APC MW II manual Symmetra MW

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Earthing arrangements and protective conductors - Symmetra MW in "TN-installation"C-S

Symmetra MW II

Service Entrance

Residual current protective device can not be used.

Switchgear

Q5

See:	IEC 60364-4-41	§ 413.1.3
	Q3				( PDU )
					Residual current protective
				Current Sense	device can be used.
External SSW-Bypass				Residual
Bypass - input		Bypass - output	Q6
L1		L1
L2		L2
L3		L3
Main Protective Earthing Terminal
PE		PE	Q4
					PE
	SymmetraMW

1200 kW 3 × 400/230 V Installation

PEN

Residual Current Sense

PEN

Q1

ConductorEarthing

Protective

PE

Mains - input		i	Delta		UPS - output
			Inverter
L1			i		L1
L2		i			L2
L3					L3
				u	u
filter
					M
Common-mode
					Main
					inverter
					u
N					N
E
				Main Protective Earthing Terminal
PE					PE
+	-	+	-
Battery 1			Battery 2

- 990-1979E-001

With reference to:

IEC 60364-4-41 § 413.1.3.1

Suitable earth electrode

with reference to IEC 60364-5-55 § 551.4.2

Battery
breaker
box Q7	Q8
PE
Battery
rack
Battery 1	Battery 2

PE