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5.7 REPO (Option)

User provided switch circuits are required to activate the REPO. Upon activation, the

REPO function trips Breaker 2 (if closed) and Breaker 3 (if closed), interrupting power to

the load. See Section for REPO installation details

To restart the system after activation of the REPO, make sure that the REPO switch is in

the non-activated state before continuing. Then, use the Startup procedure for the MBS.

This REPO only opens the breakers in the Bypass cabinet. The UPS requires

separate REPO wiring isolated from the Bypass Cabinet REPO wiring. See UPS

Manual

Table 2 - Maintenance Bypass Switch States

Breaker 1 = UPS Input

Breaker 2 = Bypass

Breaker 3 = UPS Output

State Name

Breaker

Normal

closed

open

closed

Overlap

closed

UPS Unloaded

closed

open

Maintenance

open

closed

open

Load Off

open

Test UPS

closed

open

Test Battery

open

closed

Not Allowed

open

closed

5.8 Potential Issues:

MBS will not allow BKR2 to close—

1. Check to see that the UPS is on bypass (SWMB is closed).

2. The UPS controls must be powered (BKR1 and SWBY should be closed).

3. Verify that the backfeed prevention interlock signals were properly wired as part of

the installation and that this wiring has not been damaged.

BKR2 in the MBS trips when power is applied—

1. This is likely due to a procedural error. Note that BKR2 and BKR3 must not be

closed at the same time unless the UPS is powered and the UPS is in bypass mode.

2. It is likely that BKR3 is closed and the backfeed prevention interlock function is

preventing BKR2 from staying closed.

3. Since the UPS is not powered, the signal that indicates that the UPS is in bypass

mode cannot be generated.

4. Open BKR3 and close BKR2. BKR2 should close and stay closed.

5. If power to the UPS is not required, open BKR1.

Summary of Contents for FirstLine P

Page 1: ...003 2622 REV A 03 17 20 FIRSTLINE P Maintenance Bypass Switch Cabinet 480V 60Hz 300 to 500kVA USER MANUAL ...

Page 2: ...roducts Company The Staco Energy Products Company reserves the right to modify the product described herein in order to improve it at any time and without notice 2425 Technical Dr Miamisburg Ohio 45342 U S Toll Free 866 261 1191 937 253 1191 Fax 937 253 1723 Web site www stacoenergy com Thank you for choosing our product ...

Page 3: ...KRU 12 5 4 To transfer from MBS to normal mode 12 5 5 To transfer from MBS to normal mode with SKRU 12 5 6 Normal start up with load unpowered 12 5 7 REPO Option 13 5 8 Potential Issues 13 6 Maintenance 14 7 Technical Specifications 15 Table 1 Model Floor Loadings 4 Table 2 Maintenance Bypass Switch States 13 Table 3 Recommended Wire Size 15 Table 4 Terminal Tightening Torques 15 Table 5 Environme...

Page 4: ... operating this equipment DANGER This equipment contains lethal voltages All repairs and service should only be performed by authorized service personnel There are no user serviceable parts inside this equipment Operation of switches and breakers require access to the cabinet interior and should only be performed by qualified personnel exercising appropriate caution WARNING This equipment connects...

Page 5: ... The various items of PPE must be selected and sized according to the nature of the hazard particularly electrical posed by the unit Accident prevention footwear Protective eyewear Protective clothing Helmet Work gloves 1 2 General Precautions This manual contains detailed instructions for the use installation and start up of the unit Read the manual carefully before installation For information o...

Page 6: ...ce bypass function The cabinet has conduit attachment points at the top and the bottom for maximum flexibility in wiring the source and load power connections Please refer to Figure 1 for the outline drawing of the cabinet Figure 1 The FirstLine P Maintenance Bypass Switch Cabinet Applicability This equipment is design to work with UPS models FLU 300 00 FLU 400 00 and FLU 500 00 ...

Page 7: ... the Cabinet s The following tools are required for unloading the cabinet s Wrenches for 3 8 lag bolts Forklift or pallet jack The cabinets are heavy see Table 1 Unloading the cabinets requires at least two people to safely remove the cabinets from the pallet To remove the Maintenance Bypass Switch cabinet from the ship pallet 1 Make sure the forklift is rated for the cabinet weight 2 Make sure th...

