Motor Thermal Protection - Toshiba TOSVERT VF-MB1 Instruction Manual

Branch circuit protection must be provided in accordance with the Canadian Electrical Code and any additional
local codes.
9.2.3 Compliance with Peripheral devices
Use the UL listed fuses at connecting to power supply.
Short circuit test is performed under the condition of the power supply short-circuit currents in below.
These interrupting capacities and fuse rating currents depend on the applicable motor capacities.
 AIC, Fuse and Wire sizes
Voltage
Inverter model
(V)
Markig Y
VFMB1S-2002PL 240
VFMB1S-2004PL 240
VFMB1S-2007PL 240
VFMB1S-2015PL 240
VFMB1S-2022PL 240
VFMB1-4004PL 500
VFMB1-4007PL 500
VFMB1-4015PL 500
VFMB1-4022PL 500
VFMB1-4037PL 500
VFMB1-4055PL 500
VFMB1-4075PL 500
VFMB1-4110PL 500
VFMB1-4150PL 500
Suitable for use on a circuit capable of delivering not more than___X___rms symmetrical kilo Amperes,___Y___Volts
maximum, when protected by___Z1___with a maximum rating of___Z2___.
(1) Input withstand rating is that for which the product has been designed thermally. Installation on a supply greater than
this level will require additional inductance to satisfy this level.
(2) Output interrupt rating relies on Integral solid state short circuit protection. This does not provide branch circuit
protection. Branch circuit protection must be provided in accordance with the National Electrical Code and any
additional local codes. This is dependant on the type of installation.
9.2.4

Motor thermal protection

Selects the electronic thermal protection characteristics that fit with the ratings and characteristics of the motor.
(Refer to section 3.5)
In case of multi motor operation with one inverter, thermal relay should be connected to each motor.
Input Output
withstand Interrupt
rating (kA) rating (kA)
(1) X (2)
1 5
1 5
1 5
1 5
1 5
5 5
5 5
5 5
5 5
5 5
22 22
22 22
22 22
22 22
I-7
Branch circuit Rating Cable sizes of
protection (A)
Z1 Z2
Class CC 7
Class J 15
Class J 25
Class J 40
Class J 45
Class CC 6
Class CC 6
Class CC 12
Class J 15
Class J 25
Class J 40
Class J 40
Class J 60
Class J 70
E6581697
Earth Cable
power circuit
- -
AWG 14 AWG 14
AWG 14 AWG 14
AWG 14 AWG 14
AWG 10 AWG 12
AWG 10 AWG 10
AWG 14 AWG 14
AWG 14 AWG 14
AWG 14 AWG 14
AWG 14 AWG 14
AWG 12 AWG 14
AWG 10 AWG 10
AWG 8 AWG 10
AWG 8 AWG 10
AWG 6 AWG 10
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