1 Applicable scope

The YCQD7 series intelligent integrated star-delta starter (hereinafter referred to as the starter) is suitable for three-phase squirrel-cage asynchronous motors with an AC frequency of 50Hz, a rated voltage of 380V/400V, a rated operating current of up to 110A (phase current when the starter is in delta connection), and a control power of up to 90kW. It is used to control the starting, running, and stopping of three-phase squirrel-cage asynchronous motors with a stator winding connection changed from star to delta, thereby reducing the starting current and the impact of motor starting on the transmission network.

The starter adopts a modular design and integrated structure,integrating contactors,intelligent controllers,and auxiliary contacts.The intelligent controller can automatically control the starter to run according to the predetermined program,thereby completing the star delta starting of the motor.

2 Model and meaning

YCQ D7 110 □

Functional module:

Unmarked (automatic type)

S (mechanical emergency type) Z (Multi functional)

Shell current ：110A   Design serial number Starter

Enterprise characteristic code

3 Main technical parameters and functions

Parameter

Unit

YCQDC-110

Rated working current :Ie(AC -3)

A

65

75

85

95

100

110

Rated working voltage :Ue

V

380V/400V

Rated insulation voltage: Ui

V

800

Number of poles

P

3

Mechanical lifespan

Automatic/multifunctional

10000 times

60

Mechanical emergency (manual operation)

second

3000

Suggest controllable operating power of three-phase squirrel cage motor (AC-3)

kw

45

45

55

55

75

75

Supporting fuse body

A

NH1-125

Ability of wiring terminals to connect wires

mm2

35

50

Coil parameters

Rated control voltage Us

V

220V/230V

pull-in voltage

%Us

80% ~110%

Release voltage

%Us

20% ~75%

Coil suction

VA

230

Maintain power

VA

19

32

Function

Automatic type

S mechanical emergency type

Z multifunctional

Star Triangle Conversion

■

■

■

Adjustable star running time

■

■

■

Mechanical emergency (manual forced start)

-

■

-

Overload protection

-

-

■

Locked rotor protection

-

-

■

Phase loss protection

-

-

■

Three-phase imbalance protection

-

-

■

Overvoltage protection

-

-

■

Undervoltage protection

-

-

■

Trouble display

-

-

■

Fault alarm

-

-

■

Status display

-

-

■

Communication function

-

-

□

4 Normal working and installation conditions

4.1 The altitude of theinstallation site shallnot exceed 2000m.

4.2 The upper limit value of the nomal operating environment temperature shall not exceed+40℃,the lower limitvalue shall not be lowerthan-5℃,and the average temperature value within 24 hours shall not exceed+35°℃;When the ambient temperature exceeds the range,users need to negotiate with the manufacturer.

4.3Vertically installed starters have power terminals facing upwards and load terminals facing downwards;The incination angle between theinstallation surface and the vertical surface of all starters shall not exceed±5°,which does not affect their performance.

4.4 No abnormal vibration or impact.

4.5 Pollution level:Level3.

4.6 Fixation method:screw installation.

5 Structural features and working principles

Star Delta Start:When the control coil s energized with a 220V control voltage,the main contactor of the product closes,forming a star circuit with the star contactor.The motor starts running at reduced voltage.When the operating time reaches the set switching time and the motor speed approaches normal speed,the main contactor automatically disconnects and then simultaneously closes with the angle contactor,forming a triangular circuit,and the motor runs at full voltage.

Mechanical emergency:When the signal line or the control line of the fire pump control box malfunctions,making it impossible to automatically or manually start the fire pump,the mechanical emergency start device on the fire pump control box door can be used to manually close the main and comer contactors of the fire pump to start the fire water pump.

6 Appearance and installation dimensions