 HLR Starter
For use with low and medium voltage wound rotor
motors from 200 kW to 12,400 kW, maximum rotor
volts = 3500 V.
Designed & manufactured in Australia by NHP.
Overview
The HLR starter consists of a stainless steel tank
containing the electrolyte and electrode assemblies,
control cubicles which house the shorting contactor
and ancillary control equipment, mounted on and
within a galvanized steel frame (no frame for HLR700
and HLR1100 models).
Electrode movement is provided by a gear motor and
belt drive. A clutch arrangement is used to connect
the moving electrode carriage to the belt drive. This
prevents damage should the carriage be driven into
the end stops, it also eliminates the need for over travel
limit switches.
Through the geared motor and belt drive assembly,
the variable speed drive controls the rate at which the
electrodes move, and in turn, the starting time of the
motor. The electrodes move through a horizontal plain
to provide a near linear resistance/travel characteristic.
The turn down ratio (ratio of initial to final resistance)
is typically 200:1 thereby providing smooth starting
and an extremely low torque surge on energisation of
the rotor shorting contactor. The horizontal movement
of the electrodes also acts to agitate the electrolyte
thereby eliminating the need for a circulation pump
for most ‘standard’ duty applications.
Dual and triple units can be provided for applications
with multiple motors driving the same load. Load
sharing, or trimming resistors as they are otherwise
known, can be added to match the speed and current
drawn by motors that are individually controlled but
driving the same load, for example head end drives on a
conveyor system.
Maintenance primarily consists of topping up the
electrolyte with potable water, greasing the electrode
carriage guide rail bearings and ensuring all connections
are tight, annually or as otherwise required.
Standard I/O & Signalling
| Input signals |
Dry contact input |
| - Start/Run |
- 1 x normally open input
(close to start/run, open to stop) |
| Output signals |
Voltage free contact |
| Ready to start |
1 x Normally open |
| Shorting (Run) contactor closed |
1 x Normally open |
| Electrolyte level (Low) |
1 x Normally open |
| Electrolyte temperature (High) |
1 x Normally open |
| Starter fault |
1 x Normally open |
| Indication |
|
| Start |
|
| Run |
|
| Fault |
|
| Electrolyte level low |
|
| Electrolyte temp high |
|
| Metering |
|
| Rotor current |
1 x analogue meter (displays initial
start current only to check electrolyte/resistance) |
| Electrolyte temperature |
1 x tank
mounted dial gauge |
HLR Ratings
HLR starters are designed to meet the starting torque requirements of the application
and the starting duty (starting time and starts per hour) specified by the user. The
ratings given to HLR starters are therefore variable and application dependant.
| Starter Model |
Nominal motor kW rating at starting torque of; |
| Single motor drives |
0.7 x FLT |
1.0 x FLT |
1.4 x FLT |
2.0 x FLT |
| HLR700 |
1400 |
1000 |
700 |
500 |
| HLR1100 |
1600 |
1100 |
790 |
550 |
| HLR1400 |
2600 |
1800 |
1300 |
900 |
| HLR2300 |
4200 |
3000 |
2100 |
1500 |
| HLR4000 |
6200 |
4500 |
3100 |
2200 |
| HLR4000/2 |
12400 |
9000 |
6200 |
4400 |
| Dual & Triple motor drives |
| HLR700 Dual Compact |
2 x 1000 |
2 x 700 |
2 x 500 |
2 x 360 |
| HLR2000 Dual Compact |
2 x 4200 |
2 x 3000 |
2 x 2100 |
2 x 1500 |
| HLR4000 Dual |
2 x 6200 |
2 x 4500 |
2 x 3100 |
2 x 2200 |
| HLR4000/2 Dual |
2 x 12400 |
2 x 9000 |
2 x 6200 |
2 x 4400 |
| HLR1300 Triple Compact |
2 x 2000 |
2 x 1500 |
2 x 1000 |
2 x 700 |
Notes:
- Nominal ratings only, based on 4 consecutive starts followed by 2 starts per hour from hot.
One start per hour from hot for HLR4000 models.
- Actual ratings will depend on start torque and run-up time required
- For higher starts per hour or for extended run-up times, a heat exchanger may be added.
- Electrode movement and run-up time controlled by inbuilt variable speed drive.
- FLT = Full Load Torque otherwise referred to as Motor Rated Torque
- Control of larger motors is possible. Contact NHP for selection assistance and advice.
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