1. Manuals
  2. Brands
  3. Cutler-Hammer Manuals
  4. Test Equipment
  5. HWT-500
  6. Instructions manual

Cutler-Hammer HWT-500 Instructions Manual

Network protector portable test set
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
I.B. 35-557
Instructions for
Cutler-Hammer Type HWT-500
Network Protector
Portable Test Set
READ AND UNDERSTAND THESE INSTRUCTIONS BEFORE ATTEMPTING
ANY MAINTENANCE OF THE NETWORK PROTECTOR
SEE IMPORTANT DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY ON
NEXT PAGE
Cutler-Hammer
2210 Highway 72/221 East
Greenwood SC 29649
Effective July, 2001
1 of 45

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the HWT-500 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Cutler-Hammer HWT-500

Summary of Contents for Cutler-Hammer HWT-500

  • Page 1 I.B. 35-557 Instructions for Cutler-Hammer Type HWT-500 Network Protector Portable Test Set READ AND UNDERSTAND THESE INSTRUCTIONS BEFORE ATTEMPTING ANY MAINTENANCE OF THE NETWORK PROTECTOR SEE IMPORTANT DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY ON NEXT PAGE Cutler-Hammer 2210 Highway 72/221 East...
  • Page 2 Please read instruction book I.B. 35-557 carefully before attempting to use the HWT-500. Any questions regarding the HWT-500 Test Set or its instruction booklet may be answered by calling the Cutler-Hammer Network Protector toll-free number: 1-800-525-6821.

  • Page 3: Table Of Contents

    SSNPR Trip Test………………………… SSNPR Phase Detection Test………… Individual Relay Test………………………… Mechanism Components Test………… CN-33 Master Relay Overvoltage Test…… HWT-500 Maintenance and Repair…… CN-33 Master Relay Reverse Current Trip Table 1 - Suggested Relay Settings…… Test……………………………………………… CN-33 Single Phase Reverse Current Trip Table 2 - Renewal Parts…………………...

  • Page 4: Introduction

    I.B. 35-557 INTRODUCTION The Cutler-Hammer type HWT-500 universal, portable network protector test set has been designed for use on network protector breakers of all amperage ratings, 60HZ, and in the voltage class of 480 and 216. It is designed for electrical and mechanical testing of any network protector breaker, or selected component parts, on voltages from 208Y/120 to 480Y/277 volts, three phase, four wire wye connected systems, or 480 volt, three phase, three wire delta systems.

  • Page 5: Safety Information

    I.B. 35-557 SAFETY INFORMATION WARNING 1. FAILURE TO FOLLOW INSTRUCTIONS CONTAINED HEREIN COULD RESULT IN SEVERE PERSONAL INJURY, DEATH, AND/OR PRODUCT OR PROPERTY DAMAGE. 2. ANY MECHANICAL OR ELECTRICAL MODIFICATION TO ANY NETWORK ROTECTOR REQUIRES THAT THE NETWORK PROTECTOR BE GIVEN APPROPRIATE ELECTRICAL TESTS, USING PROPERLY MAINTAINED TESTING DEVICES, BEFORE PLACING INTO SERVICE.

  • Page 6: Test Set Transportation

    I.B. 35-557 TEST SET TRANSPORTATION The HWT-500 test set is equipped with wheels and a retractable handle assembly to assist in the transportation of the device. To extend the handle, slide the red handle lock located underneath retracted handle and extend the handle assembly outward.

  • Page 7: General Operating Information

    LEADING TO THE POSSIBILITY OF DEATH, SEVERE PERSONAL INJURY AND/OR PROPERTY DAMAGE. 1. The Type HWT-500 test set is equipped with selector switches and controls to vary both the overvoltage phasing value as well as the reverse current magnitude at various preselected angles.

