Uninterruptible Power Supplies PowerWave 3000T, Руководство пользователя

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UPS469-01-00 PowerWAVE 3000T User Manual Dated 05-04-13
4-7
4: Operation
4.4.2 Bypass (Off-line or ECO) mode
Figure 4.4 Line-Interactive (Bypass Mode)
When operating in the Bypass (ECO) mode the load is supplied from the bypass mains (
LINE 2
) via the
static
BYPASS
and in the event of a bypass mains failure the load is automatically transferred to the inverter
(On-Line mode) within 3 to 5 msec. The battery charger remains active in this mode.
Although this mode of operation offers a greater efficiency than the On-Line mode, it is recommended only if
the connected load can tolerate interruptions of 3 to 5 ms – which is the transfer time taken to change from
Bypass mode to On-Line mode.
4.4.3 Maintenance Bypass Mode
Figure 4.5 Maintenance Bypass Mode
Each module is fitted with a Maintenance Bypass switch (IA1) which, when closed, connects the UPS module
output terminals directly to the UPS bypass Mains supply. This facility enables a UPS module to be shut
down for maintenance or repair whilst maintaining the load on the raw (unprotected) bypass supply.
WARNING: The On-Line mode must always be used to provide maximum load protection.
LINE 1
LINE 2 BY PASS
INVERTER
BATTERY
LOAD
LED Colour
LINE 1 Green
LINE 2 Green
BY PASS Green
INVERTER OFF
BATTERY Green
MAINS LOAD
MAINTENANCE
BYPASS
UPS
Switch IA1