Additional Information for UL Approved Installations
The drive is designed to meet the UL requirements. In order to ensure full compliance, the following must be fully observed.
Input Power Supply Requirements | ||||
|---|---|---|---|---|
Supply Voltage | 380 – 480 Volts for 400 Volt rated units, + / - 10% variation allowed, Maximum 500 Volts RMS | |||
Imbalance | Maximum 3% voltage variation between phase – phase voltages allowed | |||
All drives have phase imbalance monitoring. A phase imbalance of > 3% will result in the drive tripping. For input supplies which have supply imbalance greater than 3% (typically the Indian sub- continent & parts of Asia Pacific including China) Invertek Drives recommends the installation of input line reactors. | ||||
Frequency | 50 – 60Hz + / - 5% Variation | |||
Short Circuit Capacity | Voltage Rating | Min kW (HP) | Max kW (HP) | Maximum supply short-circuit current |
230V/400V | 0.75 (1) | 37 (50) | 100kA rms (AC) | |
All the drives in the above table are suitable for use on a circuit capable of delivering not more than the above specified maximum short-circuit Amperes symmetrical with the specified maximum supply voltage. | ||||
Incoming power supply connection must be according to section 9.3.1 | ||||
UL Listed ring terminals / lugs must be used for all bus bar and grounding connections | ||||
All drives are intended for indoor installation within controlled environments which meet the condition limits shown in section 7.3 and 0 | ||||
Branch circuit protection must be installed according to the relevant national codes. Fuse ratings and types are shown in section 9.3.2 | ||||
Suitable Power and motor cables should be selected according to the data shown in section 9.3.2 | ||||
Power cable connections and tightening torques are shown in section 9.3.1 | ||||
The drive provides motor overload protection in accordance with the National Electrical Code (US).
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