Hioki ST5540, Instruction Manual, Page: 275 / 326

10.14 Measurement Networks
269
8
9
Chap
ter 10
S
pe
c
ificat
ions
10
Network A is a measurement network that complies with the Electrical Appliance
and Material Safety Law.
Network A complies with the following law :
(1) Ordinance Concerning Technical Requirements for Electrical Appliances and
Materials
Filter setting for single-frequency network (OFF) and multi-frequency network
(ON)
When network A is selected, the instrument can also be used in compliance with
the following standards on testing leakage current :
(2) Automatic vending machines - Test method - (JIS B8561-93)
(3) Microwaves (JIS C9250-92)
In addition to the Electrical Appliance and Material Safety Law, many JIS stan-
dards specify the use of a single-frequency network (with 1 k

non-inductive
resistance only) for testing leakage current.
10.14Measurement Networks
Network A (for Electrical Appliance and Material Safety Law)
Ｖ
1 k

±
1%
Ｖ
1 k

±
1%
10 k

±
1%
11.225 nF
±
2%
579

±
2%
Single-frequency network (OFF)
Multi-frequency network (ON)
Applicable law Ordinance Concerning Technical Requirements for
Electrical Appliances and Materials
Measurement
circuit configuration Basic measurement element: 1 k

Frequency characteristic: ± 0.5% (DC to 1 MHz)
Low-pass filter
function Filter configuration (ON setting): RC filter
(10 k

+ 11.22 nF + 579

)
Filter setting: ON/OFF (1 k

only at OFF)
(with short-circuited input protective fuse)
Element tolerance Resistance : ± 1% (1 k

, 10 k

), ± 1%
± 2% (579

)
Capacitor : ± 2%