Powtran PI160 Series User Manual

Chapter 1 Inspection and safety precautions
4
Chapter 1
1-3.Precautions
No.
Type
Explanation
1
Motor insulation
inspection
Please perform motor insulation inspection for the first time use,
re-use after leaving unused for a long time as well as regular
check, in order to prevent damage to the inverter because of the
motor's winding insulation failure. Wiring between motor and
inverter shall be disconnected, it is recommended that the 500V
voltage type megger should be adopted and insulation resistance
shall be not less than 5MΩ.
2
Motor thermal
protection
If the rated capacity of the selected motor does not match the
inverter, especially when the inverter rated power is greater than
the motor rated power,be sure to adjust the motor protection
parameter values inside inverter or install thermal relay in the
front of motor for motor protection.
3
Run over power
frequency
This inverter can provide (0Hz to 400Hz) output frequency If the
user is required to run at 50Hz or more, please consider the
endurance of your mechanical devices.
4
Vibrations of
mechanical device
Inverter output frequency may be encountered mechanical
resonance point of the load device, you can set jump frequency
parameter inside inverter to avoid the case.
5
Motor heat and
noise
The inverter output voltage is PWM wave that contains a certain
amount of harmonics, so the temperature rise,noise and vibration
of motor show a slight higher than frequency power frequency
operation.
6
Output side with
piezoresistor or
capacitor for
improving power
factor
The inverter output is PWM wave, if the piezoresistor for
lightning protection or the capacitor for improving power factor
is installed in the output side, which easily cause the inverter
instantaneous overcurrent or even cause damage to the inverter.
Please do not use.
7
Contactor or switch
used in the inverter
input/output
terminals
If contactor is installed between power supply and inverter,the
contactor is not allowed to start/stop the inverter. Necessarily
need to use the contactor to control the inverter start/stop, the
interval should not be less than one hour. Frequent charging and
discharging may reduce the service life of the inverter capacitor.
If the contactor or switch is equipped between output terminals
and motor, the inverter should be turned on/off without output
status,otherwise which easily lead to damage to the inverter
module.
8
Use other than the
rated voltage
PI series inverter is not suitable for use beyond the allowable
operating voltage described in this manual,which easily cause
damage to the parts inside inverter. If necessary, please use the
corresponding transformer to change voltage.
9
Never change 3-
phase input to 2-
phase input
Never change PI series 3-phase inverter to 2-phase one for
application. Otherwise it will lead to malfunction or damage to
the inverter.
10
Lightning surge
protection
The series inverter is equipped with lightning overcurrent
protection device, so it has the ability of self-protection to
lightning induction. For the area where lightning is frequent, user
should also install the extra protection in the front of the inverter.
11
High altitude and
derating application
When the inverter is used in areas over 1000m altitude,it is
required to reduce frequency because the thin air will decrease
the cooling effect of inverter. Please consult our technician for

Powtran PI160 Series Specifications

General

Brand	Powtran
Model	PI160 Series
Category	Inverter
Language	English