ASTM F1669M-12

Standard Specification for Insulation Monitors for Shipboard Electrical Systems [Metric]

ABSTRACT
This specification covers insulation monitoring devices for stripboard electrical systems. Materials covered by this specification include Type I (ac device) and Type II (dc device) electrical system insulation monitoring devices used in the detection of ohmic insulation faults to ground in either active ac ungrounded electrical systems with dc components (Type I) or dc ungrounded electrical systems (Type II). However, devices used in ac ungrounded systems without dc components are not included. The devices shall undergo conformance and routine tests to ensure that the device meets the requirements specified. Conformance tests shall included testing of response time, peak voltage, input impedance or resistance, built-in meters, and impulse voltage withstand capabilities, whereas routine tests shall include testing of response value, self-test function, built-in meters, and voltage.
SCOPE
1.1 This specification covers two (2) types of electrical system insulation monitoring devices.  
1.1.1 Type I is an AC device intended as a permanently installed unit for use in the detection of ohmic insulation faults to ground in active AC ungrounded electrical systems up to 1000 VAC, having DC components up to 1500 VDC.  
1.1.2 Type II is a DC device intended as a permanently installed unit for use in the detection of ohmic insulation faults to ground in DC ungrounded electrical systems up to 1500 VDC.  
1.2 Limitations—This specification does not cover devices that are intended for operation in AC ungrounded systems without DC components.  
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.4 The following precautionary caveat pertains only to the test methods portion, Section 7 of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 30-Sep-2012
• ICS: 47.020.60 - Electrical equipment of ships and of marine structures
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.10 - Electrical

Relations

• Replaces: ASTM F1669M-96(2007) - Standard Specification for Insulation Monitors for Shipboard Electrical Systems [Metric]
• Effective Date: 01-Oct-2012
• Replaced By: ASTM F1669M-12(2018) - Standard Specification for Insulation Monitors for Shipboard Electrical Systems [Metric]
• Effective Date: 01-Apr-2018

