PGR96M .../5A, Vattmeter

Description

Electronic instrument on the front panel (96x96) used to protect generators against overloads and inverse power. The instrument is composed of a power converter with an analogue output connected to the needle indicator with 2 relays. The unit measures and indicates the system's power constantly (measurement in 4 quadrants), sending an alarm signal when the power exceeds the set trip values. The alarm is indicated by activating the output relays. The two LEDs on the front panel display the status of output relays. The scale is exchangeable.

Applications

The instrument has two independent relays: an overload and an inverse power relay.

Overload Protection

• Trip point adjustable between 0 and 100% of the scale base power.
• Hysteresis adjustable between 1 and 50% of the scale base.
• Delay adjustable between 0 and 30 seconds.

Inverse Power Protection

With multiple generators connected in parallel, one generator may consume power and work as a motor under certain conditions ("motorization"). The relay is activated when these conditions are met.

• Trip point adjustable between 0 and 20% of the scale base power.
• Relay interlocking (latch): When the alarm condition is met, the relay remains activated until the instrument's auxiliary power supply is shut down, even if the alarm condition is resolved.
• Fault security: The relay bypass position is the same as when the alarm is triggered. When the auxiliary power supply is shut down, the unit sends an alarm.
• * Option available without relay interlocking (latch) upon request.