Category: Industry Trends

SPECIFICATIONS

Power supply …………………………………………………. 12/24 Vdc (8 to 40 Vdc)

Intrinsic consumption ………………………………………………………… max. 15 W

Ambient temperature (operation) ………………. -40°C to 70°C / -40 to 158°F

Ambient temperature (storage) …………………. -40°C to 85°C / -40 to 185°F

Ambient humidity……………………………………………… 95 %, non-condensing

Voltage …………………………………………………………………………………… ( /)

120 Vac [1] Rated (Vrated) …………………………………….. 69/120 Vac

Max. value (Vmax) …………………………………….. 86/150 Vac

Rated voltage phase – ground …………………………………………. 150 Vac

Rated surge volt. (Vsurge) ……………………………………………. 2.5 kV

and 480 Vac [4] Rated (Vrated) …………………………………… 277/480 Vac

Max. value (Vmax) …………………………………… 346/600 Vac

Rated voltage phase – ground …………………………………………. 300 Vac

Rated surge volt. (Vsurge) ……………………………………………. 4.0 kV

Accuracy …………………………………………………………………………… Class 0.5

Measurable alternator windings ……………………… 3p-3w, 3p-4w, 3p-4w OD

Setting range ………………… primary ……………………………50 to 650.000 Vac

Linear measuring range …………………………………………………….. 1.25×Vrated

Measuring frequency……………………………………….. 50/60 Hz (40 to 85 Hz)

High Impedance Input; Resistance per path ……. [1] 0.498 M, [4] 2.0 M

Max. power consumption per path ………………………………………… < 0.15 W

Current (galvanically isolated) Rated (Irated) …………. [1] ../1 A or [5] ../5 A

Linear measuring range ……………………………………………….. Igen = 3.0×Irated

Imains/ground = 1.5×Irated

Setting range ……………………………………………………………….. 1 to 32.000 A

Burden ……………………………………………………………………………… < 0.15 VA

Rated short-time current (1 s) ……………………………[1] 50×Irated, [5] 10×Irated

Accuracy …………………………………………………………………………… Class 0.5

Power …………………………………………………………………………………………….

Setting range…………………………………………………. 0.0 to 999.999.9 MW/kvar

Discrete inputs …………………………………………………….. galvanically isolated

Input range ……………………………………………………….. 12/24 Vdc (8 to 40 Vdc)

Input resistance………………………………………………………… approx. 20 kOhms

Relay outputs …………………………………..galvanically isolated / potential free

Contact material ……………………………………………………………………….. AgCdO

Load (GP) ……………………………………………………………… 2.00 Aac@250 Vac

2.00 Adc@24 Vdc / 0.36 Adc@125 Vdc / 0.18 Adc@250 Vdc

Pilot duty (PD) ……………………………………………………………………………………..

1.00 Adc@24 Vdc / 0.22 Adc@125 Vdc / 0.10 Adc@250 Vdc

Analog inputs (not isolated) …………………………………………..freely scalable

Type …………………………………………………………………… 0 to 10 V / 0 to 20 mA

Resolution …………………………………………………………………………………. 11 Bit

Housing  ……………………. Powder coated aluminum for back panel mounting

Dimensions WxHxD ………………… 250 × 227 × 84 mm (9.84 × 9.00 × 3.30 in)

Connection ………………………………………………. screw/plug terminals 2.5 mm²

Protection system ……………………………………………………………………….. IP 20

Weight ……………………………………………………………. approx. 1.900 g (4.2 lbs)

Disturbance test (CE) ………… tested according to applicable EN guidelines

Listings ………………………………………………………….. UL, cUL, GOST-R, CSA

Marine ………………………………….. LR (Type Approval), ABS (Type Approval)

 Applications for up to

32 generators with

16 mains and/or tie

breakers

 Configurable for mains

and tie breaker

applications

 Complex applications

with up to 8 bus

segments

 Automatic segment

recognition

 Redundant Ethernet

communication for

enhanced reliability

 The “system update”

feature allows for

system reconfiguration

 PLC and DCS compati

ble via Modbus RTU or

Modbus TCP

 Automatic plant loading

and unloading for bump

less load transfer to and

from the utility

 Controls plant wide

import/export levels

against the utility

 Overall plant Power

Factor control

 Ethernet or RS-232 port

for configuration of

device using Woodward

ToolKit software

 UL/cUL & CE Listed

 The MSLC-2 hardware is adjustable for multiple applications.

 Slip frequency or voltage phase matching synchronizing fully selectable with dead bus option in both

directions provide full flexibility for intertie and main-tie-main applications.

 Having functions integrated into one box eliminates the need for redundant sensors (like PTs, CTs, and

MOPs) that connect to individual modules such as the load sensor and synchronizer.

 Digital signal processing makes the MSLC-2 resistant to power line distortions and harmonics.

 Three-phase true RMS power sensing provides accurate readings even with unbalanced phase loading

and voltage fluctuations.

 Export/import control over multiple utility MSLC-2’s in same segment.

 The Woodward ToolKit™ software allows flexible setup using the same basic menu tree as the original

MSLC plus an overview screen. No hand held programmer is required. Graphical overview of generators

and bus bar parameters with trending makes the MSLC-2 commissioning friendly.

 The Toolkit can be accessed either via one of the Ethernet ports or via RS-232 port.

 Phase angle compensation provides adjustment for additional deviation correction across a

transformer.

 The system update feature allows for system reconfiguration.

FEATURES

 One MSLC-2 can provide master control for up to 32 DSLC and an additional 15 MSLC-2 in a system.

 Two dedicated Ethernet lines for precise system communications between all DSLC-2’s and

MSLC-2’s on the system.

 Ethernet Modbus TCP for remote control and monitoring by PLC or DCS system.

 Redundant Ethernet communications for enhanced reliability.

 Master MSLC-2 redundancy, loss of communications with the designated MSLC-2 master initiates

control hand off to the next designated MSLC-2 master.

 The MSLC-2 hardware is adjustable for multiple applications.

 Slip frequency or voltage phase matching synchronizing fully selectable with dead bus option in both

directions provide full flexibility for intertie and main-tie-main applications.

 Having functions integrated into one box eliminates the need for redundant sensors (like PTs, CTs, and

MOPs) that connect to individual modules such as the load sensor and synchronizer.

 Digital signal processing makes the MSLC-2 resistant to power line distortions and harmonics.

 Three-phase true RMS power sensing provides accurate readings even with unbalanced phase loading

and voltage fluctuations.

The MSLC-2 provides phase matching or slip frequency synchronization, with voltage matching,

across a utility or intertie breaker. The MSLC-2/DSLC-2 combination can handle multiple utility con

nections with a maximum of 8 bus segments in one application.

The MSLC-2’s load sensor and load control sense true RMS power and provide a bump-less load

ing and unloading against a utility grid. Baseload, import/export, process, and utility unload modes

control the KW power between different power sources at the same time controlling the reactive

power, VAR and power factor.  Reactive power is also ramped on and off for the smoothest load

transactions between power grids.

The MSLC-2 communicates via Ethernet, with redundant Ethernet now available, to control real

and reactive loading against the utility by DSLC-2 equipped generators.

The tie breaker mode allows synchronization between multiple generator systems. Segments are

connected and power can be measured across an intertie, but no load control is functional when in

Tie breaker operation.