LEGRAND Daker DK 4.5-6 kVA, Daker DK 10 kVA Parallel Installation Quick Start
®
Daker DK 4.5-10 kVA
Parallel installation quick start
Part. LE08927AA-09/15-01 GF
Daker DK 4.5-10 kVA
®
ENGLISH 3
UK
2
Daker DK 4.5-10 kVA
Index
Introduction 2
1 Important Safety Instructions 2
2 Parallel system installation 3
3 Single Unit Check 5
4 Parallel Setting 7
4 Parallel Mode Start up 8
5 Trouble Shooting 9
3
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Introduction
This document is a reference guide to install the Daker DK UPS 4,5-10kVA in parallel for N+1
redundancy operation. The parallel installation and configuration procedure is divided in 4 phases :
Parallel system installation – To physically connect each unit.
Single Unit check – To verify and confirm that each unit works properly with the correct
parameters and output voltage
Parallel Setting – To setup each units’ parameters to work in parallel mode.
Parallel Mode Start up – To verify that the parallel system works normally.
1 Important Safety Instructions
• Only qualified and trained electricians are allowed to install the UPSs in single unit or parallel
systems.
• Please read the Installation guide carefully before installing these UPSs to avoid electrical
hazards or damages to the UPS and the loads connected.
• To prevent potential leakage current hazard, ensure that the AC main supply is securely grounded.
• Please note that the Parallel function of the UPS can be enabled only in “Normal Mode” operation.
• Before to set a parallel installation, ensure that the output voltage tolerance for each UPS at
zero-load condition is less than 0.5Vac.Please consult your authorized dealer if any of the UPS
output voltage has the tolerance over 0.5Vac.
• Ensure that the communication cables plugged into the UPS RJ45 connectors are connected
securely to avoid damage to both the UPS and the output devices.
• Ensure that two and only two UPS units of the parallel system have the terminal resistors on the
rear set in “On” position.
• Only UPS with the same rating and type can be installed in parallel.
• Please ensure to add a 40Arms/250Vac and 30Arms/250Vac NFB(Non-fuse Breaker)at the input
and output of each UPS respectively.
4
Daker DK 4.5-10 kVA
2 Parallel system installation
Accessories
The following accessories (included in the parallel kit) are requested to install the UPS in parallel mode.
ACCESSORIES DESCRIPTION
Standard cat5 cable
C1
C2
F1
• The design of the air flow for the convertible UPS is to flow in from the front ventilation holes
to the rear ventilation holes.
It is recommended to leave at least 30 cm around the UPS and Battery bank to allow good
ventilation conditions.
Please refer to the UPS manual for the detailed installation guide.
• To reduce noise interference do not cross or mix input , output, and battery cables.
• Please install the communication wires for parallel and control signal functions (including
cat5, serial, usb and EPO cables) keeping them away from input/output and battery cables.
• To prevent potential leakage current hazard, ensure that the AC main supply is securely
grounded.
• Please refer to the single UPS input/output current specifications and recommended conduc-
tors listed below:
AC input and output
with Rj45 connector
(max length: 1050mm)
Standard cat5 cable
with Rj45 connector
(max length: 1900)
Bracket to secure
C1 and C2 to the UPS box
QUANTITIES
2 UPS 3 UPS 4 UPS
x 1 x 2 x 3
x 1
x 2 x 3 x 4
MODEL MAXIMUM CURRENT CONDUCTOR SECTION
4,5-6KVA 33A AWG #9
Battery Input
MODEL MAXIMUM CURRENT CONDUCTOR SECTION
4,5-6KVA 25A AWG #10
10KVA
10KVA
54,3A AWG #7
41A AWG #10
5
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