Starter Selection
1
The RVS-DN is a highly sophisticated and reliable
starter designed for use with standard three-phase,
three-wire, squirrel cage induction motors. It provides
the best method of reducing current and torque during
motor starting.
The RVS-DN starts the motor by supplying a slowly
increasing voltage to the motor, providing soft start and
smooth acceleration, while drawing the minimum
current necessary to start the motor.
The second generation, microprocessor based digital
circuitry provides unique features like pump control,
slow speed, electronic reversing and accurate motor
protection, with optional Insulation Protection,
Thermistor input, etc.
The optional RS 485 Communication with MODBUS
protocol enables full control (Start, Stop, Dual Adjust,
command, etc.) and supervision. Up to 32 starters can
be connected on a shield twisted pair to a host
computer.
RVS-DN Ratings and Frame sizes
Max Motor FLA (Amp) Starter Type (FLC) Frame Size
8 RVS-DN 8 A
17 RVS-DN 17
31 RVS-DN 31
44 RVS-DN 44
58 RVS-DN 58
72 RVS-DN 72
85 RVS-DN 85 B
105 RVS-DN 105
145 RVS-DN 145
170 RVS-DN 170
210 RVS-DN 210 C
310 RVS-DN 310
390 RVS-DN 390
460 RVS-DN 460 D
580 RVS-DN 580
820 RVS-DN 820
950 RVS-DN 950
1100* RVS-DN 1100 E
1400* RVS-DN 1400
1800* RVS-DN 1800
2150* RVS-DN 2150 F
2400* RVS-DN 2400 G
2700* RVS-DN 2700
3000* RVS-DN 3000
3500* RVS-DN 3500
* Fully rated when used with a by-pass contactor
Dimensions (mm)
For exact dimensions, see Dimension Sheets.
Size Width Hei
ht De
th Wei
ht
K
A 153 310 170* 4.5
6.0
7.5
B std. 274 370 222 15
B new 274 385 238 15
C 590** 500 290 45
D 623 660*** 290 65
E 723 1100 370 170
F 750 1300 392 240
G 900 1300 410 314
* 217mm – for 44, 58 & 72A
** 536mm – By special order, without side covers
*** Add 160mm for bypass bus-bars extension
The starter should be selected in accordance with the
following criteria (see Ordering Information data).
Motor Current & Starting Conditions
Select the starter according to motor’s Full Load
Ampere (FLA) – as indicated on its nameplate (even if
the motor is not fully loaded).
The RVS-DN is designed to operate under the
following conditions:
Max. ambient temp: 50ºC
Max. starting current: 400% motor’s FLA
Max. starting time: 30 sec. (at 400% FLA)
Max. starts per hour: 4 starts per hour at max
conditions. Up to 60 starts per hour at light load
applications.
Note: For very frequent starts (inching applications),
the inching current should be considered as the
Full Load Ampere (FLA).
Main Voltage (line to line)
Thyristor’s PIV rating, internal circuitry and insulation
defines four voltage levels: 220-440V, 575-600V
460-500V, 660-690V
Each starter is suitable for one of the above levels &
for 50/60 Hz.
Control Voltage
The Control Voltage operates the electronic circuitry
and fans. Two voltage levels are available:
220-240V + 10%-15%, 50/60 Hz (standard)
110-120V + 10%-15%, 50/60 Hz
110 Vdc for Frame size B-G (by special order).
Control Inputs
Control Input voltage (start, stop, etc.) can be the same
as Control Supply above (standard), or 24-240V AC /
DC (by special order).
Options
(see Ordering Information Data)
• Communication Card (option # 3)
• Insulation Tester Card (option # 4)
• Analogue card-Thermistor in/Analogue out (option # 5)
• Special treatment – Consult factory (option # 8)
• Preparation for by-pass contactor (option # 9)
• Special width for size C-536 mm (option #A)
• Line/load bus-bars at the bottom, size C&D (option #B)
• Door install MMI instead of the original (option #D)
• Door install MMI w/op.#L&1.5m cable (option #DK)
• Back-lit LCD (option # L)
• Lloyds Register ENV-1, ENV-2 approval (option #M)
• Tachometer feedback (option # T)
• UL & cUL approvals (option # U)
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