PowerTec 2000C Instruction Manual page 2

This notice is required by Underwriters Laboratories.
The following notice applies to POWERTEC models 1000, 1000A, 1000AR, 1000ASR,
2000C, 2000CR, 2000CSR:
This device is rated for use on a circuit capable of delivering not more than 5000 rms symmetrical amperes, 500
volts maximum.
The following notice applies to POWERTEC models 3000C, 3000CR, 3000CSR, 3500,
3500R, 3500CSR, 4000, 4000R,4500, 4500R operating at 230VAC:
This device is rated for use on a circuit capable of delivering not more than 10,000 rms symmetrical amperes, 500
volts maximum.
The following notice applies to POWERTEC models 3000C, 3000CR, 3000CSR, 3500,
3500R, 3500CSR, 4000, 4000R,4500, 4500R operating at 380 or 480 VAC:
This device is rated for use on a circuit capable of delivering not more than 18,000 rms symmetrical amperes, 500
volts maximum.
An important consideration when installing the POWERTEC Brushless DC motor and drive is how the motor is to be
protected while in service. The following is a list of the protections built into your POWERTEC system.
1. POWERTEC motors include an internal thermal switch which provides protection for the motor windings. In
order to properly protect the motor, this switch MUST be connected to the motor controller as indicated in the
drive instruction manual. The action of the switch opening in the circuit must be such that the drive is shut off
before damaging temperatures are reached.
2. POWERTEC provides current limiting protection in the drive. This protection is adjustable from 0 to 150%
of the motor controller output current.
3. POWERTEC provides instantaneous overcurrent protection which will shut off the controller if peak currents
greater than 300% of the RMS rating occur.
4. POWERTEC provides sub-cycle time, fast clearing fuses in the three AC input legs to the drive. An input circuit
breaker may or may not be provided, depending on the options selected at the time of purchase. If a breaker is
not purchased with the drive, the user must supply a means of power disconnection in order to meet the
requirements of the National Electric Code.
5. POWERTEC does not provide running overload protection as described in Underwriter's Laboratories®
Industrial Control Equipment Specification 508. The user is responsible to comply with local codes and
practices. If it is determined that additional protection must be installed, the action of the protection circuit must
be to shut off the motor controller.
© copyright 1992, 1996 by Powertec Industrial
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OTOR ROTECTION
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