Carrier 40RU 25, Руководство пользователя

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Example: Supply voltage is 230-3-60
Determine maximum deviation from average voltage.
(AB) 227-224 = 3 v
(BC) 231-227 = 4 v
(AC) 227-226 = 1 v
Maximum deviation is 4 v.
Determine percent of voltage imbalance.
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
Table 9 — Electrical Data, Standard Motors
UNIT
a, b
V-PH-Hz
VOLTAGE
LIMITS
c
FAN MOTOR POWER SUPPLY
d
Hp (kW)
FULL LOAD
AMPS
(FLA)
e
MINIMUM
CIRCUIT AMPS
(MCA)
MAXIMUM
OVERCURRENT
PROTECTION (MOCP)
40RUA*25
40RUQ*25
40RUS*25
208/230-3-60 187-253 5.0 (3.73) 14.7/13.6 18.4/17.0 30/25
460-3-60 414-506 5.0 (3.73) 6.8 8.5 15
575-3-60 518-632 5.0 (3.73) 5.1 6.4 15
40RUA*28
40RUS*28
208/230-3-60 187-253 7.5 (5.59) 21.4/19.4 26.9/24.3 45/40
460-3-60 414-506 7.5 (5.59) 9.7 12.1 20
575-3-60 518-632 7.5 (5.59) 7.8 9.8 15
40RUA*30
40RUS*30
208/230-3-60 187-253 10.0 (7.46) 28.0/25.2 35.0/31.5 60/50
460-3-60 414-506 10.0 (7.46) 12.6 15.8 25
575-3-60 518-632 10.0 (7.46) 10.3 12.9 20
Table 10 — Electrical Data, Alternate Motors
UNIT a, b
NOTE(S):
a. Unbalanced 3-Phase Supply Voltage Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the formula in the
example below to determine the percentage of voltage imbalance.
b. Installation with Accessory Electric Heaters Size the Field Power Wiring between the heater TB1 and the 40RU indoor fan motor per NEC Article
430–28 (1) or (2) (depends on length of conduit between heater enclosure and 40RU power entry location). Install wires in field– installed conduit.
V - PH - Hz
VOLTAGE
LIMITS c
c. Motors are designed for satisfactory operation within 10% of normal voltage shown. Voltages should not exceed the limits shown in the Voltage
Limits column.
FAN MOTOR POWER SUPPLY
d
d. Minimum circuit amps (MCA) and MOCP values are calculated in accordance with The NEC. Article 440.
Hp (kW)
FULL LOAD AMPS
(FLA)
e
e. Motor FLA values are established in accordance with Underwriters’ Laboratories (UL). Standard 1995.
MINIMUM
CIRCUIT AMPS
(MCA)
MAXIMUM
OVERCURRENT
PROTECTION (MOCP)
40RUA*25
40RUQ*25
40RUS*25
208/230-3-60 187-253 7.5 (5.59) 21.4/19.4 26.9/24.3 45/40
460-3-60 414-506 7.5 (5.59) 9.7 12.1 20
575-3-60 518-632 7.5 (5.59) 7.8 9.8 15
40RUA*28
40RUA*30
40RUS*28
40RUS*30
208/230-3-60 187-253 10.0 (7.46) 28.0/25.2 35.0/31.5 60/50
460-3-60 414-506 10.0 (7.46) 12.6 15.8 25
575-3-60 518-632 10.0 (7.46) 10.3 12.9 20
% Voltage
Imbalance = 100 x
max voltage deviation from average voltage
average voltage
AB = 224 v
BC = 231 v
AC = 226 v
Average Voltage =
(224 + 231 + 226)
=
681
= 227
3 3
% Voltage Imbalance = 100x
4
= 1.78%
227
IMPORTANT: If the supply voltage phase imbalance is more than 2%,
contact your local electric utility company immediately.
A B C
MOTOR