  • Page 8: Control Panel Layout

    I.B. 35-557 Power Sequence Ammeter Red Indicating Light Light Light Green Indicating Light KTKR-15 Fuse Holders Voltmete Variac Phasing Volt Switch Supply Single Phase Switch Function Supply Voltmeter I&PV Switch (Current & Switch Phasing) Phasing Switch 8 of 45...
  • Page 9 I.B. 35-557 DANGER IT IS VERY IMPORTANT TO RETURN THE VARIAC TO “0” AFTER THE COMPLETION OF EACH OPERATION. FAILURE TO FOLLOW THIS WARNING WILL RESULT IN DAMAGE TO VARIAC INSULATION. P1 and P2 Cable Assemblies 9 of 45...
  • Page 10 I.B. 35-557 DESCRIPTION OF CONTROLS P1 and P2 – Cable Input Sockets NOTE – They are polarized and have a different contact arrangement. Dust covers with lanyards are supplied. F1, F2, F3 – Test kit fuses, Type KTKR-15. POWER ON LIGHT – Is illuminated when the supply switch is moved from the “OFF” position to either the 480 or 216 position.
  • Page 11 I.B. 35-557 Output Cable Assemblies 30 Foot Cable Assembly for Socket P2 A-B-C…………………………………………………Supply leads with in-line KTKR-30 fuses * COMM-RED-GREEN…………………………………Red and Green indicating lamp leads COMM-CLOSE-TRIP……………………………………………………Mechanical Test leads N (GRD)…………………………………………………………Housing neutral or ground lead 30 Foot Cable Assembly for Socket P1 NA-NB-NC……………………………………………………………Network side breaker leads TA-TB-TC…………………………………………………………Transformer side breaker leads N (GRD)……………………………………………………………Breaker neutral or ground lead...

  • Page 12: Overall Operational Test

    PROCEDURE FOR OVERALL OPERATIONAL TEST Before commencing work, refer to Safety Information. Using Cutler-Hammer Type HWT-500 test Set on a 216Y/125 volt, 3 phase, 4-wire system with solid state relays. Refer to figure on page 14 for the required test lead connections.
  • Page 13 The mechanical tests are performed to ensure that the motor, tripping device and intermediate motor control device are operating at the minimum pick-up voltages. NOTE: Because of the ruggedness of the HWT-500 design and the components selected, it is possible to perform crossed phase, rolled phase and shorted phase tests using this device so long as the breaker main contacts are in the open position and motor closing has been blocked.

  • Page 14: Overall Close And Trip

    I.B. 35-557 OVERALL CLOSE AND TRIP TEST CONNECTION Before commencing work, refer to the Safety Information. Close Test – Switch positions Network protector open and set for automatic operation FUNCTION Switch – “RELAY” position I & PV Switch – PVA position Supp VM Switch –...
  • Page 15 I.B. 35-557 Trip Test – Switch positions Network protector closed and set for automatic operation FUNCTION Switch – “RELAY” position I & PV Switch – AI position Supp VM Switch – CA position PHASE switch – 180 position Single PH Test Switch – OFF position SUPPLY Switch –...

  • Page 16: Individual Relay Test

    I.B. 35-557 INDIVIDUAL RELAY TEST Westinghouse Electro-Mechanical Type CN-33, CNJ, BN. Before commencing work, refer to the Safety Information. These tests determine if the relays on a network protector breaker, CN-33 master relay, CNJ phasing relay and the BN de-sensitizing relay are functioning properly and their setting in regard to overvoltage close, reverse current trip, time delay and instantaneous trip, is correct.

  • Page 17: Cn-33 Master Relay Reverse Current Trip Test

    I.B. 35-557 CN-33 MASTER RELAY REVERSE CURRENT TRIP TEST Before commencing work, refer to the Safety Information. Switch Positions Network protector closed, breaker does not have to be in the automatic mode. FUNCTION Switch – “RELAY” position I & PV Switch – AI position Supp VM Switch –...
  • Page 18 I.B. 35-557 WARNING THE REVERSE CURRENT ADJUSTMENT SCREW MAY BE ENERGIZED. ADJUSTMENT SHOULD BE MADE WITH THE TEST SET SUPPLY SWITCH IN THE “OFF” POSITION. MAKE YOUR ADJUSTMENT THEN RE-ENERGIZE THE NETWORK PROTECTOR BREAKER THROUGH THE SUPPLY SWITCH ONCE ALL TOOLS HAVE BEEN REMOVED.

  • Page 19: Test

    I.B. 35-557 CN-33 SINGLE PHASE REVERSE CURRENT TESTS Before commencing work, refer to the Safety Information. Switch Positions Network protector closed, breaker does not have to be in the automatic mode. FUNCTION Switch – “RELAY” position I & PV Switch – AI, BI, CI position Supp VM Switch –...

