The PCS6000 is a medium voltage high power device. 　　High voltage in the PCS6000 can result in serious injury or DEATH and damage to the equipment. 　　Parts replacement and other work on the PCS6000 must only be carried out by qualified personnel in compliance with local regulations. 　　CAUTION Cooling fans can start automatically! 　　The water cooling system and the cooling fans can start automatically as soon as the auxiliary voltage is switched on or when the EMERGENCY OFF button is released, even if the PCS6000 is de-energized. 　　Switch off the corresponding motor protection switches (see diagrams contained in the cabinet specific documentation) to shut down the cooling system. 　　NOTICE Risk of component damage. 　　PCS6000 parameters are set during commissioning of the device and must not be changed afterwards. 　　Running the PCS6000 with incorrect data can result in improper operation,reduction in control accuracy and damage to equipment.

　　The PCS6000 is a medium voltage high power device. 　　▶ High voltage in the PCS6000 can result in serious injury or DEATH and damage to the equipment. 　　▶ Parts replacement and other work on the PCS6000 must only be carried out by qualified personnel in compliance with local regulations. 　　▶ Low voltage remains on the auxiliary energy distributor of the converter control system after the PCS6000 has been switched off. 　　▶ External auxiliary and control voltages (eg, of measuring circuits) can also remain even if the internal auxiliary power supply has been switched off. 　　▶ Before working on these circuits, verify that the corresponding external voltage sources have been switched off and secured according to the safety rules. 　　High temperatures, risk of burns! 　　▶ Rails, reactors, resistors and fuses can be hot. 　　Cooling fans can start automatically! 　　The water cooling system and the cooling fans can start automatically as soon as the auxiliary voltage is switched on or when the EMERGENCY OFF button is released, even if the PCS6000 is de-energized. 　　Switch off the corresponding motor protection switches (see diagrams contained in the cabinet specific documentation) to shut down the cooling system.

The commissioning tools (according to Table 3–2) are intended for com-missioning of the PCS6000, but they are also used for service tasks.

The ABB PCS 6000 system power distribution cabinet GBU72 3BHE055094R0004 primarily handles circuit breaker control, grid synchronization, communication coordination, and status management for the entire PCS 6000 system. It ensures safe equipment startup and shutdown, stable operation, and fault isolation in high-voltage grid environments. Designed as a core control unit specifically for medium- and high-voltage variable-frequency drives, it integrates circuit breaker control, grid synchronization, communication coordination, and status management functions, making it suitable for high-voltage grid protection and power management in rail transit, industrial drives, and renewable energy sectors.The cabinet's compact size and standardized pin layout facilitate installation in various drives, UPSs, welding machines, and static converters. It communicates with a host controller (such as the AC 800PEC) via optical fiber, supports MODBUS or custom protocols, integrates overcurrent, overvoltage, and undervoltage fault detection, supports fast safety shutdown (response time <1μs), and provides high-speed turn-on/off pulses to reduce IGCT switching losses and improve converter efficiency. Epoxy resin encapsulation offers excellent moisture and vibration resistance, enabling long-term stable operation in harsh environments.

The DigitalFlow GF868 ultrasonic flowmeter uses the patented Correlation Transit-Time™ technique, digital signal processing, and an accurate method of calculating molecular weight. Add to these features the inherent advantages of ultrasonic flow measurement reliability with no routine maintenance, high accuracy, fast response, and wide rangeability, the DigitalFlow GF868 flowmeter is the clear choice for flare gas applications.

The SL contactor has its main contacts sealed inside ceramic tubes from which all air has been evacuated, i.e., the contacts are in vacuum. The arc simply stops when the current goes through zero as it alternates at line frequency. The arc usually does not survive beyond the first half cycle after the contacts begin to separate. The ceramic tube with the moving and stationary contacts enclosed is called a vacuum interrupter or a vacuum bottle and there is one such bottle for each pole of the contactor. A metal bellows (like a small, circular accordion) allows the moving contact to be closed and pulled open from the outside without letting air into the vacuum chamber of the bottle.