PROLiNK MASTER II Series User Guide

2
1-4. Connection Warning
• There is no standard feedback protection inside the UPS. However, there is a relay at the Input to cut
the voltage off line and when neutral it is still connected to the UPS.
Input relay diagram Relay diagram Inputs for Dual Input Models
• This UPS must be connected to the TN
grounding
system.
• The power input for this unit should be rated three-phase according to the nameplate of the equipment.
It must also be properly grounded.
• The use of this equipment in medical instruments of any life support equipment where the failure of this
equipment could reasonably be expected to cause the failure of the life support equipment or
significantly affect its safety or effectiveness is not recommended. Do not use this equipment if there is a
flammable mixture with air, oxygen, or nitrous oxide.
• Connect the UPS ground terminal to the earth electrode conductor.
• In accordance with the EN-IEC 62040-1 safety standard, the installation must be equipped with a
《Backfeed Protection》system, e.g. a contactor, which will prevent the appearance of harmful voltage
or energy on the input power source during a power interruption (follow the wiring diagram «Backfeed
Protection» depending on whether the equipment uses a signal or a three-phase input).
There should be no derivatives in the line switching from « Feedback Protection » to the UPS, as
safety standards will be violated.
• Warning labels should be placed on all main power switches installed at a place away from the unit to
notify electrical maintenance personnel of the presence of UPS in the circuit. The label will contain the
following text or equivalent:
1- 5 . Operation
Do not disconnect grounding/earthing conductor cables on UPS or cable terminals
building under any circumstances.
The UPS system displays its own internal current source (battery). UPS output socket or the
output terminal block may be power-supplied even if the UPS system is not connected to the
cable electricity/building electricity. ( only for standard model)
Main
Input
Input Rly
UPS
L1
L2
L3
N
Main
Input
Input Rly
UPS
L1
L2
L3
N
Bypass
Input
Input Rly
L1
L2
L3
N
WARNING
HIGH LEAKAGE CURRENT
EARTH CONNECTION ESSENTIAL
BEFORE CONNECTING SUPPLY
Before working on this circuit
- Isolating the Uninterruptible Power Supply (UPS)
- Then check the Hazardous Voltage between all terminals including the protected
ground
Risk of Voltage Feedback

PROLiNK MASTER II Series Specifications

General

Brand	PROLiNK
Model	MASTER II Series
Category	UPS
Language	English