Questionnaire for Price Quotations of Water Turbines

Contact detail

Company:

Responsible person:

Address:

Country/ZIP code/City:

Phone:

E-mail:

Project data

Project name:

Project location:

GPS coordinate:	N	E

Altitude of the project above sea level: m.a.s.

Gross head (static head): m	Net head:	m

Gross head is defined as the vertical distance between weir and tail water level.

Please submit the following:

Upper water level	:	m.a.s.

Tail water level at Qmax:	m.a.s.

Tail water level at Qmin:	m.a.s.

Level of machine room floor:	m.a.s.

Drinking water system:	☐ YES	☐ NO

In case of drinking water system, notify the existing backpressure	bar

What volume of water is available in months per year?

Means usable flow = after the nominal flow deduction.

Max.:	l/s	appr. months/year

Average:	l/s	appr. months/year

Min.:	l/s	appr. months/year

A flow duration curve is preferred, if available.

Is storage available?	☐ YES	☐ NO

Area:	m²	Depth:	m

A reservoir will help to keep the turbine running throughout the year when flow rates vary -day-time operation; night-time fill-up of reservoir.

How is the flow conducted to the turbine?

☐ Open canal: length: m	width × height: m

☐ Penstock: length: m	material:

Inside diameter:	mm	wall thickness:	mm

Max. permissible pressure rise in the penstock:	bar

These figures are required for calculating net head and governor capacity.

Generator for electricity production:

☐ Synchronous	☐ Asynchronous	☐ Permanent magnet

Generator voltage:	V	Frequency:	Hz

☐ Others:

A three-phase induction generator can be used for operating parallel with the utility grid. Electric current is supplied to the public network.

A three-phase synchronous generator is needed for stand-alone generation or for grid parallel operation with the ability to provide emergency power in case of grid failure.

Pumps, mills, sawing machinery, etc.

Mode of operation:

☐ Power supply to utility grid Turbine regulation for run-of-the-river plants with grid parallel operation (power supply to utility grid), controlled by the available flow (water level signal).

☐ Stand-alone operation only Stand-alone operation requires speed control, to prevent frequency deviations caused by load changes.

☐ Stand-alone operation and power supply to grid (the most expensive variant) Turbine regulation can be varied between water level controls for grid parallel operation and speed control for stand-alone (isolated) operation.

Automatic turbine regulation

☐ According to water level	☐ Other:

Quality of water (e.g. silt content, ph.-value, sea water etc.):

Scope of supply

☐ Turbine

☐ Service Valve

☐ Governor or Regulator

☐ Generator

☐ Medium voltage switchgear

☐ Sluice gate

☐ Trash rack cleaner

☐ Power transformer
Grid voltage V

☐ Auxiliary transformer

Deadline to submitting an offer:

The purpose of the offer:

Construction of a new power plant, modernization of an existing plant, feasibility study, tender.

In case of installing the equipment into the existing site, please submit site plans and drawings available.

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Date and place	Signature