher frequencies

        possible for special applications)

 

-       Waveform distortion better than public network (THD <3%)

 

-       Regeneration to the Grid with the option to resell the energy to the Grid operator

 

 

GENTEST ALD – ACTIVE DISSIPATIVE LOAD BANKS (NON-REGENERATIVE)

See models and codes

Intesys Active Dissipative (non-regenerative) Load Banks are based on a PWM converter and a resistor. Load regulation is done by a PWM converter and the power dissipation is done by a power resistor. The ALD is continuously variable in the power with 1% resolution, in cos-phi (0 inductive to 1, 0 capacitive to 1), in frequency (40 to 400 Hz) and in voltage (0 up to 690 V), max 3% distortion (directives IEEE 519).

The resistor load comes instead of the AFE regenerative module.

 

The load regulation is performed by a properly filtered PWM converter in order to obtain a level of distortion better than the public network, plus a ventilated DC resistive load with a lower power (80%) than the generator under test and and a system of DC-Bus early-stage pre-charge of the DC bus

 

The advantage over a passive load:

 

–     smaller dimensions (there is only a one-step, DC resistive element with ventilation)

 

–      power factor adjustable by the user from 0 to 1 inductive and from 0 capacitive to 1

 

–      variable voltage from 0 to 690 V, variable power from 0 to Pmax (1% accuracy), variable frequency from 40 to

        400 Hz (higher frequencies possible for special applications)

 

–      waveform distortion better than public network (THD <3%)

 

–      absence of reactive passive elements (inductors and capacitors)

 

–      less complex design (no contactors for load steps needed)

 

 

RM – DISSIPATIVE ADD-ON MODULE FOR REGENERATIVE LOAD BANKS GENTEST ALR (RESISTOR MODULE)

See models and codes

It is a  ventilated resistive DC load, powered approx 80% of generator under test, to be connected to the GenTEST ALR active regenerative load. It allows the dissipation of energy when regeneration is not possible (Grid not available)

 

 

ARM -  AUTOMATIC LOAD CONTROL MODULE BASED ON POWER USER DEMAND

See models and codes

 

 

Automatic load control module based on user demand (provides a minimum load to the generator avoiding prolonged underloading).

ARM performs automatic power load setting in order to a minimum load to the generator thus avoinding prolonged underloading and prolonging the life of the engine (anti wet-stacking effects).  The load power is varied in inverse proportion to the power drawn by user

 

FEATURES

 

-      Threshold setting in Amperes

 

-      Adjustment in steps or continuously

 

-      Set number of steps: 2, 4, 8

 

-      Setting the response time (delay in the START and STOP

 

MODELS AND CODES

 

INTESYS Srl - Testing Systems

Viale Pasubio, 25/4 - 36030 Caldogno (Vicenza) – tel +39 0444 905440 fax +39 0444 1830 932 - skype: intesyssrl - info@intesys-srl.it