IEC 60335-2-59 30KW Resistive Load Bank For Electrical Load To
Power Source
Product information:
This resistive load is required by IEC 60335-2-59 clause 3.1.9.
A resistive load bank is a device used to apply an electrical load
to a power source, such as a generator, uninterruptible power
supply (UPS), or electrical system, for testing, commissioning, and
maintenance purposes. It consists of a bank of resistors that
emulate the electrical load that the power source would normally
encounter during operation. Here are the key features and functions
typically associated with a resistive load bank:
Load Simulation: The resistive load bank provides a simulated
electrical load that mimics the real-world conditions that the
power source will face. It does this by using resistive elements to
convert electrical energy into heat, effectively drawing current
from the power source. This simulated load allows for testing and
evaluating the performance, capacity, and stability of the power
source under different load conditions.
Load Control: A resistive load bank enables precise control over
the load parameters, including the load level, power factor
(leading or lagging), and load imbalance. Load control is essential
for accurately simulating various operating conditions and ensuring
that the power source is tested under realistic scenarios.
Power Dissipation: The resistive elements in the load bank convert
electrical energy into heat, dissipating it into the surrounding
environment. Adequate cooling mechanisms, such as fans, are often
incorporated into the load bank design to maintain the desired
operating temperature and prevent overheating of the resistors.
Load Monitoring: Resistive load banks typically include monitoring
capabilities to measure and display various electrical parameters,
such as voltage, current, frequency, power factor, and load
imbalance. These measurements allow operators to assess the
performance of the power source and ensure that it meets the
desired specifications.
Portable or Stationary Design: Resistive load banks are available
in both portable and stationary configurations. Portable load banks
are compact and lightweight, making them easy to transport and
suitable for on-site testing and troubleshooting. Stationary load
banks are typically larger and designed for permanent or fixed
installations in testing facilities or power system laboratories.
Safety Features: Load banks incorporate safety features to protect
both the power source and the load bank itself. These features may
include short-circuit protection, overvoltage protection,
overcurrent protection, and thermal protection. Safety interlocks
and indicators ensure that the load bank operates within safe
limits and prevents any potential damage or hazards.
Load Testing Applications: Resistive load banks find applications
in various industries and scenarios. They are commonly used for
load testing and commissioning of generators, UPS systems,
transformers, switchgear, and other power system components. Load
banks are also used for periodic maintenance, performance
verification, and troubleshooting of power sources to ensure their
reliable operation.
Resistive load banks provide a controlled and repeatable method for
testing and validating the performance of power sources. By
applying a simulated electrical load, they allow for the assessment
of the power source's capabilities, efficiency, voltage regulation,
and overall stability under different operating conditions.
Technical Parameters:
| System composition | Load cabinet, resistive load, on-site data acquisition, manual
load/unload control, electrical control part, heat sink and
auxiliary control, etc. |
| Total discharge power | Resistive 30KW (designed according to three phase 220V/60HZ); at
the same time meets 30KW single-phase 127V/60HZ (the current
carrying capacity of the neutral line is the sum of the three-phase
carrying capacity) |
Resistive load binning
30KW total 6 gears | Any adjustment by combinations within 1KW-30KW power range (minimum
step 1KW): 1KW, 2KW, 2KW, 5KW, 10KW, 10KW. |
| Test voltage | Three-phase AC220V/single-phase AC127V
Remark: Single and three-phase load test cannot be used at the same
time |
| Test frequency | 60HZ |
| Resistance tube | Each resistance element: insulation resistance above 500MΩ,
withstand voltage AC2000V for 1-minute, high temperature resistance |
| Load characteristics | Resistive load |
| Contactor | China brand contactor |
| Breaker | China brand breaker |
| Heater | Wuxi Zhuxing |
| Power Factor | 1.0 |
| Load connection | Y |
| Loading accuracy | ±3%； |
| Three-phase balance | The unbalance degree is less than or equal to 3%; |
| Way of working | Continuously working |
| Power supply | AC220VAC/60HZ/three-phase four-wire system; (reserved wiring
terminals) |
| Cooling method | Forced air cooling |
| Way to control | Manual button control |
| Insulation class | F |
| Detection function | Real-time display of voltage, current, power, frequency, power
factor, etc. |
| Load protection | Short circuit, over current, high temperature, low air volume and
fan failure protection |
| Fault alarm | There is fan failure, load high temperature alarm |
| Load cabinet dimensions | L700mm×W800mm×H1000mm (L×W×H), with pulley (height 150MM) |
| Weight | 172KG |
| Installation location | Indoor |
Power supply from test sample: If the power supply from the test
sample is three phases, then all the GA, GB, GC and N terminals
should be connected to test sample correspondingly (GA+GB+GC+N); if
the power supply from the test sample is single phase, then one of
the GA, GB, GC terminals plus N terminal should be connected to
test sample correspondingly (such as GA+N terminals).
Power supply from mains: the power supply from mains should be
three phases AC220V/60Hz, the power supply is for the control
components of this load bank. Operator should remove the lower
three wires from the lower three terminals, and wrap up them well.
Then operator uses the power supply cord we’ve offered to connect
to the mains (L1+L2+L3+PE). The load bank must be grounded reliably
before use.