  • Page 20: Cnj Phasing Relay Overvoltage Test

    I.B. 35-557 CNJ PHASING RELAY OVERVOLTAGE CLOSE TEST Before commencing work, refer to the Safety Information. Switch Positions Network protector closed, breaker does not have to be in the automatic mode. FUNCTION Switch – “RELAY” position I & PV Switch – PVA position Supp VM Switch –...

  • Page 21: Bn De-Sensitizing Relay Time Delay Test

    I.B. 35-557 BN DE-SENSITIZING RELAY TIME DELAY TEST Before commencing work, refer to the Safety Information. Switch Positions Network protector closed, breaker does not have to be in the automatic mode. FUNCTION Switch – “RELAY” position I & PV Switch – PVA position Supp VM Switch –...

  • Page 22: Bn De-Sensitizing Relay Instantaneous Trip Test

    I.B. 35-557 BN DE-SENSITIZING RELAY INSTANTANEOUS TRIP TEST Before commencing work, refer to the Safety Information. Switch Positions Network protector position is immaterial. FUNCTION Switch – “RELAY” position I & PV Switch – AI position Supp VM Switch – CA position PHASE switch –...

  • Page 23: Mechanism Component Test

    I.B. 35-557 MECHANISM COMPONENT TESTS Before commencing work, refer to the Safety Information. Switch Positions Network protector open and set for automatic operation with the relays removed. FUNCTION Switch – “MECH” position I & PV Switch – AI position Supp VM Switch – CA position PHASE switch –0 position Single PH Test Switch –...
  • Page 24 I.B. 35-557 The network protector breaker failing to close or trip during these minimum voltage series of tests can indicate a mechanism or trip device that needs immediate attention. Records should be made of the minimum voltage values so that a year-to-year comparison can be made. Slow deterioration of the motor or trip device can be observed over the years by making such comparisons.
  • Page 25 I.B. 35-557 THIS PAGE BLANK 25 of 45...

  • Page 26: Mpcr Solid State Relay Close Test

    I.B. 35-557 MPCR or MPCV SOLID RELAY TEST Before commencing work, refer to the Safety Information. Switch Positions Network protector open and set for automatic operation. FUNCTION Switch – “RELAY” position I & PV Switch – PVA for close, AI for trip Supp VM Switch –...

  • Page 27: Mpcr Solid State Relay Trip Test

    I.B. 35-557 Trip Test All of the switch positions remain the same as used in the “Close Test” with exception of the Phasing switch and the I&PV switch which must be changed to the 180 position and the AI position, respectively.

  • Page 28: Individual Relay Test

    I.B. 35-557 INDIVIDUAL RELAY TEST General Electric Electro-Mechanical Type Can, CHN or CAL, CHL These test determine if the relays on a network protector breaker, type CAN or CHN, master relay, CAL or CHL phasing relay, are functioning properly and their setting in regard to overvoltage close, reverse current trip, time delay and instantaneous trip, is correct.

  • Page 29: Can Or Chn Master Relay Overvoltage Close Test

    COMMON, AS WIRE #11; TRIP, AS WIRE #41 AND CLOSE, AS WIRE #6. REMOVE THESE THREE LEADS FROM THE RELAY TERMINAL STRIP. THE HWT-500 LEAD MARKED “COMM” IS PLACED ON THE RELAY TERMINAL WHERE WIRE #11 WAS ATTACHED; LEADS MARKED “GREEN” IS PLACED ON THE RELAY TERMINAL WHERE WIRE #41 WAS ATTACHED: LEADS MARKED “RED”...

  • Page 30: Can Or Chn Master Relay Reverse Current Trip Test

    I.B. 35-557 CAN OR CHN MASTER RELAY REVERE CURRENT TRIP TEST Before commencing work, refer to the Safety Information Switch Positions Network protector closed, breaker does not have to be in the automatic mode. FUNCTION Switch – “RELAY” position I & PV Switch – AI position Supp VM Switch –...

  • Page 31: Pyc16 Delayed-Sensitive Trip Test

    I.B. 35-557 TYPE PYC16 DELAYED-SENSITIVE TRIP TEST Before commencing work, refer to the Safety Information. If you have wires #11, #41 and #6 disconnected from the relay terminal block, reinstall them before proceeding. On network protectors equipped with the type PYC16 delayed-sensitive relay, the time delay relay is energized and the timing cycle initiated when the CAN or CHN relay trip contact makes.

