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