Which synchronizing tolerances identify WOODWARD 9905-003?

The exact option chart lists 50/60 Hz, a +/-10-degree phase window and 5% voltage matching. Other SPM-A part numbers have different combinations.

Does CHECK mode on WOODWARD 9905-003 close the breaker?

No. CHECK permits normal synchronizing and voltage matching but inhibits the breaker-closure signal. RUN is a separate operating mode.

How is dwell time selected on WOODWARD 9905-003?

The internal four-position switch selects 1/8, 1/4, 1/2 or 1 second; the factory setting is 1/2 second. All voltage inputs must be turned off before opening the cover to change it.

How should the WOODWARD 9905-003 speed-bias output be chosen?

Use the high-impedance output for the documented 2301 arrangement, the low-impedance output for the listed compatible load-sharing controls, or the EPG output for EPG controls without load sensing. Follow the relevant wiring diagram.

Can WOODWARD 9905-003 synchronize one isolated generator bus to another bus?

The manual describes bus-to-bus synchronization of up to seven generators already operating in parallel on the isolated bus. The control-specific resistor and wiring requirements still apply.

Are the WOODWARD 9905-003 relay ratings identical for resistive and inductive loads?

No. At 28 V DC the ratings are 10 A resistive and 6 A inductive. At 120 V AC, 50/60 Hz, they are 3 A resistive and 2 A inductive.

What input supply is specified for WOODWARD 9905-003?

The specification lists bus and generator inputs of 115 or 230 V AC rms, 50/60 Hz, with +/-10% voltage tolerance. Maximum power consumption is 5 W.

What does the initial bench test establish for WOODWARD 9905-003?

The manual states that the bench test indicates basic operation only and is not a basis for adjustment. Complete the required calibration and checkout sequence for the installed system.

WOODWARD 9905-003 SPM-A Synchronizer

Name: 9905-003
Brand: WOODWARD
SKU: 9905-003

9905-003

SPM-A synchronizer with voltage matching

In Stock

Ships by Friday, October 2

Fast Shipping Available

Technical specifications for 9905-003

Manufacturer:

WOODWARD

Product Category:

Gas turbine control

Spare Part Number:

9905-003

Estimated shipping dimensions:

22x11.5x7cm

Weight:

0.5 kg

Tariff Code:

8537101190

Counliy of origin:

USA

Product family:

SPM-A

Frequency:

50/60 Hz

Phase matching window:

+/-10 degrees

Voltage matching tolerance:

Bus / generator input:

115 or 230 V AC rms

Input voltage tolerance:

+/-10%

Maximum power consumption:

5 W

Operating modes:

RUN, CHECK, PERMISSIVE, OFF

Match-up time selections:

0.125, 0.25, 0.5 or 1 s

Factory dwell-time setting:

0.5 s

Breaker-close contact:

Normally open

Breaker-close command duration:

Approximately 1 s

Resistive contact rating, DC:

10 A at 28 V DC

Resistive contact rating, AC:

3 A at 120 V AC, 50/60 Hz

Inductive contact rating, DC:

6 A at 28 V DC

Inductive contact rating, AC:

2 A at 120 V AC, 50/60 Hz

Synchronizer reset:

Automatic

Speed-bias interfaces:

High impedance, low impedance and EPG

Maximum operating temperature range:

-45 to +70 deg C

Optimal operating temperature range:

+10 to +30 deg C

Information

Overview Manuals Common Applications Product Precautions

WOODWARD 9905-003 is an SPM-A synchronizer for matching a generator to another generator or utility bus before paralleling. This 50/60 Hz version uses a +/-10-degree phase window and 5% voltage matching.

Matches generator phase and frequency before paralleling
Provides voltage raise/lower commands to the regulator
Permits a synchronizing check without breaker closure
Supports governor-specific speed-bias connections

Install the synchronizer with the switchgear and match its bus/generator inputs and speed-bias interface to the plant wiring drawing. Qualified personnel must complete the ordered calibration and checkout procedure before enabling breaker closure.