Page 8: ...nches 1 2 2 5 5cm above the pallet 10 Slide the pallet completely away from the raised cabinet 11 Carefully move the cabinet to the desired location and slowly lower the cabinet to the floor or other appropriate flat surface 12 Remount the two kick panels ...

Page 9: ... are four control connections between the Maintenance Bypass Switch Cabinet and the UPS that must be made A user accessible disconnect device must be provided by other s between the output of this cabinet and the load Refer to Error Reference source not found for current requirements WARNING Only qualified service personnel such as a licensed electrician should perform the installation and initial...

Page 10: ...ded at the top see Figure 1 and bottom of the cabinet a Connection from Utility source and connection to the critical load can entry the unit from top or bottom b Connections between the MBS and UPS must be made at the bottom c The low voltage control connection wires must be routed through the wire duct below the terminal block to the bottom landing plate in the rear of the cabinet to ensure phys...

Page 11: ...ls must be properly torqued see Table 4 b Ensure proper phasing of the cables The source needs to have A B C phase sequence 8 Check all work Replace the panels that were removed for access Insure that the shield cover panels have been mounted in place Failure to do so could subject personnel to lethal voltages 4 4 Control Connections Control connections must be installed from the CUSTOMER LOW VOLT...

Page 12: ...lso note that the Options Control Board in the MBS must be properly configured for the normally closed REPO switch to work 4 4 2 Terminal Strip Torque Requirements The terminals on the Customer Low Voltage Connection Terminal Block must be torqued to 5 3 to 7 0 inch lbs The terminals on the Control Connections on the UPS must be torqued to 4 4 inch lbs Figure 5 Standard Customer Low Voltage Connec...

Page 13: ...s and Inverter Output Breakers to trip on loss of power The second section NCR enables the Normally Closed REPO input and should be OFF unless there is a normally closed REPO switch connected The third section OTT is not implemented and should be turned OFF to avoid confusion The fourth section is not used and should be turned OFF to avoid confusion Figure 7 Options Control Board Assembly DS1 J201...

Page 14: ... a breaker will not reset or trips as being turned on backfeed prevention interlock is active and the proper conditions as described below will have to be present before the breaker can be operated BKR1 supplies power from the supply utility to the bypass input of the UPS For single input UPS configurations it also supplies power to the rectifier input BKR2 bypasses the path through BKR1 the UPS a...

Page 15: ...SKRU and rotate key to capture 8 Open BKR1 to completely isolate the UPS 5 4 To transfer from MBS to normal mode 1 Close BKR1 2 Place the UPS in Bypass Mode 3 Close BKR3 4 Open BKR2 5 Complete any UPS start up required 5 5 To transfer from MBS to normal mode with SKRU 1 Close BKR1 2 Place the UPS in Bypass Mode 3 While pressing the SKRU push button rotate and remove key 4 Insert key into k3 and re...

Page 16: ...aintenance open closed open Load Off open open open Test UPS closed open open Test Battery open open closed Not Allowed open closed closed 5 8 Potential Issues MBS will not allow BKR2 to close 1 Check to see that the UPS is on bypass SWMB is closed 2 The UPS controls must be powered BKR1 and SWBY should be closed 3 Verify that the backfeed prevention interlock signals were properly wired as part o...

Page 17: ...perature measurements on the circuit breaker terminations This will require access to the cabinet interior There are hazardous voltages present and any work must be performed using caution Only trained service personnel should perform this work Elevated temperatures of the terminations usually are the sign of a loose connection but can also signal that a breaker is failing Loose connections should...

Page 18: ...ze Torque Load 5 16 13 17 lbf ft 18 23 Nm 3 8 27 34 lbf ft 36 46 Nm 44 59 lbf ft 60 80 Nm Low Voltage Terminal Torque Wire Size Torque 26 10 AWG 5 3 7 0 inch pounds Table 5 Environmental Specifications Altitude De rate load capability above 1000 meters 1 per 100 meters Operating Temperature 40o C Maximum Humidity Maximum 95 RH Non condensing Table 6 Electrical Specifications 300kVA 400kVA 500kVA R...

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