Produktansicht Synchronisiergerät KSY

KSY 340

Synchronising device for generators, 100-400V AC

The synchroniser relay KSY 3xx adjusts voltage and frequency of a generator to the mains, in order to connect it to the mains at a minimum of frequency and voltage deviation, and with identical phasing. Depending on its configuration, the KSY 3xx  is monitoring sense of rotation, voltage difference and asymmetry. Depending on the parameterization, the voltage is measured as a single-conductor measurement, three-wire measurement without neutral conductor or three-wire measurement with neutral conductor. Frequency measurement is basically carried out on L1 and L2. In island mode, the desired frequency and voltage are internally set by the device.


The comfortable configuration of all settings of the KSY 3xx  is done by means of the parameterisation software KuPa010. Alternatively values can be entered directly at the device. Any access to the device’s parameterisation can be protected by a PIN. The output of display-texts at the device standardly takes place in German and English (switching between languages is possible at any time during operation). Alternative languages, suitable to the customer’s requirements, can be configured and conveniently made available, by means of our parameterisation software KuPa010.

Auxiliary voltage

24V DC (18 ... 36 V)

Power consumption

approx. 4 W bei 24 V DC

Digital inputs

LowActive (Contact voltage 12 V DC, 5 mA, opto-decoupled), in accordance with DIN

Relay outputs

230 V / 50 Hz / 2 A (potential-free)

Analogue Outputs (optionally)

0 ... 10 V DC +/- 0.05 V max. 10.5 V
0 … 20 mA +/- 0.1 mA max. 21 mA

Measurement range

approx. 50 to 230 / 400 V AC, Tolerance < 0,5 % of end value (270 / 480 V)

Frequency measurement

35.0 Hz to 65.0 Hz from approx. 50 V L-N +/- 0.05 Hz

Lead time

adjustable 50 ... 500 ms

Actuating pulse

adjustable from 0.1 s to 100 s

Max frequency deviation

adjustable 0.1 ... 1.0 Hz

Max voltage deviation

adjustable 1 ... 15 %

Ambient temperature

-20 ... +55 °C

Housing dimensions

W / H / D 100 x 75 x 110 mm

standard rail fitting 35 mm

Product Name: KSY 340


Article-Number: 2W300S0000



  • KuPa 010 Stand: 07/2017ZIP 23 MBSoftware for parameterization of devices KNAE 3xx, KIW 3xx and KSY 3xx, Version 010