Source: http://www.intertek.com/standards-updates/ul-778-motor-operated-water-pumps/
Timestamp: 2018-03-20 06:03:04
Document Index: 40552263

Matched Legal Cases: ['art 1', 'art 2', 'art 1', 'art 1', 'art 1', 'art 1', 'art 1', 'art 1', 'art 1', 'art 1']

UL 778, Motor-Operated Water Pumps
6th Edition Issued July 7, 2016 and revision November 14, 2016
5th Edition Revised September 2, 2015
Additional Options for the Evaluation of Electronic Circuits and Controls.
Updated Requirements for Switches.
Add Requirements for Button or Coin Cell Batteries of Lithium Technologies.
-- -- New/Revised requirements from update dated July 7, 2016
6 New section added;
6.1 Any function involved in the control, protection, and monitoring of safety-related attributes of a pump whereby a loss/malfunction of its functionality would represent an unacceptable risk of fire, electric shock, or casualty hazards would be considered a Safety Critical Function.
6.2 Electronic circuits that manage a Safety Critical Function (SCF) shall be:
6.3 Electronic circuits managing Safety Critical Functions shall comply with:
a) UL 60335-1 Based Requirements for the Evaluation of Electronic Circuits, Supplement SB or
b) The Standard for Automatic Electrical Controls for Household and Similar Use, Part 1: General Requirements, UL 60730-1 and it’s Part 2’s as specified in this standard. The function shall be considered Class B. When utilizing UL 60730-1, surge protective devices are defeated for the EMC immunity testing unless they are provided with spark gaps (gas tube surge suppressors) or
c) The requirements for the component as noted elsewhere in this standard.
6.4 Functions specified in Safety critical functions, Table 6.1 represent the common safety critical circuit functions of pumps. It is not intended to represent all possible safety critical functions.
Table 6.1 Safety critical functions
Function (see 6.1) Hazard Location of parameters
Motor running overload protection Risk of fire or electric shock 25.2
Motor locked rotor protection Risk of fire or electric shock 25.2
Motor short circuit protection Risk of fire or electric shock 25.2
Dry operation Risk of fire or electric shock 53.1
Burnout test Risk of fire or electric shock 53.2
Transformation overload Risk of fire or electric shock 53.5
Switch Mode Power Supply Overload Risk of fire or electric shock 53.6
Loss of phase Risk of fire 25.2
28.3 New clause added;
Switches that comply with the Standard for Switches for Appliances – Part 1: General Requirements, CAN/CSA-C22.2 No. 61058-1 or the Standard for Switches for Appliances – Part 1: General Requirements, UL 61058-1 shall be rated as specified in 28.3 – 28.5.
28.4 New clause added;
1) Switches for motor-operated appliances: for resistance and motor load in accordance with Clause 7.1.2.2 of the Standard for Switches for Appliances – Part 1: General Requirements, CAN/CSA-C22.2 No. 61058- 1 or the Standard for Switches for Appliances – Part 1: General Requirements, UL 61058-1, or the Outline of Investigation for Particular Requirements for Switches for Tools, UL 6059, if the switch would encounter this load in normal use or
2) Switches may be regarded as switches for a declared specific load in accordance with Clause 7.1.2.5 of the Standard for Switches for Appliances – Part 1: General Requirements, CAN/CSA-C22.2 No. 61058- 1 or the Standard for Switches for Appliances – Part 1: General Requirements, UL 61058-1, or the Outline of Investigation for Particular Requirements for Switches for Tools, UL 6059 and may be classified based upon the load conditions encountered in the appliance under normal load.
28.5 New clause added;
28.6 New clause added;
c) Switches other than power switches, such as speed selector switches, that may be switched under electrical load: 1000 cycles; d) The following non-power switches are not required to be rated for endurance:
1) Switches not intended for operation without electrical load, and which can be operated only with the aid of a tool or are interlocked so that they cannot be operated under electrical load or
2) Switches for 20 mA load as classified in Clause 7.1.2.6 of the Standard for Switches for Appliances – Part 1: General Requirements, CAN/CSAC22.2 No. 61058-1 or the Standard for Switches for Appliances – Part 1: General Requirements, UL 61058-1.
SUPPLEMENT SB Info New section added;
SUPPLEMENT SC New section added;
SECONDARY CIRCUITS EVALUATED TO NEC CLASS 2 DERIVED REQUIREMENTS
This new section includes new construction requirements and performance tests requirements for secondary circuits evaluated to NEC Class 2 derived requirements (see standard for section details).
-- -- New/Revised requirements from update dated November 14, 2016
35A New section added;
35A.1 The battery compartment of an appliance or any accessory, such as a wireless control, incorporating one or more coin cell batteries of lithium technologies shall comply with the Standard for Products Incorporating Button or Coin Cell Batteries of Lithium Technologies, UL 4200A, if the appliance or any accessory:
a) Is intended for use with one or more single cell batteries having a diameter of 32 mm (1.25 in) maximum with a diameter greater than its height; and
b) The appliance is intended for household use.
Exception: UL 4200A is not applicable to appliances and accessories intended for use where the battery is not intended to be replaced and is not referenced in instructions and markings.