CHAPTER 11

PROGRAMMING GROUP 7: PHASE REVERSAL & PHASE IMBALANCE SET LIMITS/RELAYS

11.1VOLTAGE PHASE REVERSAL AND PHASE IMBALANCE

The set limit alerts the user of an unbalanced or a reversed phase in a Three-phase System. The EPM3000P has two options for this purpose.

PHASE REVERSAL:

Activates when a reversed phase enters the EPM3000P’s metering system.

PERCENT PHASE IMBALANCE:

Activates when the user’s present value percent phase imbalance is exceeded. For example: an unbalanced Three- phase System.

DIAGRAM 11.1: EXAMPLE OF SET LIMITS

1 0 .0 %

L im its T rig g e re d

 

 

P H A S E

 

L im its N o t

IM B A L A N C E

 

(% )

 

T rig g e re d

 

1 0 :0 0 A M

1 1 :0 0 A M

T H R E E P H A S E S Y S T E M IM B A L A N C E

11.2TRIP RELAY

NOTE: THE -NLOPTION MUST BE PURCHASED TO HAVE RELAYS TRIGGERED FROM LIMIT CONDITIONS.

The EPM3000P has two Relays. These relays are linked through the program to Set Limits LM1 and LM2. The user can program above or below set limits for every reading. When a measurement exceeds a particular value, the set limit triggers and alerts the user. Each relay has provisions for a separate delay time (see Chapter 8).

cTRIP RELAY I dTRIP RELAY II eLEVEL

Whether to trip Relay 1. Whether to trip Relay 2.

The level at which the warning mechanism trips. Percentage of voltage imbalance is entered for setup level.

-OR-

fENABLE/DISABLE In the event of Phase Reversal, indicates whether to enable or disable phase reversal detection.

TABLE 11-0: GROUP 7 PROGRAMMING FORMAT

FUNCTION NUMBER

FUNCTION

0.

Voltage Phase Reversal Detection

1.

Voltage Phase Imbalance

E.

Exit Programming GROUP 7

38

GE Industrial Systems

Page 42 Page 44
Page 43
Image 43
GE EPM 3000P instruction manual Phase Reversal, Percent Phase Imbalance
Page 42 Page 44

EPM 3000P specifications

The GE EPM 3000P is a cutting-edge power monitoring and management device designed to enhance the reliability and efficiency of electrical systems. This innovative product combines advanced technology with user-friendly features to meet the growing demands of modern industrial and commercial environments.

One of the standout features of the EPM 3000P is its ability to provide real-time monitoring of key electrical parameters. This includes voltage, current, power, energy consumption, and power factor, all displayed on a high-resolution graphical LCD screen. The device supports a wide range of communication protocols, allowing for seamless integration into existing systems. It is compatible with Modbus, Ethernet/IP, and DNP3, enabling users to communicate and collect data from remote locations efficiently.

Another significant aspect of the EPM 3000P is its robust data logging capabilities. The device can store extensive historical data, which can be easily accessed for analysis and reporting. This feature is essential for identifying trends, diagnosing issues, and ensuring compliance with energy regulations. Customizable alarms and notifications further enhance its functionality, alerting users to potential issues before they develop into costly problems.

The EPM 3000P also emphasizes safety and protection for electrical systems. It is equipped with advanced protection features, including overvoltage, undervoltage, overcurrent, and phase loss detection. This ensures that equipment is safeguarded against electrical faults, reducing the risk of damage and downtime.

In terms of design, the EPM 3000P is both compact and rugged, making it suitable for installation in various environments. Its modular design allows for easy integration with other devices and systems, promoting scalability and future growth. The device is also compliant with international safety standards, ensuring reliability and peace of mind for users.

In conclusion, the GE EPM 3000P is a powerful tool for power management, offering users unparalleled monitoring, protection, and data analysis capabilities. With its advanced features, robust communication options, and user-friendly interface, it is positioned as an ideal solution for organizations looking to optimize their energy usage and enhance the resilience of their electrical systems. This makes it a preferred choice for industries aiming to improve operational efficiency and achieve sustainable energy practices.
Top Page Image Contents