Back Panel / Connection Detailed Description; Power Connection - Lambda Labs KW-18 Manual

Table of Contents

Lambda Labs - Professional Acoustics

5. Back Panel / Connection Detailed Description

KW-18 uses three pieces of 20A Neutrik PowerCON Connectors to provide enough input power for its extreme output power

capability. Use the provided Power cable or any (3 x 1.5mm2 for max cable length of 1.5m or 3x 2.5mm2 for a cable length

up to 10m) power cable equipped with Neutrik PowerCON connector!

Always use power with Protective Earth (PE) having a sufficiently low impedance! Use 16A Type „C" Circuit Breakers for

230V operation!

The unit must be grounded to the PE of the Power Network thru all three Power connectors! In the case of an Off-

Grid use (for example using a Power Generator), a proper grounding network must be provided to the PE pins of the Power

input connectors of the unit!

PE impedance should be always kept low! The use of a GFCI unit is recommended! In the case of single phase power line

application, use a common single phase GFCI! In the case of three phase power line application, use a single three-phase

GFCI!

KW-18 might be used from a single, two or even 3 phase power! In every case, all three Neutrik PowerCON Connector

has to carry Phase, Neutral, and PE! A missing Neutral line might cause damage to the KW-18!

To ensure the full output power capability, the amplifier needs to run with all 3 connectors connected and powered using

16A Type "C" Circuit Breakers. In the case of lower power use it could be operated however using only two of the Neutrik

Powercon connectors and as such, powered from only 2x 16A Type "C" Circuit Breakers.

NOTE:The Unit can not start when only one of the Powercon connectors is used!

NOTE:The KW-18 can only work from voltages of 90V AC – 255V AC 50-60Hz! Operation from DC Voltage is not possible!

An input voltage higher than 255V AC RMS is not permitted and might cause damage to the KW-18!

In the case of 110V power line we strongly recommend the use of „Delta" circuit – meaning, that each Neutrik PowerCON

Connector carries two Phase and one PE line (in this special case Neutral Line is not used!). This would give 190V effective

AC for all of the three Power Inputs on the KW-18. For this operation we recommend 20A Type „C" Circuit Breakers!

Using the KW-18 from single, two or three phase 110Vac Line(s) with 20A Type „C" Circuit Breakers could limit the

maximum achievable output power! All of our guidelines for using additional GFCI applies also for all types of 110V AC

operations!

www.lambda-labs.com

5.1 Figure 1: Power Connectors

NOTE: Special local electrical safety compliance regulation may apply!

! 1 1

KW-18 Amplifier Manual

Table of Contents