Electrical Installation, Power Cabling | Emerson 400KVA, U/300/S/6P

Chapter 3 Electrical Installation

This chapter introduces the electrical installation of the HIPULSE U UPS, including the procedures or methods for power cabling and control cabling, and the distance from floor to connection point.

The UPS requires both power cabling and control cabling once it has been mechanically installed. All control cables, whether screened or not, should be run separate from the power cables in metal conduits or metal ducts which are electrically bonded to the metalwork of the cabinets to which they are connected.

3.1 Power Cabling

Warning

BEFORE CABLING UP THE UPS, ENSURE THAT YOU ARE AWARE OF THE LOCATION AND OPERATION OF THE EXTERNAL ISOLATORS THAT CONNECT THE UPS INPUT/BYPASS SUPPLY TO THE MAINS DISTRIBUTION PANEL. CHECK THAT THESE SUPPLIES ARE ELECTRICALLY ISOLATED, AND POST ANY NECESSARY Warning SIGNS TO PREVENT THEIR INADVERTENT OPERATION.

For cable entry, refer to 2.3.5 Cable Entry.

3.1.1 System Configuration

The power cables of the system must be size with respect to the following description:

Module input cables

The input cables must be sized for the maximum input current, including the maximum battery recharge current, given in the Table 3-1, with respect to the module rating and the input AC voltage.

Module bypass and output cables

The bypass and output cables must be sized for the nominal output current, given in the Table 3-1, with respect to the module rating and the output AC voltage.

Battery cables

Each UPS module has its own battery which is connected using two cables, one positive and one negative. The battery cables must be sized for the battery discharge current at the end-of-discharge voltage, as given in Table 3-1 with respect to the module rating.

3.1.2 Cable Rating

The power cables can be sized to suit the UPS module rating according to Table 3-1.

Table 3-1 UPS module power cable rating

				Nominal current: Amps						Busbar stud size
	UPS rating	Input mains with full battery recharge			Bypass/output at full load			Battery at	Input/output		Battery	Torque
	(kVA)	(subtract 5% for 12-pulse)			Bypass/output at full load			minimum battery	cables		Battery	Torque
	(kVA)	(subtract 5% for 12-pulse)						minimum battery	cables		cables	(Nm)
		380V	400V	415V	380V	400V	415V	voltage (400Vac)*	Bolt	Ø

160		341	324	312	243	231	222	464	M10	11	M10 bolt	26

200		426	405	390	304	289	278	580	M10	11	M10 bolt	26

300		634	602	572	456	434	413	870	M12	13	M12 bolt	50

400		848	803	772	607	578	556	1160	M12	13	M12 bolt	50

Note*: Maximum battery discharge current at 380Vac supply increases by 3%, and for a 415Vac supply decreases by 3%

HIPULSE U UPS Single Module And “1+N” (Expandable) 160/200/300/400kVA User Manual