TECHTOP TD350 - Safety Guidelines

TD350 Series VFD Safety precautions
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manual
Read the operation manual before
operating on the equipment
Note
Note
Procedures taken to ensure proper
operation
Note
1.4 Safety guidelines
 Only trained and qualified electricians are allowed to carry out related
operations.
 Do not perform wiring, inspection or component replacement when power
supply is applied. Ensure all the input power supplies are disconnected before
wiring and inspection, and wait for at least the time designated on the VFD or
until the DC bus voltage is less than 36V. The minimum waiting time is listed in
the table below.
VFD model
Min. waiting time
220V
0.75–55kW
5 minutes
460V
1.5kW-110kW
5 minutes
132–315kW
15 minutes
350–500kW
25 minutes
575V
0.75kW-110kW
5 minutes
Note: Unless otherwise specified, the "**kW" described in this manual refers to
the power of the HD (CT) models. For VFDs of 75, 132, and 500 kW, HD (CT)
and ND (VT) models must be distinguished.
 Do not refit the VFD unless authorized; otherwise, fire, electric shock or other
injuries may occur.
 The base of the radiator may become hot during running. Do not touch to avoid
serious injury.
 The electrical parts and components inside the VFD are electrostatic. Take
measures to prevent electrostatic discharge during related operation.
1.4.1 Delivery and installation
 Install the VFD on fire-retardant material and keep the VFD away from
combustible materials.
 Connect the optional brake parts (brake resistors, brake units or feedback
units) according to the wiring diagram.
 Do not operate on a damaged or incomplete VFD.
 Do not touch the VFD with wet items or body parts; otherwise, electric shock
may occur.
 Solid State motor overload protection reacts when reaches 150% of FLA.