Galaxy VL UPS – Installation PDF
990-91380K-001

Connect the Signal Cables from Switchgear and Third-Party Auxiliary Products

Overview of Signal Connection Terminals in the UPS

NOTE: Route the signal cables separately from the power cables and route the Class 2/SELV cables separately from the non-Class 2/non-SELV cables.
  1. Install the temperature sensor provided with the UPS in the battery solution. In battery cabinets, install the temperature sensor in the top corner of the battery cabinet.
    WARNING
    Hazard of fire
    Position the temperature sensor as described to ensure correct temperature measurements.
    Failure to follow these instructions can result in death, serious injury, or equipment damage.
  2. Route the battery temperature sensor cables from the battery solution to the UPS and connect as shown.
    NOTE: Two temperature sensors are provided with the UPS.
    NOTE: The battery temperature sensor cables are considered Class 2/SELV. Class 2/SELV circuits must be isolated from the primary circuitry.
  3. Connect signal cables from the breaker indicator lights in your switchgear to terminal J6618 in the top of the UPS. If an external supply is used, remove jumper from J6618 pin 8 and 9.
    NOTE: The breaker indicator light circuit is considered Class 2/SELV. Class 2/SELV circuits must be isolated from the primary circuitry. Do not connect any circuit to the breaker indicator light terminals unless it can be confirmed that the circuit is Class 2/SELV.
  4. Connect the signal cables from the battery breaker(s) in your battery solution for shunt trip or undervoltage (UV) trip connection to the UPS. Follow the illustration for connection with internal or external 24 VDC supply. The UPS can connect to and monitor up to four battery breakers.
    1. Connect battery breaker 1 to terminal J8305 in the UPS.
    2. Connect battery breaker 2 to terminal J8306 in the UPS.
    3. Connect battery breaker 3 to terminal J8307 in the UPS.
    4. Connect battery breaker 4 to terminal J8308 in the UPS.

    Battery Breaker Trip Connection with Internal 24 VDC Supply

    Battery Breaker Trip Connection with External 24 VDC Supply

    Supported Shunt

    Voltage (V) Current (A) Time (ms) Temperature Recommended cable size*
    IEC UL/NEC
    24 1.6 Continuous 20 °C (68 °F) 0.5 mm2 copper 20 AWG copper
    24 10 1300 20 °C (68 °F) 1.5 mm2 copper 16 AWG copper
    24 20 200 20 °C (68 °F) 2.5 mm2 copper 13 AWG copper
    24 30 60 20 °C (68 °F) 4 mm2 copper 11 AWG copper

    The cable supplying the shunt trip shall be a jacket cable and rated for 600 VAC. The specifications and recommendations of the shunt trip manufacturer must always be considered when selecting the cable.

  5. Connect signal cables from AUX switches in your switchgear to the UPS.
    Terminal number Function Connection
    J8303, 1-2 UOB_RED (redundant AUX switch in unit output breaker) Connect to redundant AUX switch in unit output breaker UOB.
    J8303, 3-4 Grid interactive UPS feature: Force UPS into battery operation Connect to normally open (NO) input contact used for grid interactive UPS feature (fast frequency response). Contact Schneider Electric for details and setup of this feature.
    J8303, 5-6 SIB (system isolation breaker) Connect to normally open (NO) AUX switch in system isolation breaker SIB for parallel system. SIB must contain an AUX switch for each connected UPS.
    J8304, 1-2 BB1 (battery breaker 1) Connect to normally open (NO) AUX switch in battery breaker number 1.
    J8304, 3-4 BB2 (battery breaker 2) Connect to normally open (NO) AUX switch in battery breaker number 2.
    J8304, 5-6 BB3 (battery breaker 3) Connect to normally open (NO) AUX switch in battery breaker number 3.
    J8304, 7-8 BB4 (battery breaker 4) Connect to normally open (NO) AUX switch in battery breaker number 4.
    J8302, 7-8 UOB (unit output breaker) Connect to normally open (NO) AUX switch in unit output breaker UOB.
    J8302, 3-4 SSIB (static switch input breaker) Connect to normally open (NO) AUX switch in static switch input breaker SSIB. SSIB must contain an AUX switch for each connected UPS.
    J8302, 1-2 UIB (unit input breaker) Connect to normally open (NO) AUX switch in unit input breaker UIB. UIB must contain an AUX switch for each connected UPS.
    J8302, 5-6 MBB (maintenance bypass breaker) Connect to normally closed (NC) AUX switch in maintenance bypass breaker MBB. MBB must contain an AUX switch for each connected UPS.
    J8300, 1-5 EXT BF (external backfeed breaker) See Backfeed Protection.
    J8301, 1-2 EXT BF RED (redundant power supply for external backfeed breaker) See Backfeed Protection.
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