● The embedded high reliability & real time
motor protection function can monitor the motor’s working conditions when it
starts or under the normal operation.
●
Applying the touch screen interface, the operation is much more convenient and
comfortable, there is component structure inside the equipment and modular
installation is available, the equipment has multiple overvoltage absorption
and protection function. The equipment can decrease the harmful impact on grid
when motor gets start by limiting and clipping of instantaneous dv/dt,
lightning impulse voltage, switching overvoltage and transient transition
progress.
● The
device has the mode of multiple optional soft start and soft stop, applies to
no-load, full load, and 150% overload starting. Jumping mode can realize the
smooth start under bigger over-load, which can save the investment cost and
prolong the lifetime of the motors and have a good performance on energy
saving. The equipment is the best substitute for imported ones.
Protection & Monitoring
● Over voltage protection, under voltage protection
● Active
power/Reactive power Testing
●
Overload protection, under voltage protection
● Power
factor monitoring
● Phase
shortage protection, Phase sequence protection
● Motor
temperature protection, Over hot Protection
●Short
Circuit Protection, Motor Shaft Lock Protection
● Phase
Current Unbalance Protection
●
Frequency Protection, Ground Connection/Leakage Protection
●
Starting time Leakage limitation.
Specification of UNT-HVSS softstarter series:
|
Working conditions |
|
|
Load type |
Three-phase HV/MV asynchronous squirrel-cage motor,
synchronous motor |
|
Voltage range |
6 kV; 10 kV |
|
Rate frequency |
50Hz ± 2Hz |
|
General power range |
6 kV 150
kW-12000 kW 10 kV 200
kW-20000 kW |
|
Control power |
220VAC, supplied by cabinet PT or on spot small bus |
|
Cooling method |
natural air cooling |
|
Ambient temperature: -15℃-50℃ |
|
|
Relative humidity: 5%-95% |
|
|
Altitude: up to 2000 m |
|
|
Locations without metal chips, conductive dusts,
corrosive |
|
|
Setting parameters |
|
|
Startup mode |
|
|
Constant current start |
|
|
Kick-up start |
|
|
Startup period |
(1-120) s, adjustable |
|
Startup current |
(1.0 -5.0) Ie, adjustable |
|
Initial voltage |
(30-100) % Ue, adjustable |
|
Kick-up impulse period |
(1-5) s, adjustable |
|
Shutdown mode |
Direct shutdown/soft shutdown |
|
Soft shutdown period |
(1-120) s, adjustable |
|
Protection functions |
|
|
Underload protection |
Setting range: (1-99) % Irate |
|
Actuation time: (1-250) s |
|
|
Overload protection |
Setting range: (100-400) % Ie (effective when
bypass is running) |
|
Actuation time: (1-250) s |
|
|
Undervoltage protection |
Setting range: (1-99) % Ue |
|
Actuation time: (1-250) s |
|
|
Overvoltage protection |
Setting range: (100-180) % Ue |
|
Actuation time: (1-250) s |
|
|
Open-phase protection |
Actuation time: (1-250) s |
|
Phase-sequence protection |
Actuation time: 0 s |
|
Startup overfrequency protectionrts |
Setting range: startup or shutdown (1-99) times or
non protection per hour |
|
Actuation time: 0 s |
|
|
Three-phase
current unbalanced protection |
Setting range: (1-100) % |
|
Actuation time: (1-250) s |
|
|
Bypass
abnormality protection after startup |
Actuation time: 2 s |
|
Thyristor fault protection |
Actuation time: 0 s |
|
Locked rotor protection |
Setting range: (400-800) % Ie |
|
Actuation time: 0 s |
|
|
Communication interface |
|
|
Communication interface |
RS-485 |
|
Communication protocol (optional) |
Modbus RTU, Profibus DP |
|
Operation interface |
|
|
Display whether system working voltage value and
curve, working current value and curve, communication and working status are
normal |
|
|
Memory function |
|
|
Historic fault record |
Record most recent five fault messages, including
fault type and system working state when fault occurs |
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