NBN ISO 14990-1:2021

This document specifies general safety requirements for the electrical equipment and its components
incorporated into earth-moving machines (EMMs) as defined in ISO 6165, and addresses the safety of
operators, technicians, service/maintenance personnel and bystanders.
It is applicable to those machines using on-board voltages in the ranges of 50 V–36 kV AC r.m.s. at any
frequency and 75 V–36 kV DC — including any repetition rate of pulsating DC — intended for outdoor
use. It is applicable to both low and high voltages, except where its applicability to high- or low-voltage
equipment only is indicated. Voltages occurring within devices are not considered to be on-board
voltages and are thus not within its scope.
NOTE 1 Special considerations typically apply at frequencies greater than 30 kHz. Where reference standards
are limited to frequencies below those used on the EMM, it is the responsibility of the user to assess the risks and
address them appropriately.
This document covers all significant hazards, hazardous situations, and hazardous events relevant to
the voltage range for earth-moving machinery within its scope when the machinery is used as intended
or under conditions of misuse reasonably foreseeable by the manufacturer. It specifies appropriate
technical measures for eliminating or reducing risks arising from significant hazards, hazardous
situations, or hazardous events during commissioning, operation, and maintenance. It is not applicable
to machines manufactured before the date of its publication.
It is intended to be used in conjunction with ISO 14990-2 and ISO 14990-3, which give provisions
specific to the machine’s power source that take precedence over the requirements of this document for
the machines covered. For multipurpose machinery, all those parts of ISO 14990 are applicable whose
requirements cover the functions and applications of the machine.
Even though this document addresses most hazards associated with the use of low- or high-voltage
electrical systems in earth-moving machines, owing to the possible presence of additional electrical
hazards, conformance with it cannot be taken as an absolute guarantee of electrical safety. Areas of
concern are included in the list of significant hazards found in Annex A.
This document specifies requirements for on-board generators, electrically isolated from other low-
voltage systems and provided as power sources for general-purpose socket outlets installed on EMMs,
and transformer or inverter power sources for general-purpose socket outlets.
NOTE 2 Local or regional requirements may also apply to general-purpose socket outlet arrangements.
Although nominal 12 V and 24 V (alternator/battery) systems are not addressed, the meeting of some
of the requirements, including those of PELV, will ensure that the low-voltage system is sufficiently
isolated from 12 V and 24 V systems.
This document does not address risks associated with explosive atmospheres, which are sometimes
found in mining and other EMM applications.
INTERNATIONAL STANDARD ISO 14990-1:2016(E)
© ISO 2016 – All rights reserved 1

ISO 14990-1:2016(E)