Viessmann ESS CHP Spezifikationen PDF herunterladen (Seite 25)

Subject to changes due to technical improvements ESS Energie Systeme & Service GmbH

CHP accessory range – 01/2010 25

5368 463

Electronics 6

6.2.2 Uninterruptible reverse synchronisation

Article number CHP module type ESS Viessmann

All CHP module types 710-00-0057 7411204

Function After power is restored following a power failure and CHP emergency power mode stops, the module is

automatically resynchronised to the public grid, as long as the on-site mains isolator is able to perform

synchronisation.

Power failure

The mains isolator is open, the CHP module operates in isolated mode

Power supply restoration

After the mains stabilising time has expired, the synchroniser receives the "enabled for synchronising"

signal.

The synchroniser compares the actual "mains voltage" with the "generator voltage" or the "busbar

voltage" and regulates the CHP module speed via the "higher/lower" adjusting pulses.

If the voltage, frequency and phase angle differential are within the permissible limits, then the start pulse

to the mains isolator is issued.

After switching and feedback (mains isolator is ON), the CHP module automatically enters "parallel

mains mode".

Provide this control for every module; the load stages are managed on site.

The uninterruptible reverse synchronisation is commissioned and the safety interlocks within the modules

are disabled on site.

Additional option:

Uninterruptible emergency power supply when the machine is running with optimised load (consumer

load lower than module output) available on request; load stages are managed on site.

Standard delivery • In separate wall mounted casing

Control panel: 500 x 500 x 210 mm (H/W/D)

IP rating: IP 41

Colour: RAL 7035

Max. ambient temperature: 45 °C

Max. relative humidity: 70 %

VDE: 0660/500

Cable entry: below

Door hinges: on left

• With the following integral parts:

Fuse 24 VDC (power supply from module control eld)

Fuse 400 V mains voltage

Fuse 400 V busbar voltage

Synchroniser SYN

Time relay

2 pce Fleeting relay

5 pce Control relay

Control panel complete with all necessary fuses and relays, wired to terminals ready for connection.

On-site requirements:

• Synchronising mains isolator with

- Motor storage drive 24 VDC

- Switch-on coil 24 VDC

- Trip coil 24 VDC

- Feedback contacts (actual ON / actual OFF)

• Mains test voltage output 400 V / 6 A upstream of mains isolator

• Sufcient cable (cross-section of the 24 VDC cables)

In case of problems such as

- large distances between the CHP and mains isolator

- high current drawn by the motor drive

- high currect drawn by the switch-on/trip coils

a separate on-site buffer voltage 24 VDC must be provided.

Delivery As loose accessories for on-site installation

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