10.14 Measurement Networks
271
8
9
Chapter 10 Specifications
10
This network complies with IEC 60601-1:2005 3rd edition.
The B2 measurement network complies with the following standard.
(1) Medical electrical equipment - Part 1 : General requirements for safety
(IEC 60601-1:2005 3rd)
(2) General safety regulations for medical electrical equipment (JIS T 1001-92)
(3) Medical electrical equipment-Part1:
General requirements for basic safety and essential performace
(JIS T 0601-1:2012)
When network B2 is selected, the instrument can also be used in compliance
with the following standards on testing leakage current:
(4) JIS standards for medical X-ray equipment
The instrument can be used for testing leakage current in isolation transformers
in compliance with the safety standard for electrical facilities for hospitals (JIS T
1022-96).
In addition to medical electrical equipment standards, many JIS standards spec-
ify the use of a network with 1 k non-inductive resistance for testing leakage
current.
Network B2 (for IEC 60601-1:2005 3rd)
Ｖ
1 k
±
1%
10 k ± 1%
0.015
F
± 2%
Ｖ
1 k ± 1%
Network with a frequency
characteristic (ON)
Network with 1 k non-inductive
resistance only (OFF)
Applicable
standards
(1) Medical electrical equipment - Part 1 : General requirements for safety
IEC 60601-1:2005 3rd, JIS T 0601-1:2012
(2) Medical electrical safety regulations
JIS T1001-92
(3) General regulations for method of testing safety of medical electrical equipment
JIS T1002-92
Measurement circuit
configuration
Basic measurement element: 1 k
Frequency characteristic: ±0.5% (DC to 1 MHz)
Filter configuration Filter configuration (ON setting) : RC filter (10 k + 15 nF)
Filter setting : ON/OFF (1 k only at OFF)
(with short-circuited input protective fuse)
Element tolerance Resistance : ± 1%
Capacitor : ± 2%
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