9907-173 Load Sharing Module, China 9907-173 Load Sharing Module Manufacturers, Suppliers, Factory

Overview

Place of Origin:	USA
Brand Name:	Woodward
Model Number:	9907-173
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Specifications

Model	9907-173
Product Type	Load Sharing Module
Dimensions	27.3 × 21.3 × 5.8 cm
Weight	1.48 kg
Operating Temperature	–40 to +70 °C (–40 to +158 °F)
Salt Fog Test	5% NaCl, 35 °C, 48 hrs wet / 48 hrs dry
Humidity Test	95% RH, 65 °C non-condensing, 5 cycles (24 hr/cycle)
Vibration Test	Swept sine 4 G, 5 mm, 5–2000 Hz, min 3 hr/axis, 4×30 min resonant dwells
Shock Test	40 G, 11 ms sawtooth pulse
Overvoltage Category	Category III
Pollution Degree	Pollution Degree 2
Power Supply Source	From PT connections (Load Sharing Module circuitry)
Power Consumption	Approx. 10 W
PT Input Voltage (3-phase)	100–120 or 200–240 Vac line-to-line, 50–400 Hz
PT Input Burden	1.6 W per phase at 240 Vac / 0.4 W per phase at 120 Vac
CT Input Current (3-phase)	3–7 Arms full load
CT Input Burden	0.1 VA per phase at full load
Load Sharing Input	0–3 Vdc into 25 kΩ impedance (isochronous mode)
Sync Input	Compatible with Woodward SPM-A synchronizer (0.5% speed change per volt)
Droop Switch Connection	Series with auxiliary breaker contact (terminals 13–14)
Droop Mode Condition	Activated when droop switch or auxiliary breaker is open
Load Signal Output	DC signal proportional to total real current
Load Gain Adjustment	0.86 to 2.0 Vdc/Arms
Analog Output Range	±3 Vdc
Analog Output Zero Error	+0.0 ±0.05 Vdc
Droop Adjustment Range	0 to 10% speed reduction (no load to full load)

Description

The Woodward 9907-173 is a load sharing module made for use with engines equipped with speed controls that accept a ±3 Vdc speed setting. In addition, the module provides isochronous and droop load-sharing capability for engines in generator set applications.

Applications

Power Plants: Balance active power among parallel generators.

Diesel Power Plants: Distribute load among multiple diesel generator sets.

Petrochemical Plants: Control gas turbine load sharing in island operation.

Shipbuilding Industry: Manage parallel operation of marine generators.

Steel Plant Power Stations: Stabilize power output during grid connection.

Location Considerations

Consider these requirements when selecting the mounting location:

Adequate ventilation for cooling

Space for servicing and repair

Protection from direct exposure to water or to a condensation-prone environment

Protection from high-voltage or high-current devices, or devices which produce electromagnetic interference

Protection from excessive vibration

An ambient operating temperature range of –40 to +70 °C (–40 to +158 °F)

Droop Operation

In droop operation, a portion of the load signal voltage is fed to the controller circuit. This voltage is used by the comparator circuit to reduce the control output by a percentage determined by the DROOP potentiometer. The output is reduced, and the speed control reduces engine power output according to the desired droop percentage.

When a generator set using the Load Sharing Module is paralleled in droop with other generator sets, the common load signal on the paralleling lines is not used. The frequency of the generator set will therefore vary with load, so it must be determined by a different means.

FAQ

Q: What is the operating temperature range of 9907-173?
A: The operating temperature range is -40 to +70°C (-40 to +158°F).

Q: What is the operating power consumption of 9907-173?
A: The operating power consumption is approximately 10 W.

Q: What are the three-phase PT input voltage and frequency of 9907-173?
A: The line voltage is 100–120 or 200–240 Vac, with a frequency range of 50–400 Hz.

Q: What is the three-phase CT input current of 9907-173?
A: The full-load input current is 3–7 Arms.

Q: What is the shock resistance of 9907-173?
A: It can withstand 40 G peak, 11 ms sawtooth pulse shock testing.