The JTP-1501 is designed to test the electrical and air-conditioning infrastructure in data centre halls continuously, at a power factor of 1pu, without having to utilise the normal operating load. It is intended to be operated indoors, and the enclosure is fitted with castors to allow it to be easily moved around.
You connect the load bank to the power supply with 5 x IEC 60309 32A 3P+N+E plugs to avoid the need for inter-connection boxes. Each plug supplies a separate 20kW load section.
To allow the exhaust air to be ducted directly into the air-conditioning system without damaging temperature sensitive equipment, the exhaust air temperature rise is limited to 35°C above ambient.
A power meter installed in the local control panel shows three-phase voltage, current, active power, reactive power, apparent power, power factor, and frequency of the load to an accuracy class of 0.5, with the same information displayed on the PC screen when in use.
The user can select the control mode as local or PC mode with a selector switch on the local control panel. Only one mode can be active at a time.
In local mode the load bank is controlled manually by selecting the required load using the load step selectors on the local control panel and then pressing the master load switch. This allows the load to be changed with a single button press without intermediate steps.
Software is provided for installation on the customer’s PC. The software allows the control of the load bank remotely via a RS485 cable and USB adaptor, along with data logging and reporting.
The software allows two control methods, manual or automatic loading. In manual mode the user selects the required load which is then set continuously. In automatic mode the user sets the power and time profile for a full test cycle which is then run automatically.
Up to 80 load banks can be controlled and monitored either individually or as a single load group from the PC by connecting them in a daisy chain configuration with RS485 cables. Any abnormal operating condition is highlighted on the software control screen.
The software displays the load characteristics in 1s intervals as both absolute values and in graph form. Data is saved in the software and can be queried either during or after testing. Test data can be exported in a spreadsheet, and graphs can be exported as .jpg files.
The resistors are a combination of:
All elements undergo a PFWV test at 2.5kV 50Hz for 1 minute.
The resistor elements are designed to reach no more than 1/3 of the maximum wire operating temperature which ensures a long operating life whilst limiting the change in resistance (±2%) and therefore maintaining a constant load value across the operating profile. The manufacturing tolerance ensures all loads are within ±3% at rated voltage.
The auxiliary supply for the fans and the control system is derived from the Section A test load.
The auxiliary load is approximately 1kW and the remaining load steps within Section A have been reduced to a total of 19kW as a result.
We specialize in creating custom lighting designs for your home or business. Let us help you create the perfect ambiance.
The load steps are switched with Schneider Electric contactors protected by fuses on each step for short circuit protection. Each contactor is fitted with auxiliary contacts to provide status feedback.
The control circuit is protected by an MCB.
The control system utilises a highly reliable Siemens PLC to reduce the number of intermediate relays and timers required and simplify manufacture and maintenance.
Protection consists of:
The following accessories are included with the load bank:
We use essential cookies to make our site work. With your consent, we may also use non-essential cookies to improve user experience and analyze website traffic. By clicking “Accept“, you agree to our website's cookie use as described in our Cookie Policy.