Load Bank Selection and Sizing Course

Course Description:

This course is intended to prepare the target persons with the ability to perform Load Bank Sizing Calculations.

The targeted Persons:

Design engineers, new graduate engineers, under graduate engineering students.


Skills Development:


On completion of this course the target person will be able to:

• Know the Load Bank Types, Applications & Components.

• Know Applicable standards for Using load banks with emergency power generating systems,

• Know How to choose the right load bank Resistive or Combined,
• Know the Load Bank Essential Circuits,
• Know the Specifications and installation details of the Load Bank,
• Know How to perform the selection and sizing calculations for Load Bank,
• Know the standard procedures for Load Bank Testing.

Course Outline:

1	What is a Load Bank?
2	Why we don’t use the actual facility loads to test the power source?
3	Wet Stacking Problem.
4	Load Bank Applications.
5	Applicable standards for Using load banks with emergency power generating systems.
6	Types of Load Banks
6.1	First: According to the Load Element	A-Resistive Load Element,
		B- Reactive Load Element,
		C- Combined (resistive/reactive) Load Element.
		- Comparison between resistive and combined load banks
		- How to choose the right load bank Resistive or Combined?
6.2	Second: According To Portability,	A- Small Portable,
		B- Rack-Mounted Portable,
		C- Large Portable,
		D- Stationary,
		E- Stationary – Radiator/duct Mount,
		F- Trailer.
6.3	Third: According To Cooling Method,	A- Natural Convection Air,
		B- Integral Fan Forced Air,
		C- Radiator Airflow,
		D- Water Flow.
6.4	Fourth: According To Method of Control,	A- Mechanical Control,
		B- Electronic Control (Digital Control).
6.5	Fifth: According To Operating Mode,	A- Automatic operating mode,
		B- Manual operating mode:
		B.1- Local control
		B.2- Remote control
6.6	Sixth: According To Application,
6.7	Seventh: According to no. of Load Steps,	A- Single Block
		B- Multiple Steps
6.8	Eighth: According to Load Bank Voltage and Frequency.	A- Single or multiple Frequencies,
		B- Single or multiple voltages,
		C- Low or medium voltage
7	Load Bank basic Components:	1- Enclosure,
		2- Load elements,
		3- Controls & Instrumentation,
		4- Cooling system,
		5- System Protections,
		6- Load and supply Connectors.
8	The load bank essential circuits:	1- Control Circuit,
		2- Cooling Circuit,
		3- Load Element Circuit.
		The Relationship of the Control, Cooling, and Load Element Circuits.
9	the Load Bank Power Connections:	a- Three Phase Connection
		b- Making connections for single-phase operation
		c- Making connection for Using Multiple Load Banks
10	- an example for Specification, Installation details, Power and Control Wiring Diagrams for A Load Bank.
11	The (14) Steps for Selection/Calculation of the Proper Load Bank:	Step#1: Assign the Proper Load Bank Type Based on the Type of the Application
		Step#2: Assign the Load Bank Type Based on the Power Source Voltage and Frequency
		Step#3: Assign The Load Bank’s Additional Features Based on Your Needs
		Step#4: Assign the Load Bank Type Based on the Power Source Capacity
		Step#5: Calculate the Load Bank Capacity Based on the Power Source Capacity and Load Bank Type
		Step#6: Assign the Required No. of Steps and Load Step Resolution
		Step#7: Derate the Load Bank Capacity from Step#5 In Case Of Testing Power Sources with Lower Voltage Rating Than That of the Load Bank
		Step#8: Derate the Load Bank Capacity Based on the Altitude and Ambient Temperature of the Installation Location
		Step#9: Assign the Load Bank Type Based On the Available Installation Form
		Step#10: Assign the Cooling Methods for Load Bank based on Load Bank Capacity and Space Limitations
		Step#11: Assign the Method of Control (Mechanical or Digital / Local or Remote/ Manual or Load Shed Control) For the Required Load Bank
		Step#12: Assign Blower Power Source (Internal Or External)
		Step#13: Assign Enclosure Type for the Required Load Bank Based On Installation Location / Space Limitations
		Step#14: Assign the Required Load and Supply Connectors
12	Standard Load Bank Testing Procedure	First: Generator Load Testing Manually
		Second: Testing A Load Bank With Autotest Software