UL Low voltage systems provide advanced solutions for power distribution
and motor control
MNS switchgear with integrated power and automation for customers in the
process industry, power and infrastructure industries
Produced by Witu factory in Germany, it is a control box made of
thermoplastic materials combined with injection molding technology. The outer
surface is hard and the inner layer is fluffy. It has the same physical
characteristics as polyester material, which can effectively ensure that the
entire box is exceptionally strong. Also, mixed with fiberglass
Unlike the polyester material control box, it does not contain fiberglass,
so there is no need to worry about the exposure of fiberglass over time to the
operation and safety of the control box. The multifunctional control box has a
protection rating of up to IP66 (IP30 after the installation of components).
It is also highly resistant to chemicals and climatic conditions, ensuring
good product performance even under harsh working conditions. In distribution
and hybrid applications, the multi-function control box can be equipped with
Systempro M series modularization devices and Tmax
Plastic-case circuit breakers and control and signal devices to form a
truly integrated automation system.
Suitable for shipbuilding, solar energy, water treatment, rail transit,
metallurgy, petrochemical, communication and traditional machinery and other
industries. Can be customized for different needs of customers.
Different motor starting control modes are supported by parameter setting,
and the running state of contactor is detected by state feedback of contactor
auxiliary contact. The control authority of the motor includes local control and
remote control.
Maximum frame size
rating* by module size (fuseless)
|
400/415V, 65kA, IE3
|
XS size
|
S
size
|
M size
|
L size
|
XL size
|
|
Feeder 3 pole
|
63 A
|
250 A
|
400 A
|
630 A
|
-
|
|
Feeder 4 pole
|
63 A
|
160 A
|
380 A
|
400 A
|
630 A
|
|
|
|
|
|
|
|
|
DOL
(EOL)
|
22
kW
|
55 kW
|
160
kW
|
-
|
250
kW
|
|
HDOL
(EOL)
|
22
kW
|
55 kW
|
160
kW
|
-
|
-
|
|
REV (EOL)
|
7.5 kW
|
30
kW
|
75 kW
|
160 kW
|
-
|
|
|
|
|
|
|
|
|
DOL
(M10x)
|
22
kW
|
55 kW
|
160
kW
|
-
|
250
kW
|
|
HDOL
(M10x)
|
22
kW
|
55 kW
|
160
kW
|
-
|
-
|
|
REV (M10x)
|
7.5 kW
|
30
kW
|
75 kW
|
160 kW
|
-
|
|
|
|
|
|
|
|
|
DOL
(UMC)
|
22
kW
|
55 kW
|
160
kW
|
-
|
250
kW
|
|
HDOL
(UMC)
|
22
kW
|
55 kW
|
160
kW
|
-
|
-
|
|
REV (UMC)
|
7.5 kW
|
30 kW
|
75 kW
|
160 kW
|
-
|
Various necessary motor starting control methods are integrated into the
device. The user can directly select the desired starting control mode in the
M10x motor control interface.
The box with control button means that the contactor can be controlled
directly through the control button without the M10x.
Reverse - Direct start (with limit switch) The reverse - direct start mode
with limit switch refers to the reverse - direct start mode that needs to be
stopped by the position switch, such as valve, damper, actuator control,
etc.
The feed unit control mode is a special starting mode supported by M10x,
which is used for the control and detection of the MCCB feed circuit of the live
operating mechanism.
The M10x offers complete motor protection. Perfect motor protection is to
collect and track the detailed information of various operating conditions
during the operation of the motor, through the setting of fault alarm,
protection action (protection trip) and action delay time
Accurate protection to ensure the safety of production. At the same time,
the detailed information of motor running condition can be detected in real time
on the host computer through communication, which provides the basis for process
analysis and management optimization. Before the equipment may have a major
failure, the alarm can be exceeded
Timely remind management personnel to deal with it, avoid unnecessary
downtime affecting normal production, and ensure the effectiveness of equipment
operation as far as possible.
When the motor running parameters reach the preset alarm value, the
protection device will alarm and report. When the preset trip value is exceeded,
the timer will be activated and the motor will enter the trip countdown state.
The countdown time is set according to the blurt delay parameter.
As long as the fault persists, the countdown will continue. After the
setting delay time is exceeded, the motor will eventually stop. If the fault is
rectified before the countdown ends, the timer will reset and shut down, and the
motor will not stop. If the above occurs, an event record is generated
Message. In addition, operational data such as trip time and reset time can
be collected and reported via the fieldbus.
|
Protection function
|
Description
|
M101
|
M102
|
|
Long start time protection
|
Protect the motor from blocking during starting.
|
§
|
§
|
|
Thermal overload protection
|
Thermal overload protection is to protect the motor from overheating by tracking and calculating the heat capacity of the motor in operation 。
|
§
|
§
|
|
Thermal overload protection for explosion-proof motor EEx e
|
EEx eThe protection takes into account the ratio of the motor locked-current to the nominal current and the maximum motor temperature allowed by the corresponding environmental class。
|
§
|
§
|
|
Start limit protection
|
Limit the number of motor starts within a certain time interval。
|
§
|
§
|
|
Off-phase protection
|
Determine whether to start the phase break protection function according to the ratio of minimum line current to maximum line current。
|
§
|
§
|
|
Phase unbalance protection
|
Poor conductor contact, motor failure or loose wiring will lead to phase imbalance. The difference between the minimum line current and the maximum line current can be determined according to the set parameters. The IEEE standard does not support inverting protection.
|
§
|
§
|
|
Locked-rotor protection
|
Determine whether to start the lock rotor protection according to the ratio of the measured value of the maximum line current and the rated current of the motor. This function only takes effect after the motor starting time has passed。
|
§
|
§
|
|
Undervoltage protection
|
This function protects the motor under low voltage conditions (voltage drop or power failure)。
|
|
§
|
|
Automatic restart
|
It is divided into standard type and enhanced type。
|
|
§
|
|
Light load protection
|
According to the ratio of the maximum line current to the rated current 。
|
§
|
§
|
|
No-load protection
|
It is similar to the light-load protection, but the alarm value, trip value, and fault information are different。
|
§
|
§
|
|
Earth fault protection
|
The ground fault protection of the motor is realized by adding zero sequence current transformer, adjustable fault current trip value and delay time。
|
§
|
§
|
|
Motor thermal protection（PTC）
|
Protection is achieved by detecting the resistance value of the PTC thermistor embedded in the motor winding。
|
|
§
|
|
Motor thermal protection (with PTC relay)
|
The resistance value of PTC thermistor embedded in the motor winding is detected by an external PTC relay。
|
§
|
§
|
|
Motor thermal protection (using RTD relays)
|
The protection is realized by the detection of PT100 resistance embedded in the motor winding by an external RTD relay。
|
§
|
§
|
|
Phase sequence protection
|
Before the motor starts, phase sequence protection is based on voltage detection, and after the motor starts, phase sequence protection is based on current detection。
|
§
|
§
|
、
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