User Setting for Voltage & Frequency
Source 1
Voltage "Restore" Factory Default: 90%
This adjustment determines the minimum acceptable voltage required to transfer to Source 1.
Adjust via the SET menu. Range is 85% to 100% in 1% increments (see page 18).
Once satisfied, the T timer will begin timing to transfer to Source 1.
Voltage "Fail" Factory Default: 80%
This adjustment determines the low voltage threshold. Adjust via the SET menu. Range is 75% to 98% in 1% increments (see page 18).
"Fail" must be a minimum of 2 % below "Restore" setting. Once voltage falls below threshold, P timer begins timing to signal Source 2 Generator to start.
Source 2
Voltage "Restore" Factory Default: 90%
This adjustment determines the minimum acceptable voltage required to transfer to Source 2.
Adjust via the SET menu. Range is 85% to 100% in 1% increments (see page 18).
Once satisfied, the W timer will begin timing to transfer to Source 2.
Voltage "Fail" Factory Default: 80%
This adjustment determines the low voltage threshold. Adjust via the SET menu. Range is 75% to 98% in 1% increments (see page 18).
"Fail" must be a minimum of 2 % below "Restore" setting. Once voltage falls below threshold, T timer will be bypassed to expedite the transfer to Source 1.
Frequency "Restore"
Factory Default: 95%
This adjustment determines the minimum acceptable frequency required to transfer to Source 2.
Adjust via the SET menu. Range is 90% to 100% in 1% increments (see page 18).
Once satisfied, the W timer will begin timing to transfer to Source 2.
Frequency "Fail" Factory Default: 90%
This adjustment determines the low frequency threshold. Adjust via the SET menu. Range is 88% to 98% in 1% increments (see page 18).
"Fail" must be a minimum of 2 % below "Restore" setting. Once satisfied, the W timer will begin timing to transfer to Source 2.
Standard Features, MSTDG Option Pkg.
6
Test Switch, Momentary
A3
Auxiliary Contact: Closed when the switch is in Source 2 position.
DS
Disconnect Switch, Auto/Inhibit.
Inhibits transfer in either direction when in inhibit. Allows automatic operation when in Auto.
A4
Auxiliary Contact: Closed when the switch is in Source 1 position.
Calibrate
While monitoring the actual Phase to Phase voltage lev- els and Frequency with a calibrated test equipment, the Phase to Phase voltage sensing and Frequency can be adjusted accordingly. Calibration capabilities are available for Frequency and AB, BC, CA Phase to Phase voltage for both Sources. Adjust via SET menu (see page 18)
CDT
Load or
DT (Delayed Transition Only)
Time Delay from Neutral Switch position to Source 1 position. Adjustable
DW (Delayed Transition Only)
Time Delay from Neutral Switch position to Source 2 position. Adjustable
E
Engine Start Contact
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