5.2 Requirements for Conpliance with the Low Voltage Directive
5 - 6
1
OV
E
R
VI
EW
2
SYSTE
M
CO
N
F
IG
UR
A
T
IO
N
3
S
P
E
CI
F
ICA
T
ION
S
4
P
A
R
T
NA
ME
AND
SETTING
S
5
EMC AN
D LOW
V
O
LTA
G
E
DIRE
C
T
IVE
6
IN
ST
AL
L
A
TI
ON
7
WIRING
8
OP
TI
ON
5.2.3
Control panel
Because the GOT is open type equipment (device designed to be stored within another device), be sure to use it only
when installed in a control panel.
(1) Shock protection
In order to prevent those who are unfamiliar with power facility, e.g., an operator, from getting a shock, make
sure to take the following measures on the control panel.
(a) Store the GOT within the control panel locked, and allow only those who are familiar with power facility to
unlock the panel.
(b) Build the structure in order that the power supply will be shut off when the control panel is opened.
(2) Dustproof and waterproof features
The control panel also provides protection from dust, water and other substances. Insufficient ingression
protection may lower the insulation withstand voltage, resulting in insulation destruction. The insulation in the
GOT is designed to cope with the pollution level 2, so use in an environment with pollustion level 2 or better.
5.2.4
Grounding
The following are applicable ground terminals. Use them in the grounded state.
Be sure to ground the GOT for ensuring the safety and complying with the EMC Directive.
5.2.5
External wiring
(1) External devices
When a device with a hazardous voltage circuit is externally connected to the GOT, select a model which
complies with the Low Voltage Directive's requirements for isolation between the primary and secondary circuits.
(2) Insulation requirements
Dielectric withstand voltages are shown in the following table.
Reinforced Insulation Withstand Voltage
(Installation Category II, source : IEC664)
Pollution level1 :
An environment where the air is dry and conductive dust does not exist.
Pollution level2 :
An environment where conductive dust does not usually exist, but occasional
temporary conductivity occurs due to the accumulated dust.
Generally, this is the level for inside the control panel equivalent a control room or
on the floor of a typical factory.
Pollution level3 :
An environment where conductive dust exits and conductivity may be generated
due to the accumulated dust.
An environment for a typical factory floor.
Pollution level4 :
Continuous conductivity may occur due to rain, snow, etc. An outdoor environment.
Functional grounding
:
Improves the noise resistance.
Rated voltage of hazardous voltage area
Surge withstand voltage (1.2/50 s)
150 VAC or below
2500V
300 VAC or below
4000V
Summary of Contents for GOT 1000 GT16
Page 1: ...GT16 User s Manual Hardware ...
Page 2: ......
Page 14: ...A 12 INDEX REVISIONS WARRANTY ...
Page 210: ...App 17 ...
Page 212: ...Index 2 Transportation Precautions App 15 U USB environmental protection cover 2 17 8 19 ...
Page 217: ......