Important Notice: Verify WOODWARD 9905-003 rather than another SPM-A option: the phase window and voltage tolerance are part-number-specific. Isolate voltage inputs and observe the manufacturer's electrical and ESD precautions before work.

Apter Power WOODWARD 9905-003 Manuals and Guides

Apter Power WOODWARD 9905-003 Product and System Technical Reference PDF WOODWARD 9905-003 Official Manual PDF

The first document presents model-specific technical data and engineering questions. The second is the manufacturer's original manual covering installation, configuration and commissioning.

Generator-to-bus paralleling

Match an offline generator to the utility or generator bus before enabling the breaker-close command.

Voltage-regulator coordination

Use the voltage-matching version's raise/lower contact commands with the installed voltage regulator.

Bus-to-bus synchronization

Apply the documented arrangement for an isolated bus with up to seven parallel generators.

Synchronizing checkout

Use CHECK mode to observe synchronizing and voltage matching without a breaker-close command.

Read the applicable WOODWARD installation instructions before work. Verify WOODWARD 9905-003, the installed system and the configured interfaces before commissioning.

Confirm part number 9905-003 and its 50/60 Hz, +/-10-degree and 5% option values.

Isolate all synchronizer voltage inputs before removing the cover or changing internal dwell-time switches.

Wire bus and generator inputs for the installed voltage using the manufacturer's plant diagram.

Choose the speed-bias output that matches the actual governor or load-sharing control.

Connect the cable shield at the control end only as specified for the speed-bias wiring.

Keep the mode switch OFF while other engine-control units are being adjusted.

Use CHECK mode for synchronizing observation when breaker closure must remain inhibited.

Protect the unit from water and condensation; complete the specified calibration and plant acceptance checks before RUN operation.

FAQS

Which synchronizing tolerances identify WOODWARD 9905-003?

The exact option chart lists 50/60 Hz, a +/-10-degree phase window and 5% voltage matching. Other SPM-A part numbers have different combinations.
Does CHECK mode on WOODWARD 9905-003 close the breaker?

No. CHECK permits normal synchronizing and voltage matching but inhibits the breaker-closure signal. RUN is a separate operating mode.
How is dwell time selected on WOODWARD 9905-003?

The internal four-position switch selects 1/8, 1/4, 1/2 or 1 second; the factory setting is 1/2 second. All voltage inputs must be turned off before opening the cover to change it.
How should the WOODWARD 9905-003 speed-bias output be chosen?

Use the high-impedance output for the documented 2301 arrangement, the low-impedance output for the listed compatible load-sharing controls, or the EPG output for EPG controls without load sensing. Follow the relevant wiring diagram.
Can WOODWARD 9905-003 synchronize one isolated generator bus to another bus?

The manual describes bus-to-bus synchronization of up to seven generators already operating in parallel on the isolated bus. The control-specific resistor and wiring requirements still apply.
Are the WOODWARD 9905-003 relay ratings identical for resistive and inductive loads?

No. At 28 V DC the ratings are 10 A resistive and 6 A inductive. At 120 V AC, 50/60 Hz, they are 3 A resistive and 2 A inductive.
What input supply is specified for WOODWARD 9905-003?

The specification lists bus and generator inputs of 115 or 230 V AC rms, 50/60 Hz, with +/-10% voltage tolerance. Maximum power consumption is 5 W.
What does the initial bench test establish for WOODWARD 9905-003?

The manual states that the bench test indicates basic operation only and is not a basis for adjustment. Complete the required calibration and checkout sequence for the installed system.

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9905-003

Product Describe：

Ask our team:

Warranty Policy

Return Notice

Shipping Method

Parts Availability

How to order

Technical specifications for 9905-003

Technical specifications for 9905-003

Information

Information

Technical notes

Technical notes

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