Tripp Lite S3M20K-20K4T Owner's Manual

Loading ...

3. Installation and Wiring

3.8 External Protective Devices

For safety reasons, it is necessary to install an external circuit breaker at the input AC utility and to the battery.

3.8.1 External Battery

The UPS and its connected batteries are protected against the eects of over-current through a DC-compatible thermo-

magnetic circuit breaker located close to the battery.

3.8.2 UPS Output

Any external distribution board used for load distribution shall be tted with protective devices to avoid the risk of UPS

overload.

3.8.3 Over-Current Protection

CAUTION!

• Wiring must be performed by qualied professional personnel.

• Before wiring or making any electrical connection, ensure the power supplied to the input and output of the UPS is cut

o completely and the internal battery connectors are disconnected.

• When connecting the UPS to the utility AC power and bypass source, protective devices and 3-pole connectors

must be installed. The protective devices and 3-pole contactors must use approved components that meet safety

certications. The thermo-magnetic circuit breakers should be IEC 60947-2 trip curve C (normal). Refer below for

required protective devices:

10kVA UPS: 50A circuit breaker required.

15kVA UPS: 63A circuit breaker required.

20kVA UPS: 80A input circuit breaker required.

• When connecting the critical loads to the UPS, a listed certied breaker must be installed between them. Refer to the

below for the required breakers:

10kVA UPS: 50A input breaker required.

15kVA UPS: 63A input breaker required.

20kVA UPS: 80A input breaker required.

• Check that the size, diameter, phase and polarity of each cable connecting to the UPS is correct. For the specications

of input/output cables, refer to the table in section 3.9.2 UPS Internal Battery Cable Connectors.

3.9 Internal Battery Installation Procedure for UPS Models with

No Internal Batteries (-NIB Models)

DANGER! LETHAL HIGH-VOLTAGE HAZARD!

Even if not connected to the UPS system, there is potentially fatal high voltage inside the battery.

Batteryconnectionsshouldonlybeperformedbyqualiedservicepersonal,followingall

precautions listed in the service manual, following local electrical codes.

Loading ...

Tripp Lite S3M20K-20K4T 3-Phase 208V UPS + Input Isolation Transformer Kit - 480V Delta to 208V Wye, 20kVA/kW, 3 Internal Strings