MGE UPS Systems Galaxy PW Measurement system, Voltage measurements, Current measurements

User’s Manual

measurement system

The display may be used to read a num- ber of input and output measurements made at different points in the system. See figure 18 .

■normal AC source 1

❏phase-to-phase voltages,

❏currents of the three phases,

❏frequency;

■bypass AC source 2

❏ phase-to-neutral voltage, ❏ phase-to-phase voltages, ❏ frequency,

❏ currents of the three phases;

■battery 3

❏ voltage;

❏ charge or discharge current;

❏ remaining battery time (for the UPS unit concerned);

❏ battery temperature;

■inverter output 4

❏frequency;

■ total load 6

❏phase-to-neutral voltage,

❏phase-to-phase voltages,

❏currents of the three phases,

❏frequency,

❏active and apparent power.

1	3	4	6
U - I - F	U - I	F	U - V - I - F - P
A		B
Q1			Q5N
1
	QF1
2		D
U - V - I - F		C
Q4S
2

Fig. 19

voltage measurements

These measurements may be accessed by pressing the "V" key 13 . The following data is displayed.

Note:

M1: normal AC source

M2: bypass AC source

current measurements

These measurements may be accessed by pressing the "A" key 14 . The following data is displayed.

Note:

CF: crest factor

power and frequency measurements

These measurements may be accessed by pressing the "W.HZ" key 16 . The fol- lowing data is displayed.

Note:

PF: power factor

RMS	M1	M2	LOAD	RMS	M2	LOAD
U12	----	----	----	V1	----	----
U23	----	----	----	V2	----	----
U31	----	----	----	V3	----	----
RMS	M1	M2	LOAD	FC-LOAD I-LOAD/I-NOM
I1	----	----	----	-.--	----	%
I2	----	----	----	-.--	----	%
I3	----	----	----	-.--	----	%
LOAD	KW	KVA	PL/PN	= --- %	FREQ.HZ
P1	----	----			M1	--.-
P2	----	----			M2	--.-
P3	----	----	FP.LOAD = -.-		INV --.-

Control-panel Display 19