DEIF LSU-112DG generator set parallel control unit

7.2 Parallel islanding of multiple machines

Multiple units are each equipped with an LSU-112DG, with all FS lines connected in parallel (38 interconnected, 36 grounded) and all PS lines connected in parallel (40 interconnected, 36 grounded). Each unit is equipped with a derating potentiometer based on its actual capacity. When the total load of the system changes, each unit automatically adjusts the throttle to distribute power proportional to the reduced capacity.

7.3 Parallel constant power connection with the power grid

When the unit needs to be connected to the power grid, a 0.5-5V signal (from an external power controller or potentiometer) should be connected to the reference input terminal (35) to set the output power. At this time, LSU-112DG is still connected to the FS line (for frequency synchronization, but the grid frequency is fixed, so the FS line is only used for monitoring), and the PS line is used as the output to broadcast the local power (if any) to other units that may be connected in parallel. The governor will adjust the throttle to track the actual power to the set value.

Selection and Ordering Guide

There are two basic models of LSU-112DG:

291306012001: DC power supply type (24-220V DC wide range).

291306012002: AC power supply type (57.7-690V AC wide range).

The following information must be clearly stated when placing an order:

Coupling method: 1W3 or 1W.

Measurement power: It is necessary to calculate the power once based on the CT ratio and PT ratio (for example, CT 500/5, PT 400/100, then the measured power P=500 × 400=200kW).

Rated power factor (cos φ): used for calibrating power transmitters.

Measure voltage (U ₙ): for example, 400V.

Auxiliary power supply: AC or DC and specific voltage value.

Example order code: 2913060120-01 LSU-112DG 01 1W3 100kW 0.8 100V 24V DC

Maintenance and Precautions

Installation should follow NEC (USA) or CEC (Canada) regulations and only use 60/75 ℃ copper wires.

Regularly check the terminal fastening to prevent looseness.

Due to continuous product improvement, DEIF reserves the right to make changes, and the latest information is subject to the official website.

If UL certification is required, it must be specified at the time of ordering and cannot be customized outside the DEIF factory.