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F1669M −12 An American National Standard
Standard Specification for
Insulation Monitors for Shipboard Electrical Systems
1
[Metric]
This standard is issued under the fixed designation F1669M; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
1.1 This specification covers two (2) types of electrical 2.1 UL Standard:
system insulation monitoring devices. UL STD840Insulation Coordination Including Clearances
1.1.1 Type I is an AC device intended as a permanently and Creepage Distances for Electrical Equipment
3
installed unit for use in the detection of ohmic insulation faults 2.2 IEC Standards:
to ground in active AC ungrounded electrical systems up to IEC255-5Insulation Tests for Electrical Relays
1000 VAC, having DC components up to 1500 VDC. IEC 364-4-41 Electrical Installations of Buildings/
1.1.2 Type II is a DC device intended as a permanently Protection for Safety/Protection Against Electrical Shock
4
installed unit for use in the detection of ohmic insulation faults 2.3 Military Standard:
to ground in DC ungrounded electrical systems up to 1500 MIL-STD-1399(NAVY) Section 300A Interface Standards
VDC. for Shipboard Systems; Electrical Power, Alternating
Current
1.2 Limitations—This specification does not cover devices
that are intended for operation in AC ungrounded systems
3. Terminology
without DC components.
3.1 Definitions of Terms Specific to This Standard:
1.3 The values stated in SI units are to be regarded as the
3.1.1 AC or DC ungrounded electrical system, n—a system
standard. The values given in parentheses are for information
that has no intentional connection to ground and can continue
only.
to perform normally if one conductor becomes connected to
1.4 The following precautionary caveat pertains only to the
ground.
test methods portion, Section 7 of this specification: This
3.1.2 measuring signal, n—the output signal from the insu-
standard does not purport to address all of the safety concerns,
lation monitor that is superimposed between the AC or DC
if any, associated with its use. It is the responsibility of the user
ungrounded system to be monitored and ground.
of this standard to establish appropriate safety, health, and
3.1.3 response value, n—the adjustable or preset set-point
environmental practices and determine the applicability of
valueofthesysteminsulationresistanceatwhichaninsulation
regulatory limitations prior to use.
monitor will provide an alarm indication.
1.5 This international standard was developed in accor-
3.1.4 system leakage capacitance, n—the total capacitance
dance with internationally recognized principles on standard-
to ground of the system including all connected consumers.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
3.1.5 touch voltage, n—the voltage appearing during an
mendations issued by the World Trade Organization Technical
insulation fault, between simultaneously accessible parts. This
Barriers to Trade (TBT) Committee.
termisusedonlyinconnectionwithprotectionagainstindirect
1 2
This specification is under the jurisdiction ofASTM Committee F25 on Ships Available from Underwriters Laboratories (UL), 333 Pfingsten Rd.,
and Marine Technology and is the direct responsibility of Subcommittee F25.10 in Northbrook, IL 60062-2096, http://www.ul.com.
3
Electrical. Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
Current edition approved Oct. 1, 2012. Published November 2012. Originally 4th Floor, New York, NY 10036, http://www.ansi.org.
4
approved in 1996. Last previous edition approved in 2007 as F1669M–96 (2007). Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
DOI: 10.1520/F1669M-12. Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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F1669M − 12
human contacts, that is, no direct human contact with a live 6.5 Working Range of System Voltage and Frequency —The
conductor. The International Electrotechnical Commission insulation monitor shall perform as specified when operating
(IEC)limitsthemaximumprospectivetouchvoltagewhichcan with a system voltage of 0–115% nominal over the frequency
be maintained indefinitely to 50 VAC rms or 120 V ripple-free range 50–400 hz.
DC.
6.6 Self-Test—Theinsulationmonitorshallincludeabuilt-in
test device or be equipped with connection provisions for a
4. Ordering Information
separate device th
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F1669M − 96 (Reapproved 2007) F1669M − 12 An American National Standard
Standard Specification for
Insulation Monitors for Shipboard Electrical Systems
1
[Metric]
This standard is issued under the fixed designation F1669M; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers two (2) types of electrical system insulation monitoring devices.
1.1.1 Type I is an acAC device intended as a permanently installed unit for use in the detection of ohmic insulation faults to
ground in active acAC ungrounded electrical systems up to 1000 VAC, having dcDC components up to 1500 VDC.
1.1.2 Type II is a dcDC device intended as a permanently installed unit for use in the detection of ohmic insulation faults to
ground in dcDC ungrounded electrical systems up to 1500 VDC.
1.2 Limitations—This specification does not cover devices that are intended for operation in acAC ungrounded systems without
dcDC components.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 The following precautionary caveat pertains only to the test methods portion, Section 7 of this specification:This standard
does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this
standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents
2.1 UL Standard:
2
UL STD 840 Insulation Coordination Including Clearances and Creepage Distances for Electrical Equipment
3
2.2 IEC Standards:
IEC 255-5 Insulation Tests for Electrical Relays
IEC 364-4-41 Electrical Installations of Buildings/Protection for Safety/Protection Against Electrical Shock
2.3 Military Standard:
4
MIL-STD-1399 (NAVY) Section 300A Interface Standards for Shipboard Systems; Electrical Power, Alternating Current
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 acAC or dcDC ungrounded electrical system, n—a system that has no intentional connection to ground and can continue
to perform normally if one conductor becomes connected to ground.
3.1.2 measuring signal, n—the output signal from the insulation monitor that is superimposed between the acAC or dcDC
ungrounded system to be monitored and ground.
3.1.3 response value, n—the adjustable or preset set-point value of the system insulation resistance at which an insulation
monitor will provide an alarm indication.
3.1.4 system leakage capacitance, n—the total capacitance to ground of the system including all connected consumers.
3.1.5 touch voltage, n—the voltage appearing during an insulation fault, between simultaneously accessible parts. This term is
used only in connection with protection against indirect human contacts, that is, no direct human contact with a live conductor.
1
This specification is under the jurisdiction of ASTM Committee F25 on Ships and Marine Technology and is the direct responsibility of Subcommittee F25.10 in
Electrical.
Current edition approved May 1, 2007Oct. 1, 2012. Published June 2007November 2012. Originally approved in 1996. Last previous edition approved in 20022007 as
F1669M - 96(2002).(2007). DOI: 10.1520/F1669M-96R07.10.1520/F1669M-12.
2
Available from Underwriters Laboratories (UL), 333 Pfingsten Rd., Northbrook, IL 60062-2096, http://www.ul.com.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, Attn: NPODS.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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F1669M − 12
The International Electrotechnical Commission (IEC) limits the maximum prospective touch voltage which can be maintained
indefinitely to 50 VAC rms or 120 V ripple-free dc.DC.
4. Ordering Information
4.1 Orders for monitoring devices under this specification shall state the following information:
4.1.1 Type and quantity.
4.1.2 Nominal system voltage and frequency (for acAC system).
4.1.3 Input supply voltage.
4.1.4 Response value/set-point ra
...