  • Page 32: Cal Or Chl Phasing Relay Overvoltage Close Test

    COMMON, AS WIRE #6 AND CLOSE, AS WIRE #6A. REMOVE THESE LEADS FROM THE RELAY TERMINAL STRIP. THE HWT-500 LEAD MARKED “COMM” IS PLACED ON THE RELAY TERMINAL WHERE WIRE #6 WAS ATTACHED; LEAD MARKED “RED” IS PLACED ON THE RELAY TERMINAL WHERE WIRE #6A WAS ATTACHED.

  • Page 33: Ssnpr Close Test

    I.B. 35-557 GENERAL ELECTRIC TYPE SSNPR SOLID STATE RELAY Before commencing work, refer to the Safety Information CAUTION THE SSNPR RELAY SWITCHES AN AC VOLTAGE THROUGH ITS TRIP AND CLOSE CONTACTS; FOR THIS REASON, DO NOT CONNECT THE “COMM-RED-GREEN” INDICATOR LEADS.

  • Page 34: Ssnpr Trip Test

    I.B. 35-557 SSNPR Close Test By rotating the VARIAC you can increase the overvoltage phasing value to the desired value at which the SSNPR close contact makes and the breaker contacts close. The value at which the protector closes is the reclose setting of the SSNPR. If it is necessary to increase or decrease this value by less than (+/-) 20% for models 10 and 20SSNPR or (+/-) 40% for model 30 and 40 SSNPR, then the following steps are necessary: A.
  • Page 35 I.B. 35-557 Time Delay Module Test (Optional) Although the instantaneous overcurrent pickup point cannot be calibrated, the time delay function of the module can be tested. Install the time delay module on the SSNPR. Make certain that the network protector contacts are closed. All the switch positions remain the same as used in the “Close Test”...

  • Page 36: Mechanism Components Test

    I.B. 35-557 GENERAL ELECTRIC MECHANISM COMPONENT TESTS Before commencing work, refer to the Safety Information. Switch Positions Network protector open and set for automatic operation with the relays removed. FUNCTION Switch – “MECH” position I & PV Switch – AI Supp VM Switch –...
  • Page 37 I.B. 35-557 The network protector breaker failing to close or trip during these minimum voltage series of tests can indicate a mechanism or trip device that needs immediate attention. Records should be made of the minimum voltage values so that a year-to-year comparison can be made. Slow deterioration of the motor or trip device can be observed over the years by making such comparisons.

  • Page 38: Hwt-500 Maintenance And Repair

    E. Inspect the two cable assemblies for loose connections to the alligator clips or for frayed wires. The major active components of the HWT-500 test set are mounted to the front panel assembly or are located within the body of the test set case.
  • Page 39 TABLE 1 – SUGGESTED RELAY SETTINGS When using the HWT-500 test set to calibrate relays mounted on the network protector breaker, the settings listed below will satisfy the majority of dedicated feeder, distributed grid or spot network applications. In some...
  • Page 40 I.B. 35-557 SUGGESTED TRIP SETTINGS These values are based on a setting of 0.2% of the protector current transformer rating. The chart below lists the standard ratio of C.T. which would be supplied for any given network protector rating. Be alerted, however, that network protector current transformers, and their ratios, may have been changed at the time of manufacture, upon request, or may have been changed after installation.
  • Page 41 I.B. 35-557 TABLE 2 SUGGESTED RENEWAL PARTS Item description Style # Supply Switch NWD0101 Fig 2 Phasing Switch NWD0101 Fig 3 Supply Volt Switch NWD0101 Fig 1 IV Switch NAS0111H05 Test Switch NAS0111H08 Single PH Switch NWD0102G01 CT/PT NDT0286H01 Ammeter NDT0256H01 Voltmeter NDT0258H01...
  • Page 42 I.B. 35-557 42 of 45...
  • Page 43 I.B. 35-557 RELAY MODULE WIRING 216V Relay Module Wiring 1 of 45...
  • Page 44 I.B. 35-557 2 of 45...
  • Page 45 I.B. 35-557 RELAY MODULE W IRING 480Volt Relay Module Wiring 3 of 45...

Table of Contents