Specifications

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CHM2401N_SVG

1. Electrical Service Conversion Label

Figure 27

Machines are equipped with an AC inverter drives requiring a

clean power supply, free from voltage spikes and surges. Use

voltage monitor to check incoming power.

Input Power Conditioning

The drive is suitable for direct connection to input power within

the rated voltage of the drive. Listed in Input Power Condition

are certain input power conditions which may cause component

damage or reduction in product life. If any of the conditions exist,

install one of the devices listed under the Possible Corrective Ac-

tion(s).

IMPORTANT: Only one device per branch circuit is re-

quired. It should be mounted closest to the branch and

sized to handle the total current of the branch circuit.

Input Power Condition Possible Corrective Action(s)

Low Line impedance [less than 1% line reactance] • Install Line Reactor

• Isolation Transformer

Greater than 120 kVA supply transformer

Line has power factor correction capacitors • Install Line Reactor

• Isolation Transformer

Line has frequent power interruptions

Line has intermittent noise spikes in excess of 6000V [light-

ning]

Phase to ground voltage exceeds 125% of normal line to line

voltage

• Remove MOV jumper to ground

• Install Isolation Transformer with grounded secondary [if

necessary]

Ungrounded distribution system

240V open delta configuration [stinger leg]* • Install Line Reactor

* For drives applied on an open delta with a middle phase grounded neutral system, the phase opposite the phase that is tapped in

the middle to the neutral or earth is referred to as the “stinger leg,” “high leg,” “red leg,” etc. This leg should be identified

throughout the system with red or orange tape on the wire at each connection point. The stinger leg should be connected to the

center Phase B on the reactor.

Table 26

Input Voltage Requirements

For voltages above or below listed specifications, contact your

power company or local electrician.

If machine is intended for four-wire service, a neutral leg must be

provided by power company.

If a delta supply system is used on a four-wire model, connect

high leg to L3.

IMPORTANT: Improper connections will result in equip-

ment damage and will void warranty.

Installation

Part No. F8429301ENR13