product description

NMSG automatic transfer switch (ATSE) is a combination of switch and logic control. It does not need an external controller to realize the mechatronics automatic transfer switch. It has functions such as voltage detection, frequency detection, communication interface, electrical and mechanical interlocking. Automatic, electric remote, emergency manual control is available.

The operation is realized by the logic control board to manage the operation of the motor and the gearbox with various logic commands. The motor has the switch spring saving energy, the instantaneous release acceleration mechanism, quickly turns on the breaking circuit device or performs circuit conversion, which is clearly visible through The state achieves safe isolation, which greatly improves various electrical and mechanical properties.

The NMSG switch is designed as a metal case that is compact and sturdy. NMSG switch, the control part is metal shell, the switch part is made of glass fiber unsaturated polyester resin, which has strong dielectric property, protection ability and reliable operation safety.

The switch is suitable for automatic conversion of the main power supply and standby of the power supply system or automatic conversion and safety isolation of the two load devices.

The switch is beautiful in appearance, novel, concise, small in size and full in function, and is the best choice for similar products.

The NMSG series has passed the EMC test.

Model meaning

Note:

1. The NMSG-100 type has the difference between fire protection and non-fire protection.

2, with oil machine power generation, feedback signal, remote control, liquid crystal display, RS485 communication and other functions, please specify when ordering;

Scope of application

NMSG series automatic conversion switch is mainly used for AC 50Hz, rated voltage 380v, DC rated voltage 220V, rated current 16 to 3200A in the distribution or motor network, one master or one standby power exchange system and mains and generator set Load switching. It can also be used to isolate and disconnect circuits and circuits from infrequently.

Products are widely used in fire, hospitals, banks, high-rise buildings and other power transmission and distribution systems and automation systems that do not allow power outages.

Standards compliant

International standards:

IEC 60947-1 (1998) 《General requirements for the first part of low-voltage switchgear and control equipment》

IEG60947-3 (1999) 《Low-voltage switchgear and control equipment, switches, isolators, disconnector fuses and electrical appliances》

EC60947-6 (1999) 《Multi-function switch automatic transfer switchgear for low-voltage switchgear and control equipment》

National standard:

GB14048.1-2016 《General rules for low-voltage switchgear and control equipment》

GB14048.3-2016 《Low-voltage switchgear and control equipment, low-voltage switch, isolator, disconnector and fuse combination》

GB/T14048.11-2016 《Low-voltage switchgear and control equipment, multi-function electrical appliances, the first article: automatic transfer switch electrical appliances》

Features

▲Using double-row composite contact\travel-type mechanism\micro-motor pre-storage energy and micro-electronic control technology, basically realize zero-flying fox (no arc-extinguishing hood);

▲Reliable mechanical interlock and electrical interlocking are used to implement independent load disconnecting switch without components. It is safe and reliable to use;

▲Using zero-crossing technology, it can be forced to zero in case of emergency (cut off two power sources at the same time) to meet the needs of fire protection linkage;

▲The load isolating switch is switched by a single motor, and the switching is reliable and stable, no noise, and the impact force is small;

▲The operator drive motor only performs the load isolation switch to switch the instantaneous, the division through the current, the steady state operation does not need to provide the working current, and the energy saving is remarkable.

▲The load isolating switch is equipped with mechanical interlocking device to ensure that the common and standby power supplies work reliably and do not interfere with each other;

▲With obvious on-off position indication, padlock and other functions, it can reliably realize the isolation between power supply and load;

▲Good safety performance, high degree of automation, high reliability, and service life of more than 8,000 times;

▲Mechatronics design, switch conversion is accurate, flexible and smooth, adopts international advanced logic control technology, strong anti-interference ability, no external interference

▲With main power supply and backup power supply; main power supply and backup power supply; main and backup power supply are disconnected for three stable operations (1-0-11);

▲Easy to install, the control circuit is connected by plug-in terminal;

▲ Four operating functions: emergency manual operation, electric remote control operation, emergency disconnection operation in automatic control state, automatic control operation.

Use environment

The NMSG automatic transfer switch works reliably under the following conditions:

▲ altitude does not exceed 2000 meters;

▲The ambient temperature is not higher than 40 °C, not lower than -5 °C, and the relative humidity is not more than 95%;

▲ no explosive atmosphere environment;

▲ no rain and snow invade the environment;

Note: If it is expected to apply to ambient air temperatures above +40 ° C or below -5 ° C - 45 ° C, the user should explain to the manufacturer.

Intelligent performance

1. Three stable working positions:

Changhe: common closing, standby opening. Spare: Commonly used for opening and closing. Double points: common opening, standby opening.

2 two optional automatic working methods

▲ Self-recovery: When the standby is closed and the common power supply returns to normal, the switch will automatically switch to the normal switch regardless of whether the standby power supply is normal or not.

▲ Self-recovery does not self-recover: When the standby is closed and the common power supply returns to normal, the standby power supply is normal, the switch does not switch, and the switch will automatically switch to the normal switch only when the standby power supply is abnormal.

3 four conversion control methods

▲Automatic control: The controller automatically switches to the appropriate working position according to the current voltage condition and the set working mode.

▲Manual control: When the power supply is normal, the switch can be switched to any working position by pressing the button.

▲Manual control: After the key is hit to the manual position, it can be manually operated by the handle.

▲ Remote control: The control switch is switched to the desired working position through the remote programmable input signal or 485 communication port.

4, product features

Real-time monitoring and display of operating parameters, real-time switch position and alarm. Undervoltage, overvoltage, and phase loss protection functions prevent faulty power supplies from supplying power to the load. Self-diagnosis and fault alarm function.

5 optional features

Fire double alarm, automatic power generation control, two sets of programmable signal output relays, power indication, communication.

Control and operation

NMSG-63A~1600A automatic transfer switch control and operation

The logic control board uses different logic programs to manage the operation of the motor and gearbox directly installed in the switch to ensure the position of the switch.

The motor is a neoprene insulated wet heat motor equipped with a safety device that trips when the temperature exceeds 110 ° C and the over current condition. After the fault disappears, it is automatically put into operation, and the reversible reduction gear adopts a spur gear.

Main technical parameters and wiring dimensions