1. System Installation Requirements
1-7
TI 32P01J10-01EN
Installation Specification
Installation Altitude
N-IO node (*1) (*2)
: 3000 m or less
Other than N-IO node : 2000 m or less
Installation category based on IEC 61010-1 (*3)
Category I
• For YOKOGAWA products, category I applies to the devices that receive the electric power
not more than 33 V AC, 70 V DC.
Category II
• For YOKOGAWA products, category II applies to the devices that receive the electric power
exceeding 33 V AC or 70 V DC.
Pollution degree based on IEC 61010-1: 2 (*4)
*1:
For more information about the device, refer to General Specification (GS).
*2:
For S2BN4D and S2BN5D, the installation altitude is 2000 m or less.
*3: The installation category, also referred to as an overvoltage category, defines the standard for impulse voltage. The category
number from I to IV applies the devices to determine the clearance required by this standard.
Category I applies to the device intended to be connected to a power supply with impulse voltage reduced to the safe level.
Category II applies to the device intended to be supplied from the building wiring.
*4:
Pollution degree indicates the adhesion level of foreign matter in a solid, liquid, or gaseous state that can reduce dielectric
strength. Degree 2 refers to a pollution level equivalent to the general indoor environment.
SEE
ALSO
See “Installation Environment Specifications” at the end of this chapter.
Measurement Categories
Regarding the measurement inputs, the following requirements must be satisfied to meet the
specifications for the device:
The category of the equipment applies to O (Other) in the following table.
The rated transient overvoltage is 1500 V.
Note: Do not use the equipment for measurements within measurement categories II, III and IV.
Table Measurement category
Applicable Standard
Description
IEC/EN 61010-2-030
CAN/CSA-C22.2 No.61010-2-030
O (Other) (*1)
For measurements performed on circuits not directly connected to
MAINS.
Measurement category II
For measurements performed on circuits directly connected to the
low voltage installation.
Measurement category III
For measurements performed in the building installation.
Measurement category IV
For measurements performed at the source of the low-voltage
installation.
*1:
Measurement category I defined in IEC/EN 61010-1:2001 and CAN/CSA-C22.2 No.61010-1-04 has been changed to “O
(Other)” in IEC/EN 61010-2-030 and CAN/CSA-C22.2 No.61010-2-030.
Mar. 29, 2019-00