California Energy Commission (CEC)

Phihong Power Supplies that are Compliant

Scope

(u) Power supplies, which are single voltage external AC to DC and AC to AC power supplies included with other retail products, and single voltage external AC to DC or AC to AC power supplies sold separately; and consumer audio and video equipment, which are televisions, compact audio products, digital versatile disc players, digital versatile disc recorders, and digital television adapters.

Limits

(1) Power Supplies. The efficiency in the active mode of power supplies manufactured on or after the effective dates shall be not less than the applicable values shown (expressed as the decimal equivalent of a percentage); and the energy consumption in the no-load mode of power supplies manufactured on or after the effective dates shown shall be not greater than the applicable values shown in Table U-1 or Table U-2.

Table U-1
Standards for Power Supplies
Effective January 1, 2007:
for laptop computers, mobile phones, printers,
print servers, scanners, PDAs, and digital cameras
Effective July 1, 2007:
for wireline telephones and all other applications

Nameplate Output

Minimum Efficiency in Active Mode

<1 Watt

0.49 * Nameplate Output

Greater than or = to 1 and Less than or = to 49 Watts

0.09 * Ln(Nameplate Output) + 0.49

> 49 Watts 0.84

0.84

Maximum Energy Consumption in No-Load Mode

0 to <10 Watts

0.5 Watts

Greater than or = to 10 to Less than or = 250 Watts

0.75 Watts

Where Ln (Nameplate Output) = Natural Logarithm of the nameplate output expressed in Watts.

Table U-2
Standards for Power Supplies
Effective July 1, 2008

Nameplate Output

Minimum Efficiency in Active Mode

<1 Watt

0.5 * Nameplate Output

Greater than or = to1 and Less than or = 51 Watts

0.09*Ln(Nameplate Output) + 0.5

> 51 Watts

0.85

Maximum Energy Consumption in No-Load Mode

Any output

0.5 Watts

Where Ln (Nameplate Output) = Natural Logarithm of the nameplate output expressed in Watts.

Marking Requirements

(9) External Power Supplies.

(i) Each power supply shall be marked on its nameplate with the appropriate numeral,
specified below, if it meets or exceeds both the no-load and average active mode
efficiency requirements associated with that numeral as specified below, at each test
voltage and frequency value marked on its nameplate, when tested in accordance with
the test method in Section 1604(u)(1).

a. “III” for those models certified under Section 1606 as complying with the standards
effective January 1, 2007 in Table U-1 of this Article, but not as complying with
the standards effective July 1, 2008 in Table U-2 of this Article.

b. “IV” for those models certified under Section 1606 as complying with the
standards effective July 1, 2008 in Table U-2 of this Article.

(ii) The mark shall comply with the following:

a. Format. Roman numeral: III or IV.
b. Font. Preferred Times Roman (or other plain serif fonts).
c. Size. Legible.
d. Color. Text to contrast with the nameplate background
e. Permanence. Indelible.

See complete document.

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