American Power Conversion SYMF800KH manual Required Breaker Settings 400 V Systems

Required Breaker Settings (400 V Systems)

Contact APC Application Team for Required Breaker Settings in 380 V and 415 V systems.

Note

The Symmetra® MW is a fault-tolerant system capable of handling and surviving overloads and internal/external faults. The overload performances and fault clearings are possible when the system meets specified minimum requirements for breaker settings. The settings are specified in the tables below, but some of them can also be found in the Electrical Specification section. The settings are all minimum settings and may not result in a drop-out.

See separate guide on parallel operation for information on required breaker settings in parallel systems.

See also

Input and upstream breakers — minimum settings

Q1, Q5, and any upstream breaker

Duration [S]	Current [A]	Total load [%]	Event/Operation
< 0.005	22 kA	--	Internal fault clearing
∞	1466*	127	Overload on-line
∞	1195	100	On-line
∞	1315	110	On-line+ Max. Battery
			charge
	* Only applicable to Q1

Output and downstream breakers -— minimum settings

Q2, Q4, Q6, and any downstream breaker

Duration [S]	Current [A]	Total load [%]	Event/Operation
< 0.005	22 kA	--	Internal fault clearing.
60	2406*	200	Overload on-line
600	1504*	125	Overload on-line
∞	1155	100	On-line

* Only applciable to Q2 and Q4

Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D 31